Active vs. Passive PoE Switch: How to Choose? (2024)

Table of Contents
Related Blogs Advantages of Analog Cameras IP Cameras vs. Analog Cameras: Which is ideal for your business? What is a PoE Switch? Types of PoE Switches Advantages of PoE Switches PoE Switch Applications How to Select the Right PoE Switch Features of PoE Switches to Consider Limitations of PoE Switches FAQs about PoE Switch Conclusion What Is Power over Ethernet (PoE)? Benefits of PoE Network—Why Use Power over Ethernet? Evolutionary Path of the Power over Ethernet (PoE) PoE Types PoE vs. PoE+ vs. PoE++ (UPoE )vs. PoH PoE Classes Passive PoE vs. Active PoE How to Add PoE to Your Network? Common FAQs on PoE Network What Is A PoE Switch? What is A PoE Injector? Build Wireless Networks: PoE Switch vs PoE Injector PoE Switches Are More Convenient and Easier to Install PoE Switches Are More Cost-Effective PoE Switches Offer Greater Flexibility and Scalability PoE Switches Are More Efficient for Building Wireless Networks PoE Switches Offer Better Management and Control Features How to Choose a PoE Switch for a Wireless Network? Conclusion PoE Error 1:PoE Switch Fails to Provide Power Step 1:Verify PoE IEEE Standards and Power Modes of PSE and PD Step 2: Check the PoE Cabling Step 3:Verify Sufficient PoE Power Step 4:Check PoE Power Management Configuration PoE Error 2:Intermittent Power Loss or Reloads of a PoE PD Step 1: Check Whether PoE Power Is Sufficient Step 2: Check the PoE Cabling PoE Error 3:Inconsistent Powering of PDs on the Same PSE Step 1: Check if PDs Are Available on Other Ports Step 2: Check the PoE Power PoE Error 4: PoE Cameras Not Powered Step 1:Verify Camera Compatibility with PoE Switch/Injector Step 2: Check if the Camera Is Fully Connected to the PoE Switch/PoE Injector Step 3: Check if the PoE Module of the Camera Gets Power Conclusion Step1.Connectgatewayto MQTTbroker. Step2.Send Downlink Command from Gateway Step3. Publish Topic on MQTT Explorer to send downlink data to device. Step1. Enable the gateway built-in network server. Step2. Add an Application Step3. Connect gateway to MQTT broker. Step4. Add LoRaWAN nodes to the gateway. Step5. Add uplink data topic. Step6. Subscribe topic from MQTT client to get uplinks. Q: What Is PoE PSE? Q: What Are the Differences Between PoE PD and PoE PSE? Q: What Are the Common PoE PSEs? Q: Do I Still Need A PoE Injector if I Have a PoE Switch? Q: Can I Use A PoE Switch with NVR? Q: Can I Use a Media Converter with PoE Switch? Q: Can I Use a PoE Splitter as a PoE Injector? Conclusion Why Use the PoE Switch for IP Camera Systems? How to Choose The Suitable PoE Switch for IP Camera Systems? Tips for Choosing the Right PoE Switch for Your IP Camera System: How to Connect IP Cameras to a PoE Switch? Summary What Is PoE and PoE Switch? What Is PoE+ and PoE+ Switch? What Is PoE++ and PoE++ Switch? PoE vs. PoE+ vs. PoE++ Switch: Which to Choose? Specifications of PoE vs. PoE+ vs. PoE++ Switch Applications of PoE vs. PoE+ vs. PoE++ Switch LinovisionPoE++ Switch Conclusion PoE Standards Introduction 1. IEEE 802.3af (Standard PoE) 2. IEEE 802.3at (PoE+) 3. IEEE 802.3bt Understanding PoE Wattage How Much PoE Wattages are Need? Linovision Managed Switches: Your PoE Solution Summary Devices in PoE Network Working Process of PoE Switch Power Supply PoE Switch Power Supply Mode PoE Switch Power Supply Distance PoE Switch Supply Voltages and Types Conclusion What Are Active PoE and Active PoE Switch? What Are Passive PoE and Passive PoE Switch? Active vs. Passive PoE Switch: What Are Their Differences? Active vs. Passive PoE Switch: PoE Power Supply Pinout Active vs. Passive PoE Switch: Ethernet Support Active vs. Passive PoE Switch: Cost Active vs. Passive PoE Switch: Which to Choose? 1.LinovisionController Configuration 2.LinovisionGatewayConfiguration 3. TCP Client/Modbus TCP Configuration 3.1 TCP Client Configuration 3.2 Modbus TCP Configuration 4. Test 4.1 Transmission between Controllers and RS485 Devices 4.2 Send Query from Gateway 4.3 Send Query from TCP Client 4.4 Read to Modbus TCP 4.5 Write from Modbus TCP ${ useArr[i].title }

Related Blogs


Active vs. Passive PoE Switch: How to Choose? (1)

2.Seamless Integration and Advanced Functionality:By leveraging digital networks, IP cameras have the ability to seamlessly integrate with existing IT infrastructure and services, including cloud storage and sophisticated surveillance software. They offer a wide range of analytical capabilities, such as object recognition, perimeter breach alerts, and other intelligent analytics that leverage video data more efficiently. On the other hand, analog cameras generally lack support for advanced analytics but fulfill basic surveillance functions, such as video recording and live monitoring.

Active vs. Passive PoE Switch: How to Choose? (2)

3. Scalability and Flexibility:Thanks to their network-based infrastructure, IP cameras offer effortless integration into existing systems. They support expansive and adaptable surveillance ecosystems that can expand and evolve over time without being constrained by physical connections.

4. PoE Support:IP cameras often have the capability to receive power through the same cable used for data transmission (Power over Ethernet), simplifying installation and reducing the complexity of wiring. This feature eliminates the need for additional power supply units and enables more straightforward and neater setups. In contrast, analog cameras typically require separate power connections.
5. Remote Access:One of the most desirable attributes of IP cameras is the ability to remotely view and manage surveillance footage. Users can access live and recorded videos via internet-connected devices from anywhere in the world, ensuring continuous monitoring and oversight.
6. Advanced Data Protection:IP cameras offer enhanced data protection through encryption and secure network transmission. This ensures that the crucial footage they capture is less susceptible to interception or unauthorized access, addressing a significant concern associated with the more vulnerable transmission methods of analog systems.

Active vs. Passive PoE Switch: How to Choose? (3)

Advantages of Analog Cameras

  1. Cost-Effectiveness:One of the primary advantages of analog cameras is their affordability. The initial investment for analog surveillance equipment is typically lower compared to IP-based systems, making them an attractive option for budget-conscious users or smaller-scale operations.

  2. Simplicity and Ease of Use:Analog systems are often considered less complex to install and operate. With a straightforward setup that doesn't require in-depth knowledge of IT infrastructures, analog cameras can be an excellent choice for those seeking a basic yet effective surveillance system. In contrast, IP cameras may have a steeper learning curve for users who are unfamiliar with network technology.

  3. Wide Compatibility:Analog cameras have been in use for decades, leading to a widespread standard of system compatibility. This advantage is particularly valuable when upgrading existing systems, as existing wiring can be reused for new analog cameras.

  4. Low Bandwidth Requirements:Unlike IP cameras, which transmit large amounts of data over a network, analog cameras do not consume significant bandwidth. This results in a lighter load on your network infrastructure and potentially reduced ongoing operational costs.

IP Cameras vs. Analog Cameras: Which is ideal for your business?

Deciding between IP cameras and analog cameras for your business depends on finding the right balance between quality, cost, and ease of use. IP cameras may be the preferred choice if you require high-resolution footage, scalability, and integration with cutting-edge technology. However, if budget constraints are a significant factor and your current infrastructure supports it, analog cameras offer reliability without the need for an extensive overhaul. Ultimately, aligning your selection with your operational needs and financial capacity will ensure a secure and efficient surveillance environment for your business.

`, published_at:``, sku:[] } allObj.sku.push("IPC608UW-10") allObj.sku.push("IPC608AC") allObj.sku.push("IPC608EX") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Unlocking the Secrets of PoE Switches — A Complete Guide`, url:`/en-us/blogs/blog/unlocking-the-secrets-of-poe-switches-a-complete-guide`, image:`//eu.linovision.com/cdn/shop/articles/poe_switch_overview_720x_1caa768b-e690-4280-89f5-ffce4ac9e57e.webp?v=1714976755`, content:`

Power over Ethernet (PoE) switches have gained significant popularity as a practical solution for businesses seeking to conveniently deliver power and data through a single connection. In this comprehensive guide, we will delve into the various types of PoE switches, highlight their advantages and applications, and provide insights on selecting the most suitable PoE switch to meet your specific requirements.

What is a PoE Switch?

A PoE switch combines the functionalities of a switch and a power source into a single device. Equipped with multiple Ethernet ports, these switches facilitate seamless connections with various devices such as VoIP phones, wireless access points, and IP cameras. By integrating power delivery capabilities, PoE switches eliminate the need for separate power cables, streamlining installations. These switches prove particularly beneficial in network deployments where power outlets are limited or in scenarios where devices are situated in challenging-to-access locations.

PoE switches leverage the power over Ethernet (PoE) technology, enabling the simultaneous transmission of data and electrical power through Ethernet cables. This innovative technology employs a combination of power sources and power injectors to deliver power to connected devices. Acting as intermediaries between the power source and the devices, power injectors handle the transmission of both data and power, ensuring efficient operation.Also Check-PoE switch

Active vs. Passive PoE Switch: How to Choose? (4)


Types of PoE Switches

When selecting a PoE switch, it is vital to familiarize yourself with the various types available. There exist two primary categories of PoE network switches:

The Unmanaged PoE Switch

Designed for simplicity and ease of use, the unmanaged PoE switch offers a plug-and-play solution that suits smaller setups. It requires minimal configuration and is user-friendly. However, it lacks extensive customization options, management features, and advanced security capabilities. Consequently, it is best suited for applications with uncomplicated network requirements, such as home networks or small-scale environments comprising fewer than 5-10 computers.

The Managed PoE Switch

Engineered to deliver enhanced control and comprehensive network management, managed PoE switches excel in scenarios that demand advanced functionality. With their robust security features and extensive configuration options, they prove ideal for applications like enterprise networks, data centers, and large-scale surveillance systems. These switches offer features such as VLANs (Virtual Local Area Networks), QoS (Quality of Service), port mirroring, and heightened port security, catering to complex networking requirements.

Advantages of PoE Switches

Given how PoE switches work, the benefits of PoE switches are obvious.

Simplified Installation: PoE network switches are known for their user-friendly installation and configuration. With plug-and-play functionality, these switches eliminate the need for complex wiring or intricate setup procedures. Built-in features like port mirroring, VLANs, and QoS further simplify network management tasks, enhancing overall operational convenience.

Cost Efficiency:PoE switches exhibit remarkable energy efficiency. By intelligently delivering the precise power required for each connected device, they eliminate the need for oversized power supplies. This efficient power allocation not only reduces energy consumption but also contributes to long-term cost savings, making PoE switches a financially advantageous choice.

Enhanced Flexibility:The ability to power devices through PoE enables easy relocation to areas without available power outlets. This flexibility allows PoE switches to be conveniently placed in challenging-to-reach locations or areas distant from power sources. Security cameras, for instance, can be strategically installed in optimal positions, regardless of the availability of nearby power outlets.

Future-Proofing:With the rapid growth of the Internet of Things (IoT) industry, PoE switches provide future-ready infrastructure. By incorporating PoE switches into your network, you can seamlessly accommodate the increasing number of devices designed to leverage this technology. This scalability ensures long-term compatibility and positions your network for seamless integration with emerging IoT devices.

PoE Switch Applications

This rapid expansion of network-connected devices means that PoE technology and PoE switches will grow in importance to most networking infrastructures. While PoE switches have numerous applications, we mainly discuss the three most common application scenarios.

  • VoIP Phones: VoIP phones are PoE devices, with PoE allowing for a single connection to the wall socket and the ability for remote powering down

  • IP Cameras: Security cameras can be connected to PoE switches to enable fast deployment and simple repositioning.

  • Wireless: Many wireless access points are PoE compatible. Thus, PoE switches allow for easy relocation and remote positioning.

  • Smart Home Automation: LED lighting, heating and cooling systems, appliances, voice assistants, and electric car charging stations.

How to Select the Right PoE Switch

When selecting a PoE switch, it is important to consider your application requirements, the features and limitations of the PoE network switch. Of course, the power requirements of connected devices are also important. Some PoE network switches are designed to power devices that require up to 30 watts, and some are even designed for power devices that require up to 60 watts.

Features of PoE Switches to Consider

In addition to the type of switch and power requirements, there are a number of features to consider when selecting a PoE switch. These features include port speed, port count, port types, PoE budget, power savings, and port security.

  • Port speed: Maximum speed a port can achieve. It is important to choose a switch with a port speed that can support the connected devices. The port count is the number of ports available on the switch. It is important to choose a switch with enough ports to accommodate all of the connected devices.

  • Port type: Common port types include RJ45, SFP, and SFP+. It is important to choose a switch with the right port type for connected devices.

  • PoE budget: Maximum amount of power that can be allocated to connected devices. It is important to choose a switch with a PoE budget that can accommodate all of the connected devices.

  • Power savings: Designed to conserve energy by automatically turning off unused ports. This can help to reduce energy costs.

  • Port security: Designed to protect connected devices from unauthorized access.

Limitations of PoE Switches

Nonetheless, there are some limitations to PoE variation that you should be aware of:

  • Restrictions on distance:Typically, PoE switches can transmit over Ethernet up to a distance of up to 100 meters. The 100-meter distance restriction presents a challenge for large campuses, restaurants, and businesses implementing PoE. However, there are still devices like power extenders and powered fiber cables that can be used to extend the PoE range.

  • Power:If you require high power over poe networks, you must ensure that the power capacity of your PoE switches meets your requirements due to the power limitation imposed by PoE standards and Wattage.

FAQs about PoE Switch

Q:Non-PoE vs. PoE Switch: How do they differ?

A:Non-PoE switches cannot deliver power to connected devices, necessitating the use of midspan power sourcing equipment (PSE), such as a PoE injector. This setup adds power while transmitting data to powered devices (PDs). In contrast, PoE switches offer a simpler solution, directly delivering power and data to PDs with just a network cable and a power cable.

Active vs. Passive PoE Switch: How to Choose? (5)

Also Check-PoE vs PoE+ vs PoE++ Switch: How to Choose?

Q: Do PoE Switches Require Special Cables?

A: No. The Ethernet cables that should be used for PoE network switches primarily depend on the data rate of the PoE port; for instance, Cat3 or better cables can be used for 10/100M; Cat5/Cat5e/Cat6 cables are required for 1000M. In the future, Cat6a or higher cables may be required for the installation of 2.5G/5G/10G PoE devices.

Q: Active vs Passive PoE Switch: Should I Choose Active or Passive PoE Switches?

A: Active PoE network switch complies with standard PoE. On the contrary, passive PoE network switch does not adhere to any IEEE standard. There are many ways that active and passive PoE switches differ from one another, like how the PoE power supply pinout looks and whether or not they support Ethernet.

Also Check-Active vs. Passive PoE Switch: Which Should We Choose?

Q: Can the PoE Switch be used with a computer or other non-PoE devices? And will a PoE switch harm devices that do not use PoE?

A:Yes, a PoE switch can be used with non-PoE devices like computers. The switch automatically detects whether a connected device is PoE-compatible and will only supply power to PoE-enabled devices. So, it won't harm non-PoE devices; they just won't receive power through the switch.

Q: Is it possible to connect two PoE switches?

A: You could, yes. The PSE only supplies PD with power when it determines that the device can handle it. As PSEs, the two PoE switches will only be used for data communications.

Q: What is the maximum transmission distance of PoE? How to extend the transmission distance of PoE?

A: Whether using IEEE 802.3af (PoE) or 802.3at (PoE+), data and power transmission are limited to a distance of 100 meters over Ethernet cables in standard PoE. Media converters and PoE extenders, for example, can extend the range to up to 300 meters if you want to increase the maximum distance.

Conclusion

PoE switches are an effective solution for businesses looking to provide power and data over a single connection. They can simplify installation, reduce clutter, and improve energy efficiency. When selecting a PoE network switch, it is important to consider your application requirements, the power requirements of the connected devices, and the features of the switch. It is also important to consider the cost and long-term cost savings of using a PoE network switch.

If you are looking for a reliable and cost-effective PoE switch, check outLinovisionPoE Switches.

`, published_at:``, sku:[] } allObj.sku.push("POE-SW508G") allObj.sku.push("POE-SW708GM") allObj.sku.push("POE-Switch0504GD") allObj.sku.push("POE-SW708GM-DC12V") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`What Is Power over Ethernet and How to Add PoE to Your Network?`, url:`/en-us/blogs/blog/what-is-power-over-ethernet-and-how-to-add-poe-to-your-network`, image:`//eu.linovision.com/cdn/shop/articles/Why_Choose_PoE_Switch_to_Build_Wireless_Networks.webp?v=1714374883`, content:`

With the wide application of VoIP phones, IP cameras, and wireless access points,Power over Ethernet (PoE)has made great strides in recent years. And PoE network is expected to expand rapidly in the future due to the increasing number of IoT applications and smart device deployments and newly ratified standards designed to support more smart devices. In this article, we will provide an introduction covering various aspects of PoE such as PoE wiki, PoE standards, PoE types, PoE classes, and PoE applications.

What Is Power over Ethernet (PoE)?

PoE is a networking technology that can transmit both data and power over one single standardEthernet cable. It allows us to use network cables such asCat5/Cat5e/Cat6/Cat6a cablesto provide data connections and electric power to wireless access points, IP cameras, VoIP phones, PoE lighting and other powered devices (PDs). With the use of PoE technology, we can easily deliver power to indoor or outdoor PDs without the need to install additional electrical infrastructure or to deploy power outlets at every endpoint.

Benefits of PoE Network—Why Use Power over Ethernet?

Active vs. Passive PoE Switch: How to Choose? (6)

Besides the above-mentioned benefits, there are several more appealing reasons for adopting PoE in networking.

Time & Cost Saving:By using PoE in the network, we do not need to deploy electrical wiring and outlets for terminal PDs. This will help to save much power cabling cost especially when there are lots of PDs in the network. Furthermore, there is no need to hire a qualified electrician for the PoE network, so you may also save both time and money on electrical installations.

Flexibility:Since Ethernet network cables are easier to deploy than electrical ones, PoE networking allows us to install PDs nearly anywhere rather than near the electrical outlets. This offers a ton of flexibility for setting up and repositioning terminal devices.

Reliability:PoE power comes from a central and universally compatible source rather than a collection of distributed wall adapters. It can be backed up by an uninterruptible power supply (UPS) or controlled to easily disable or reset devices. By doing so, the PDs will run as usual even though Power Sourcing Equipment (PSE) breaks down.

Evolutionary Path of the Power over Ethernet (PoE)

Institute of Electrical and Electronics Engineers (IEEE), Cisco, and the HDBaseT Alliance have released several standards to define PoE. These standards include IEEE 802.3af, IEEE 802.3at, IEEE 802.3bt, Cisco UPOE, and Power over HDBaseT (PoH).

Active vs. Passive PoE Switch: How to Choose? (7)

PoE Types

Due to different classification standards, PoE can be divided into different types. Currently, there are 4 PoE types based on IEEE PoE Standard: Type 1(IEEE 802.3af), Type 2(IEEE 802.3at), Type 3(IEEE 802.3bt), and Type 4(IEEE 802.3bt), as shown in the following chart.

Active vs. Passive PoE Switch: How to Choose? (8)

PoE vs. PoE+ vs. PoE++ (UPoE )vs. PoH

PoE (IEEE 802.3af), also known as PoE type 1, provides up to 15.4 watts of power per port and is used for devices like IP phones and cameras. PoE+ (IEEE 802.3at), PoE type 2, offers up to 30 watts and powers devices like PTZ cameras. PoE++ or UPoE (IEEE 802.3bt), also referred to as PoE type 3, delivers up to 60 watts and 100 watts, PoE type 4, per port for high-performance devices. Power over HDBaseT (PoH) enables power and data transmission for AV equipment over a single cable. The figure below illustrates the common applications of different PoE types for your reference.

Active vs. Passive PoE Switch: How to Choose? (9)

PoE Classes

Power over Ethernet (PoE) classes define standardized power levels for different network devices. These classes ensure compatibility between Power Sourcing Equipment (PSE) and Powered Devices (PD).

The classes, ranging from Class 1 to Class 8 as the above chart shows, correspond tospecific IEEE standards, indicatingthe maximum power output of the PSEandthe maximum power input of the PD. Let’s delve into more details about each class:

Active vs. Passive PoE Switch: How to Choose? (10)

Class 1is suitable for low-power devices such as IP phones, voice-over-IP (VoIP) devices, and basic sensors.

Class 2is intended for devices that require slightly higher power, including wireless access points, small IP cameras, and IP intercom systems.

Class 3is commonly used for devices that require moderate power, such as larger IP cameras, point-of-sale systems, and access control devices.

Class 4provides increased power delivery capabilities and is suitable for power-hungry devices like pan-tilt-zoom (PTZ) cameras, video phones, and thin clients.

Class 5introduces the support for four pairs of Ethernet wires, enabling higher power transmission. It is designed for devices with more demanding power requirements, including advanced PTZ cameras, multi-channel wireless access points, and small LED lighting systems.

Class 6provides increased power delivery capabilities beyond the previous classes. It can support devices like high-power pan-tilt-zoom cameras, multi-radio wireless access points, and small LCD displays.

Class 7offers even higher power capabilities introduced with the IEEE 802.3bt standard. It is suitable for devices like high-performance access points, large displays, and thin clients requiring substantial power.

Class 8represents the highest power class defined by current PoE standards. It is designed for power-hungry devices such as video conferencing systems, advanced lighting systems, and digital signage

It’s important to note that the power levels specified for each class represent the maximum allowable values, and the actual power delivered or consumed by the PD may vary based on its specific power requirements and negotiation with the PSE. Besides, understanding PoE classes allows network administrators to ensure that the power requirements of their devices align with the capabilities of their PoE infrastructure, ensuring proper operation and avoiding potential power supply issues.

Passive PoE vs. Active PoE

Power over Ethernet can also be divided intopassive PoE and active PoEin general. Active PoE is the standard PoE which refers to any type of PoE that negotiates the proper voltage between the PSE and the PD device. Passive PoE is a non-standard PoE technology. It can also deliver power over the Ethernet line but without the negotiation process.

How to Add PoE to Your Network?

The PoE supplied in the network generally comes from three different sources:PoE switch,PoE injector, andPoE splitter. The PoE switch is the easiest way to power up the PDs. You only need to run Ethernet cables from a PoEnetwork switchport to the terminal PoE device. A PoE injector is used when there is no PoE switch in the network. It has an external power supply and is responsible to add power to data that is coming from a network switch that is not PoE-capable. PoE splitters also supply power, but they do so by splitting the power from the data and feeding it to a separate input that a non-PoE-compliant device can use. It is commonly used for deploying remote non-PoE devices with no nearby AC outlets in the network.Active vs. Passive PoE Switch: How to Choose? (11)

Common FAQs on PoE Network

Q: What is the voltage of Power over Ethernet?

A:Power over Ethernet is injected onto the Ethernet cable at a voltage between 44v and 57v DC, and typically 48v is used. This relatively high voltage allows efficient power transfer along the cable, while still being low enough to be regarded as safe.

Q: What data speed does PoE offer?

A:Generally, PoE can deliver data rates at 10/100/1000Mbps over Cat5, Cat5e and Cat6 cables. Now thanks to the widespread IEEE 802.3bt PoE standard and PoE++ technology, PoE is able to deliver speeds of 2.5 Gbps to 5 Gbps over 100m and reaches 10 Gbps in recent times.

Q: Are there any limitations of PoE network?

A:Yes, PoE network does have some pesky limitations. First, it has a restricted reach of 328 feet (100 meters) which limits the viable locations where users can operate a remote IP-enabled device. Second, a single PSE such as a PoE switch usually connects to multiple PDs. If the PSE broke down, all the PDs will stop working. Therefore, it is important to buy qualified switches from a reliable supplier. In addition, you may also consider connecting the PSE to an uninterruptible power supply system.

Q: What are PoE midspan and PoE endspan?

A:The PoE midspan is usually a PoE injector that serves as an intermediary device between a non-PoE switch and the terminal PoE-capable powered device. A PoE endspan, which is commonly called the PoE network switch, directly connects and supplies both PoE power and data to a PD. PoE endspan provides power over the data pairs, also known as PoE Mode A. PoE midspan provides power using the pins 4-5 and 7-8, also known as PoE Mode B.

`, published_at:``, sku:[] } allObj.sku.push("POE-Switch0504GD") allObj.sku.push("POE-SW708GM") allObj.sku.push("POE-SW508G") allObj.sku.push("POE-Splitter1224") allObj.sku.push("POE-SWR608G") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`PoE Switch vs PoE Injector: Why Choose PoE Switch to Build Wireless Networks?`, url:`/en-us/blogs/blog/poe-switch-vs-poe-injector-why-choose-poe-switch-to-build-wireless-networks`, image:`//eu.linovision.com/cdn/shop/articles/PoE_Switch_vs_PoE_Injector.webp?v=1714274560`, content:`

Power over Ethernet (PoE) technology has transformed the way we construct wireless networks by enabling the simultaneous transmission of data and power over a single Ethernet cable. This innovative approach eliminates the need for additional modifications to the existing Ethernet infrastructure, allowing power devices (PDs) like IP cameras and wireless access points to receive power seamlessly. To gain a comprehensive understanding of PoE networks, you can consult resources such as theDemystifying PoE Network: Features, Standards, Types, and Common FAQs guide. When implementing PoE technology, you have two primary options: PoE switches and PoE injectors. In this article, we will delve into the distinctions between these two alternatives and elucidate why a PoE switch is often the superior choice for constructing wireless networks.

What Is A PoE Switch?

APoE switchis an Ethernet switch equipped with integrated PoE capabilities, enabling it to deliver power directly to connected devices through the Ethernet cable. This eliminates the need for additional equipment, as you can directly connect PoE-enabled devices like IP cameras and wireless access points to the PoE switch using Ethernet cables. The switch seamlessly provides power to the devices, simplifying the setup process and reducing the complexity of the network infrastructure.

Active vs. Passive PoE Switch: How to Choose? (12)

What is A PoE Injector?

A PoE injectoris a device designed to enable PoE functionality in non-PoE network switches or routers. It acts as an intermediary between the non-PoE switch and the PoE-enabled device. By connecting the injector between these two components, it injects power into the Ethernet cable, delivering power to the device. However, it's important to note that utilizing a PoE injector adds an extra step to the installation process. You need to connect the injector to both the PoE-enabled device and the non-PoE switch, ensuring that power is properly supplied to the device.

Active vs. Passive PoE Switch: How to Choose? (13)

Build Wireless Networks: PoE Switch vs PoE Injector

While both PoE switches and PoE injectors have the capability to deliver power over Ethernet cables, there are compelling reasons why a PoE switch is frequently considered the superior option when it comes to constructing wireless networks.

PoE Switches Are More Convenient and Easier to Install

PoE switches offer greater convenience and simplicity compared to PoE injectors when it comes to installation. Unlike PoE injectors, PoE switches eliminate the need for additional equipment, streamlining the installation process and reducing cable clutter. With a PoE switch, powering your devices becomes effortless since the switch itself provides power, eliminating the need for a separate injector. On the other hand, utilizing a PoE injector necessitates an additional installation step, potentially consuming more time and requiring extra equipment.

PoE Switches Are More Cost-Effective

When taking a long-term perspective into account, PoE switches provide superior cost-effectiveness. Although the initial investment in a PoE switch may be higher compared to a PoE injector, the overall cost savings over time are significant. By eliminating the need for additional injectors, you avoid the expense of purchasing and maintaining multiple devices. Moreover, the streamlined installation process and centralized power management offered by PoE switches result in time and effort savings, further contributing to cost efficiency.

PoE Switches Offer Greater Flexibility and Scalability

PoE switches provide enhanced flexibility and scalability compared to PoE injectors. With a PoE switch, you have the capability to connect multiple PoE-enabled devices to a single switch, offering the flexibility to expand your network as required. This allows for efficient network management and reduces the need for additional infrastructure. In contrast, a PoE injector can only provide power to a single device, limiting the scalability of your network and potentially requiring the installation of multiple injectors for additional devices. The ability of PoE switches to accommodate multiple devices makes them a more versatile solution for network expansion.

PoE Switches Are More Efficient for Building Wireless Networks

Deploying a wireless network using PoE switches is a more efficient approach compared to PoE injectors. When constructing an enterprise PoE wireless network, the Power over Ethernet switch serves as a connection point between the router and the Internet. This network configuration establishes seamless network connectivity between PoE wireless network devices and computers that are wired to the switch. The PoE wireless access points are directly connected to the PoE switch, receiving both power and network connectivity. These access points facilitate the connection of multiple wireless devices to the network, effectively extending its coverage and capabilities.

Active vs. Passive PoE Switch: How to Choose? (14)

The picture below shows a wireless network in an office. The wireless AP is installed on the ceiling. Cat5e or Cat6 network cable delivers data and power from the nearest PoE switch. Compared with the PoE injector, using a PoE Ethernet switch to power the AP is more efficient for the wireless network because you don't need to worry about the power outlets. In addition, you don't have to specifically buy a Cat5e or Cat6 Ethernet cable for power transmission.

Active vs. Passive PoE Switch: How to Choose? (15)

PoE Switches Offer Better Management and Control Features

PoE switches provide superior management and control capabilities compared to PoE injectors. They come in a wide range of options, catering to various applications, from simple unmanaged edge switches with a few ports to advanced rack-mounted units with extensive management features. With a PoE switch, you gain the ability to easily monitor and control the power usage of connected devices. This allows you to optimize the performance of your network and reduce energy costs by efficiently managing power allocation.

In contrast, PoE injectors lack these management and control features. They simply deliver power to PoE devices without offering the same level of monitoring and control functionality. Furthermore, PoE switches adhering to the IEEE 802.3af standard provide Gigabit speeds, ensuring both power and data transmission over a single cable. This eliminates the need for additional wiring, power sources, or adapters, streamlining the network setup process.

Active vs. Passive PoE Switch: How to Choose? (16)

How to Choose a PoE Switch for a Wireless Network?

When planning to choose a PoE switch, we recommend that you should take the following three aspects into consideration.

  • The number of ports of PoE switch, which can affect the number of powered devices that can be connected to a PoE switch.

  • The power budget and PoE Standard of a PoE switch are two important points that cannot be ignored, both have an impact on PoE switch's power consumption.

  • In terms of managed or unmanaged PoE switch, one thing is that when connecting with PoE devices like IP cameras, smart managed PoE switches can detect whether they are PoE-compatible and supply power automatically for the remote-powered devices.

For more detailed information about how to choose a PoE switch, you can click:PoE vs PoE+ vs PoE++ Switch: How to Choose?

Conclusion

In conclusion, while both PoE switches and PoE injectors can provide power over Ethernet cables, a PoE switch is often the better choice for building wireless networks. PoE switches are more convenient, easier to install, efficient, offer greater flexibility and scalability, and provide better management and control features than PoE injectors. By choosing a PoE switch, you can build a more efficient and effective wireless network that meets your needs and helps you achieve your goals. PoE switch is available in Linovision, where you can find a wide selection of PoE switches. For detailed information and product availability, please visit our website atwww.linovision.comorcontact us.

`, published_at:``, sku:[] } allObj.sku.push("POE-SW508G") allObj.sku.push("POE-SW708GM") allObj.sku.push("POE-Switch0504GD") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Troubleshooting Common PoE Errors and Solutions`, url:`/en-us/blogs/blog/troubleshooting-common-poe-errors-and-solutions`, image:`//eu.linovision.com/cdn/shop/articles/Trouble_shooting_Common_PoE_Errors_and_Solutions_720x_bc6f7831-3672-4a32-9b91-e8f6992cfd99.webp?v=1713950350`, content:`

Introduction:


In a PoE power supply system, the essential components are the Power Sourcing Equipment (PSE), the Powered Device (PD), and the PoE cables. When issues arise with PoE, it often manifests as the PoE switch failing to provide power, resulting in the powered devices ceasing to function. These failures can stem from various factors, including hardware and software-related issues. This article aims to help you accurately identify the root causes of PoE errors and minimize troubleshooting time. We will discuss three common PoE faults and provide troubleshooting methods for Power over Ethernet.

Active vs. Passive PoE Switch: How to Choose? (17)

PoE Error 1:PoE Switch Fails to Provide Power

One of the most frequently encountered PoE errors is when a PoE-powered device (PD) fails to boot up due to issues with PoE components or incorrect configuration commands. Follow the steps below to address this problem:

Step 1:Verify PoE IEEE Standards and Power Modes of PSE and PD

Ensure that both the Power Sourcing Equipment (PSE) and PD comply with PoE IEEE standards. It's important to note that non-standard PoE switches, also known as passive PoE switches, deliver power over Ethernet lines at a fixed voltage, regardless of whether the terminal device supports PoE or not. Improperly prepared passive PoE switches may damage the terminal devices. Additionally, the power modes of PSE and PD can contribute to PoE faults. There are three PoE modes: Alternative A, Alternative B, and 4-pair delivery. If a PD supports only PoE mode B power delivery while the PoE switch is based on Alternative A, they will not work together. Confirm the power supply modes of PSE and PD with the vendor.

Step 2: Check the PoE Cabling

Mismatched Ethernet cables and PoE ports can result in network failures. Furthermore, PoE failures can occur if the cable has hardware faults or fails to meet necessary standards. Therefore, it's highly recommended to ensure that the Ethernet cable supports PoE and is functioning properly before connecting the powered device.

Step 3:Verify Sufficient PoE Power

In theory, the PSE device interface can automatically detect the connected PD. If the power supply is insufficient, the PD will not receive power. Make sure that the power required to run the PDs does not exceed the power budget of the PoE network switch. If a PSE detects that the PD's power class falls within its capacity, it will power on the PD.

Step 4:Check PoE Power Management Configuration

Verify whether the switch interface has automatic PoE power management configuration enabled. If not, you will need to manually deliver PoE power to the connected PDs through the PoE network switch interfaces.

PoE Error 2:Intermittent Power Loss or Reloads of a PoE PD

What if a functioning PD experiences intermittent power loss or reloads? These situations may arise due to insufficient power supply and poor-quality PoE cables.

Step 1: Check Whether PoE Power Is Sufficient

A PD can power off or reload intermittently if the PSE's output power is insufficient to support all PDs operating at full power consumption. This can cause the PoE switch to fail to provide power. Take IP cameras as an example. During testing of extended functions such as Pan-Tilt-Zoom, heaters, or wipers, the PD may consume significantly more power than during normal operation. If no additional power is available, the camera may get stuck in a continuous boot cycle. To troubleshoot this PoE fault, measure the power requirements of the IP camera during startup and use an appropriate PSE to provide sufficient power.

Step 2: Check the PoE Cabling

If the Ethernet cable used in a PoE link is over 100 meters or has power loss due to the material and resistance of the cable itself, the PD would not get sufficient power, causing issues like network failure or latency. If the cables are not qualified, it will lead to PoE faults as well.

PoE Error 3:Inconsistent Powering of PDs on the Same PSE

If some PDs are receiving power while others connected to the same PSE are not, follow the tips below:

Step 1: Check if PDs Are Available on Other Ports

Determine whether the issue lies with specific ports on the PSE. Disconnect the PoE cable between the Ethernet switch port and the non-powered PDs. If the PDs receive power when connected to other PoE ports, it indicates a problem with specific ports. Verify if the port is shut down or error-disabled using configuration commands. If so, enable PoE functions through the appropriate command.

Step 2: Check the PoE Power

If newly added PDs to PSE ports are not powering on, it may indicate that the PoE switch's power budget is depleted. Ensure that the remaining PoE power in the PSE is equal to or greater than the maximum output required by the connected PDs. Additionally, limit the per-port current to safe levels and consider using additional PSE devices if necessary.

PoE Error 4: PoE Cameras Not Powered

If your camera cannot be powered on while using a PoE Switch or PoE injector, you may follow the tips below to solve your problems.

Step 1:Verify Camera Compatibility with PoE Switch/Injector

Check the compatibility requirements of your camera with the PoE switch or PoE injector. Ensure that the specifications of the PoE switch or injector align with the camera's requirements.

Step 2: Check if the Camera Is Fully Connected to the PoE Switch/PoE Injector

Inspect the PoE port lights on thePoE switch or PoE injector to confirm if the camera is fully connected. If the lights are not illuminated, try plugging the camera into other ports and using a different Ethernet cable. Also, check if the PoE port of the switch is damaged or rusty. You can test this by connecting the camera to other functioning PoE ports.

Step 3: Check if the PoE Module of the Camera Gets Power

If the camera's PoE module is not receiving power, use a DC adapter with the correct output voltage to power the camera. Make sure the DC/AC adapter is available and compatible. Typically, the adapter has an indicator light that indicates the presence of power. Some IP cameras support both DC and AC power supply ports, such as DC12V/2A and AC 24V/3A. Verify that the adapter's specifications match those of the camera.

Conclusion

The four errors mentioned above basically cover the problems that PoE switches are often prone to. If you meet other problems in the process of using PoE switches, you cancontact Linovision IT expertsfor answers. Linovision not only provides you with cost-effective and excellent qualityPoE switchesbut also provides a series of technical support services to ensure your after-sales worry-free.

`, published_at:``, sku:[] } allObj.sku.push("POE-Switch0504GD") allObj.sku.push("POE-SW508G") allObj.sku.push("POE-Splitter1224") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`How to Connect Linovision LoRaWAN Gateway to HTTP(s) Server?`, url:`/en-us/blogs/blog/how-to-connect-linovision-lorawan-gateway-to-https-server`, image:`//eu.linovision.com/cdn/shop/articles/How_to_Connect_Gateway_to_HTTPs_Server.webp?v=1713769601`, content:`

LinovisionLoRaWAN gateways support sending data packets to third party MQTT/HTTP/HTTPS server. We can create a new application on gateway, which can define the method of decoding the data sent from LoRaWAN end-device and choosing HTTP(S) data transport protocol to send data to HTTP(s) server.

Active vs. Passive PoE Switch: How to Choose? (18)

  • Linovison LoRaWAN Gateway: IOT-G6x, IOT-G8x
  • HTTP/HTTPS Server

Step1. Enable the gateway built-in network server.

Go toPacket Forwarder>Generalto enable the localhost server address.

Active vs. Passive PoE Switch: How to Choose? (19)

Enable the Network server onNetwork Server > Generalpage.

Active vs. Passive PoE Switch: How to Choose? (20)

Step2. Add an Application and Profiles.

Go toNetwork Server > Applicationsto add a new application, then click save.

Name:user-defined, arbitrary value

Description:user-defined, arbitrary value

Payload Codec:None or custom your decoder

Active vs. Passive PoE Switch: How to Choose? (21)

Go to Network Server>Profiles to add a new profile, then click save.

Name:user-defined, arbitrary value

Max TXPower:default value

Other parameters can be checked from LoRaWAN nodes user guides or you can keep all settings by default.

Active vs. Passive PoE Switch: How to Choose? (22)

Step3. Add LoRaWAN nodes to the gateway.

Go toNetwork Server > Device, add a new device, clicksave&apply.

Device Name:user-defined, arbitrary value

Description:user-defined, arbitrary value

Device-Profile:choose one of corresponding profiles added before.

Application:choose one of corresponding applications added before.

Other values can be confirmed with the LoRaWAN node manufacturers.

Active vs. Passive PoE Switch: How to Choose? (23)

When the status of it is “activated”, that’s mean above steps are done correctly.

Active vs. Passive PoE Switch: How to Choose? (24)

Step4. Forward data to HTTP(s) server.

Go toNetwork Server > Applicationsto add a “data transmission” for the application.

Active vs. Passive PoE Switch: How to Choose? (25)

Active vs. Passive PoE Switch: How to Choose? (26)

Fill in the HTTP(s) URL information for each data type, clicksave.

Uplink data:the URL address to receive all uplink data.

Join notification:the URL address to receive join notification.

ACK notification:the URL address to receive all ACK notification.

Error notification:the URL address to receive all error notification.

Active vs. Passive PoE Switch: How to Choose? (27)

Note:If there is user credentials when we access to HTTP(s) server, please add HTTP header, and fill in correct account and password.

Active vs. Passive PoE Switch: How to Choose? (28)

If we get data packet on the corresponding URL of HTTP server like below, that’s mean we have connected with HTTP server successfully.

Active vs. Passive PoE Switch: How to Choose? (29)

Note:The difference of forwarding data to HTTPS server is that you need upload related gateway certification on your HTTPS server (ContactLinovisionto get certification).

`, published_at:``, sku:[] } allObj.sku.push("IOT-G65") allObj.sku.push("IOT-G67") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`How to Remotely Control Devices via MQTT on Linovision Gateway`, url:`/en-us/blogs/blog/how-to-remotely-control-devices-via-mqtt-on-linovision-gateway`, image:`//eu.linovision.com/cdn/shop/articles/Remotely_Control_Devices.webp?v=1713334314`, content:`

When working as embedded network server,LinovisionLoRaWAN gateways supportbothsending data packets to third party MQTT/HTTP/HTTPS serveror receiving the downlink commands to transfer to LoRaWAN end devices.

  • LinovisionLoRaWAN Gateway: IOT-G56,IOT-G63 V1,IOT-G65,IOT-G67,IOT-G8x (Firmware version 80.0.0.64 or later)
  • MQTT Server/Broker
  • MQTT Client tool: take MQTT Explorer as example

Step1.Connectgatewayto MQTTbroker.

Refer articleHow to Connect LoRaWAN Gateway to MQTT Broker?to connect gateway to MQTT broker and ensure the broker and MQTT client can receive uplinks from devices.

Step2.Send Downlink Command from Gateway

Set the gateway to send downlink commands to device directly to check if the device can receive the downlink commands and take actions.

Device EUI:the device EUI to send downlink commands

Type:downlink command type. For Linovisiondevices, please selecthextype.

Payload:downlink command content (get from device manufacturer). ForLinovisiondevices, please refer to downlink command contents on corresponding user guides

Port:application port of device. It is 85 by default forLinovisiondevices.

Confirmed:after enabled, the device will send confirmed packet back to gateway if it receives the command. If not receive, the gateway will resend the downlink command 3 times at most.

Note:for class A type devices, the gateway will add the command to queue and send it when the class A device send uplinks.

Active vs. Passive PoE Switch: How to Choose? (30)

Step3. Publish Topic on MQTT Explorer to send downlink data to device.

Set a Downlink Data topic. If you need to send MQTT downlink to specific device, please add “$deveui” on the topic.

Example: /linovision/downlink/$deveui

Active vs. Passive PoE Switch: How to Choose? (31)

Publish Topic Format :

/linovision/downlink/[devEUI]

Example :

From the gateway, we can get the device EUI about the device we want to control:

Active vs. Passive PoE Switch: How to Choose? (32)

So we can publish a topic on the MQTT Explorer like below:

Topic:/linovision/downlink/24e124126a148401

Format:json

Content:

send as below format and replace the data content as downlink command

{"confirmed": true, "fport": 85, "data": "CQEA/w=="}

JavaScript

Active vs. Passive PoE Switch: How to Choose? (33)

After clickPublish, we can go toNetwork Server > Packetsto check. If the gateway have subscribe corresponding downlink topic data successfully, there will be at least one grayed message packet record.

Active vs. Passive PoE Switch: How to Choose? (34)

The MQTT downlink command format is fixed as below:

{"confirmed": true, //Set as true or false"fport": 85, //application port of device"data": "BwAA/w==" //base64 format downlink command}

JavaScript

ForLinovisiondevices, clickhereto convert hex format command to base64 format. Here areLinovisioncontroller common commands:

Model

Command

Command (Hex)

Command (base64)

IOT-C50x

Set GPIO1 low

Set GPIO1 high

Set GPIO2 low

Set GPIO2 high

030000ff

030100ff

040000ff

040100ff

AwAA/w==
AwEA/w==
BAAA/w==
BAEA/w==

IOT-C300

Set DO1 low

Set DO1 high

Set DO2 low

Set DO2 high

070000ff

070100ff

080000ff

080100ff

BwAA/w==
BwEA/w==
CAAA/w==
CAEA/w==

IOT-C11xx

Set DO1 low

Set DO1 high

Set DO2 low

Set DO2 high

090000ff

090100ff

0a0000ff

0a0100ff

CQAA/w==
CQEA/w==
CgAA/w==
CgEA/w==

----END---

`, published_at:``, sku:[] } allObj.sku.push("IOT-G65") allObj.sku.push("IOT-G67") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`How to Connect LoRaWAN Gateway to MQTT Broker?`, url:`/en-us/blogs/blog/how-to-connect-lorawan-gateway-to-mqtt-broker`, image:`//eu.linovision.com/cdn/shop/articles/MQTT_Broker_720x_1cac1b42-b20f-4266-9c38-78b5fa9ca792.webp?v=1713232955`, content:`

When working as embedded network server,Linovision LoRaWAN gateways support sending data packets to third party MQTT/HTTP/HTTPS server. We can create a new application on gateway, which can define the method of decoding the data sent from LoRaWAN end-device and choosing MQTT data transport protocol to send data to MQTT server.

Active vs. Passive PoE Switch: How to Choose? (35)

  • LoRaWAN Gateway: IOT-G8x (Firmware version 80.0.0.64 or later),IOT-G65,IOT-G67,IOT-G56,IOT-G63 V1
  • MQTT Server/Broker
  • MQTT client tool: take MQTT Explorer as example

Step1. Enable the gateway built-in network server.

Go toPacket Forwarder > Generalto enable the localhost server address.

Active vs. Passive PoE Switch: How to Choose? (36)

Enable the Network server onNetwork Server > Generalpage.

Active vs. Passive PoE Switch: How to Choose? (37)

Step2. Add an Application

Go toNetwork Server>Applicationsto add a new application, click save.

Name:user-defined, arbitrary value

Description:user-defined, arbitrary value

Active vs. Passive PoE Switch: How to Choose? (38)

Step3. Connect gateway to MQTT broker.

Go toNetwork Server > Applicationsto add a “data transmission” for the application. One application can add only one MQTT integration.

Active vs. Passive PoE Switch: How to Choose? (39)

Active vs. Passive PoE Switch: How to Choose? (40)

Fill in the MQTT broker information and create topic to store different data type, clicksave.

Broker Address:IP address/domain of MQTT broker

Broker Port:communication port of MQTT broker

Client ID:user-defined, a unique ID identity of the client to the server.

User Credentials and TLS should be enabled and configured as required.

Note:if MQTT broker is HiveMQ, please do enableTLSand set the option asCA signedservercertificate.

Active vs. Passive PoE Switch: How to Choose? (41)

After MQTT configuration complete, you can check connection status here:

Active vs. Passive PoE Switch: How to Choose? (42)

Step4. Add LoRaWAN nodes to the gateway.

Go toNetwork Server>Profilesto add a new profile, then click save. You can also use pre-defined profiles.

Name:user-defined, arbitrary value

Max TXPower:default value

Other parameters can be checked from LoRaWAN nodes user guide or you can keep all settings by default.

Active vs. Passive PoE Switch: How to Choose? (43)

Go toNetwork Server>Deviceto add a new device, clickSave&Apply.

Device Name:user-defined, arbitrary value

Description:user-defined, arbitrary value

Device-Profile:choose one of corresponding profiles added before.

Application:choose one of corresponding applications added before.

Other parameters can be confirmed with the LoRaWAN node manufacturers.

Active vs. Passive PoE Switch: How to Choose? (44)

When the status shows as below, that’s mean above steps are done correctly.

Active vs. Passive PoE Switch: How to Choose? (45)

Step5. Add uplink data topic.

Customize the uplink data to publish to MQTT broker and save the settings. If you add “$deveui” on your topic, you can replace it as real device EUI when subscribing topics.

Example: /linovision/uplink/$deveui

Active vs. Passive PoE Switch: How to Choose? (46)

Step6. Subscribe topic from MQTT client to get uplinks.

MQTT explorer is a comprehensive MQTT client and it can be replaced to other kinds of MQTT client tools(MQTT.fx, MQTT Box, etc.)

Open the MQTT Explorer, and fill in related MQTT server information in the popup window.

Name:user-defined

Protocol:mqtt://

Host:MQTT broker address

Port:broker port

User name/Password:if there is user credentials, please fill in it. If not, keep them blank.

Active vs. Passive PoE Switch: How to Choose? (47)

ClickADVANCED,copy the Uplink data topic on the gateway, and paste it on the MQTT explorer, click+ADD.

Active vs. Passive PoE Switch: How to Choose? (48)

Active vs. Passive PoE Switch: How to Choose? (49)

Keep MQTT client ID by default,then clickBACKand clickCONNECT.

Active vs. Passive PoE Switch: How to Choose? (50)

Active vs. Passive PoE Switch: How to Choose? (51)

After while, the data will be forwarded to MQTT broker and the MQTT Exploerer can receive the data from MQTT server.

Active vs. Passive PoE Switch: How to Choose? (52)

The uplink format is fixed as json and the content is as below.

{ "applicationID": 1, // application ID "applicationName": "cloud", // application name "deviceName": "24e1641092176759", // device name "devEUI": "24e1641092176759", // device EUI "time": "2020-0327T12:39:05.547336Z", // uplink receive time "rxInfo": [ // lorawan gateway information related to lora { "mac": "24e124fffef021be", // ID of the receiving gateway "rssi": -57, // signal strength (dBm) "loRaSNR": 10, // signal to noise ratio "name": "local_gateway", // name of the receiving gateway "latitude": 0, // latitude of the receiving gateway "longitude": 0, // longitude of the receiving gateway "altitude": 0 // altitude of the receiving gateway } ], "txInfo": { // lorawan node tx info "frequency": 868300000, // frequency used for transmission "dataRate": { "modulation": "LORA", // LORA module "bandwidth": 125, // bandwidth used for transmission "spreadFactor": 7 // spreadFactor used for transmission }, "adr": false, // device ADR status "codeRate": "4/5" // code rate }, "fCnt": 0, // frame counter "fPort": 85, // application port "data": "AWcAAAJoAA==" // base64 encoded payload (decrypted)}

If you need to send downlink commands from MQTT client, please refer to articleHow to Remotely Control Devices via MQTT on Linovision Gateway.

Q1.How to send decoded or customize uplink content to MQTT broker?

A1:Yes, this needs to use Payload Codec feature on the gateway. Reference articles:

IOT-G56/G65/G67:How to Use Payload Codec onLinovision Gateway

IOT-G63 V1/G8x:How to Use Payload Codec onLinovision Gateway (Old)

Q2.What’s the troubleshooting when the status of MQTT server connection is “Disconnected”.

Active vs. Passive PoE Switch: How to Choose? (53)

A2:

1) Go toMaintenance > Tools >Ping, check if the gateway can ping to the broker address successfully.

Active vs. Passive PoE Switch: How to Choose? (54)

2) Check if your MQTT client tool can connect to MQTT broker well, then follow the settings of MQTT client tool to configure the gateway.
3) CheckifthegatewayMQTTclientIDisconflictwithotherMQTTclients.
4) CheckifCPUloadistoohigh,andifthereislittleavailableRAMandeMMC.
5) Change the log severity to Debug and replicate the disconnection problem, then download all log files and send them tosupport@linovision.com.

Active vs. Passive PoE Switch: How to Choose? (55)

Q3.Why the connection status shows “connected” but MQTT client does not receive any data?
A3:
1)EnsurethedeviceshasbeenaddedtogatewayandgotoNetwork Server > Packetstocheckifthereareuplinkpacketsfromdevicesregularly.
2) Ensure the devices has been added to the correct Application.
3) Ensure the gateway firmware is upgraded to latest version.
4) Change the log severity to Debug and replicate the disconnection problem, then download all log files and send them tosupport@linovision.com.

Active vs. Passive PoE Switch: How to Choose? (56)

`, published_at:``, sku:[] } allObj.sku.push("IOT-G65") allObj.sku.push("IOT-G67") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`90W 802.3bt PoE Powering any Ethernet Device with a Single Ethernet Cable`, url:`/en-us/blogs/blog/90w-802-3bt-poe-powering-any-ethernet-device-with-a-single-ethernet-cable`, image:`//eu.linovision.com/cdn/shop/articles/PoE_90W_BT.webp?v=1712814778`, content:`

The new IEEE 802.3bt Power over Ethernet (PoE) standard allows standard Ethernet cables to carry up to 90 W of power, opening the doors to almost any Ethernet device being powered by a single Ethernet cable. Yet despite being in the market for over a decade, PoE technology is often shrouded in a cloud of mystery and confusion.

While the latest standard adds new features beyond increased power delivery, it is also more complex than previous standards. But take heart, this article will introduce you to PoE basics and some new features in the 802.3bt standard, as well as give you enough background to make complex PoE white papers, app notes, and datasheets understandable.

The PoE Connection

“Being powerful is like being a lady. If you have to tell people you are, you aren't.” —Margaret Thatcher

On the surface, PoE sounds complex: Inject high power onto a cable designed for data without disrupting the high-speed traffic the cable is carrying. Fortunately, the Ethernet standard and the cable design greatly simplify this technology. As shown inFigure 1, inside the Ethernet cable itself are four twisted pairs of wires. Ethernet is an isolated network, so each twisted pair connects to a transformer. All PoE does is inject a dc voltage (~54 V) onto the twisted pairs of the Ethernet cable through center taps on the transformers.

Active vs. Passive PoE Switch: How to Choose? (57)

1. Inside the Ethernet cable are four twisted pairs of wires. IEEE 802.3af/at powers two of the four twisted pairs and IEEE 802.3bt powers all four twisted pairs.

In a two-pair power configuration (802.3af, 802.3at), one twisted pair is positive and the other is negative. In a four-pair power configuration (802.3bt), two twisted pairs are positive and two are negative. The power-sourcing equipment (PSE) is the device putting power onto the cable, and the powered device (PD) is the device taking power off of the cable.

Finally, the PoE standards enable the PSE to power the twisted pairs in either polarity. Therefore, the PD must have input bridges (diodes or FETs) to set the polarity of the incoming power.

Detection

“Eighty percent of success is showing up.” —Woody Allen

Now we know how to put power onto the Ethernet cable, so the PSE can just blast power down the cable whenever something is connected, right? Wrong! Applying power to a non-PoE device can damage it. PoE starts with a detection phase in which the PSE determines if the connected device is a PD requesting power. The PSE applies two voltages between 2.7 and 10.1 V onto the Ethernet cable, and the PD presents a 25-kΩ resistance, signaling to the PSE that a valid PD is connected(Fig. 2).

Active vs. Passive PoE Switch: How to Choose? (58)

2. The PSE injects between 2.7 and 10.7 V onto the Ethernet cable and measures the current to check for a valid detection signature of 25 kΩ

Classification

“Never sacrifice your class to someone who has none.” —Unknown

.Once a valid PD is detected, the PSE and PD then do an analog handshake known as “classification,” in which the PD requests a power “class” and the PSE then tells the PD what class is granted. PoE technology uses the terms type and class when discussing power. Type simply denotes the kind of analog handshake from the PSE. Class defines the maximum power the PSE will put onto the cable and the maximum power the PD can draw from the cable. Because PoE follows the Ethernet standard, the cable can be up to 100 meters in length, so a fair amount of power is lost in the cable. Thetablelists the various PoE types and classes.

Active vs. Passive PoE Switch: How to Choose? (59)

The IEEE PoE standards specify the power from the PSE and the power delivered to the PD.

Let’s start with the simplest classification handshake, type 1(Fig. 3). The PSE puts 15.5-20.5 V onto the cable and measures the PD’s current draw. Due to cable loss, the PD will see 14.5-20.5 V from the PSE during classification. Based on the PD’s current draw, the PSE determines the PD’s requested class and either powers it on or, if the PSE doesn’t have sufficient power, doesn’t apply power.

Active vs. Passive PoE Switch: How to Choose? (60)

3. The voltage waveforms seen by the PD during type 1 detection, classification, and power on.

The amount of current drawn by the PD during classification is, confusingly enough, referred to as the classification signature or classification current. 802.3bt defines five classification signatures the PD can draw during classification.

Type 2 builds on type 1 by adding a second classification pulse(Fig. 4). During classification, the PD draws 40 mA (classification signature 4) to signal class 4 to the PSE. A type 1 PSE simply sees this as a request for class 3 power and proceeds to power the PD. A type 2 PSE responds to the higher current by lowering the classification voltage to a “mark” voltage to create a pulse. It then repeats this procedure to create a second classification pulse and powers the PD. The two classification pulses signal to the PD that class 4 power has been granted by the PSE.

Active vs. Passive PoE Switch: How to Choose? (61)

4. The voltage waveforms seen by the PD during type 4 detection, classification, and power on.

Here’s where you come in as the PD designer. A PD requesting class 4 might not get it from the PSE. It might receive less than it asked for through “power demotion,” and your design will need to make do with less power. Keep reading—we will get there in a few more paragraphs.

Now the moment you’ve been waiting for: 802.3bt classification(Fig. 5). As you might have guessed, it’s very similar to type 1 and 2; it just adds more classification pulses. Type 3 increases the number of classification pulses to four, and type 4 uses five pulses.

Active vs. Passive PoE Switch: How to Choose? (62)

5. More classification pulses are involved with 802.3bt classification.

When a PD requests type 3 or 4 power, it draws 40 mA (classification signature 4 current) for the first two pulses and then lowers its current draw to the classification signature 3, 2, 1, or 0 level for the subsequent pulses. The lower current tells the PSE how much power the PD is requesting. In fact, after the third pulse, the PSE has determined how much power the PD wants, and the additional pulses simply tell the PD how much power is being granted by the PSE.

If the PSE generates four classification pulses, then the PD is granted type 3 power. Five classification pulses signal the PSE granting type 4 power to the PD. In other words, if the PD asked for class 7 or 8 power and the PSE grants type 4, then the PD gets the power it requested. Likewise, if the PD requests class 5 or 6 and the PSE grants type 3, then the PD receives the power it requested. With this information, you now know the key aspects of 802.3bt PoE classification.

But wait, what’s this long first classification pulse, you might ask? And what happens if the PSE doesn’t grant the PD the power it requests? Hold that thought, we will get there shortly.

Power Demotion

“Tact is the ability to tell someone to go to hell in such a way that they look forward to the trip.” —Winston Churchill

Most PoE-enabled Ethernet switches don’t have enough power capacity for full power on each PoE Ethernet port, especially at 90 W per port, which adds up quickly. The PoE standard provides a simple way for the PSE to still power a PD but with less power than the PD requested—this is called power demotion. When a PSE demotes a PD, it assigns it a lower type than the PD requests. Because PSEs can only assign type to a PD, when a PD is demoted to a lower type, it’s automatically assigned the highest power level within that type. Let’s look at two examples of how this works.

Example 1:A PD requests class 8 power, but the PSE only has class 6 power available. In this scenario, the PSE demotes the PD to type 3, and the PD receives class 6 power.

Active vs. Passive PoE Switch: How to Choose? (63)

Example 1: A PSE with class 6 power available demotes a PD requesting class 8 to type 3, resulting in the PD receiving class 6 power.

Example 2:A PD requests class 8 power, but the PSE only has class 5 power available. Because the PSE can only demote the PD by type, it can’t assign the PD class 5 power. If it granted the PD type 3 power, the PD would be assigned class 6 power. Instead, it must demote the PD to class 4, type 2 power.

Active vs. Passive PoE Switch: How to Choose? (64)

Example 2: A PSE with class 5 power available demotes a PD requesting class 8 to type 2, resulting in the PD receiving class 4 power.

As a system designer, you understand what’s important here is to recognize the different power demotion options available to the PSE based on the class the PD is requesting. A class 8 PD may be demoted to class 6, class 4, and class 3 power. To ensure full compatibility, the PD system needs to operate at all four power levels. Otherwise the PSE will shut down the connected PD for drawing too much power. Most PD devices on the market include some method for communicating the received type back to the main PD system controller, such as two digital pins or a comm port.

Power On

“The measure of a man is what he does with power.” —Plato

Power on is the final stage of a PD receiving power. The IEEE PoE spec includes the inrush current that a PD may draw during power up. Most modern PD devices include built-in inrush current limiting. All the designer needs to do is follow the PD device’s recommended input capacitance and let it take care of the rest.

Maintain Power Signature

“Power does not corrupt. Fear corrupts. Perhaps the fear of a loss of power.” —John Steinbeck

The previous PoE standards include the concept of Maintain Power Signature (MPS). If a PD draws less than 10 mA of current, the PSE disconnects the PD. The MPS feature enables the PD to draw short pulses of current to maintain the connection to the PSE when the PD system is in a low-power state.

The new 802.3bt standard introduces a shorter MPS pulse to maintain the PSE connection, allowing PDs to enter an even lower-power state. Remember the long first class pulse from the type 3 or 4 PSE? This signals to the connected PD that the PSE supports short MPS, and the PD may use short MPS pulses to maintain the connection.

Just like with inrush, most 802.3bt PDs automatically switch to short MPS when connected to a PSE that supports the feature. Short MPS allows the system to enter a lower-power state than with previous PoE standards.

Autoclass, LLDP, and Closing Thoughts

“You must never try to make all the money that’s in a deal. Let the other fellow make some money too, because if you have a reputation for always making all the money, you won’t have many deals.” —J. Paul Getty

There’s one last new feature in the 802.3bt standard worth mentioning—autoclass. With autoclass, a PD draws the maximum power it will ever consume shortly after power up. This allows the PSE to measure the actual power the PD will consume and adjust power allocation accordingly. A PD may request class 8 (90 W) of power, but in reality, only draw 80 W. With autoclass, the PSE can measure this and then have 10 W of power to provide to other PDs in the system.

Another advanced feature of PoE is the Link Layer Discovery Protocol (LLDP). Ethernet networks have used LLDP for years to enable switches and routers to discover various details using the data layer. PoE adds an extension to LLDP for the PSE and PD to also communicate information over the data layer. For example, LLDP allows the PSE and PD to renegotiate power in one-tenth-of-a-watt increments, possibly freeing up power for the PSE or granting the PD slightly more power.

The 802.3bt standard brings unprecedented levels of both literal and figurative power to PoE system designers. In addition, it delivers several useful new features, such as short MPS, that bring more flexibility to PoE connected systems. With the ubiquitous nature of Ethernet networks and the higher power of 802.3bt PoE, more and more systems will take advantage of this technology to eliminate external power supplies.

`, published_at:``, sku:[] } allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`How safe is Power over Ethernet?`, url:`/en-us/blogs/blog/how-safe-is-power-over-ethernet`, image:`//eu.linovision.com/cdn/shop/articles/How_Safe_550_x_300.png?v=1712731594`, content:`

Power over Ethernet (PoE) emerges as a game-changer, seamlessly powering devices and transmitting data through a single cable. From security cameras to Wi-Fi networks, PoE has become ubiquitous. Yet, questions persist about its safety when mixing electricity and data.

To address these concerns, we conducted a striking experiment, submerging a powered PoE switch's RJ45 connector in water alongside a hand. Despite the unconventional scenario, PoE technology's safety features shine. With low voltage operation, active power management, and built-in protection mechanisms, PoE proves itself resilient against electrical hazards.

This demonstration not only reaffirms PoE's safety but also instills confidence in its reliability for network administrators and users. While extreme conditions are not the norm, understanding PoE's safety capabilities dispels doubts and underscores its suitability for powering network devices securely. Join us as we unravel the safety of Power over Ethernet, redefining modern connectivity standards.

`, published_at:``, sku:[] } allObj.sku.push("POE-Switch0504GD") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`PoE Power Sourcing Equipment (PSE) FAQs`, url:`/en-us/blogs/blog/poe-power-sourcing-equipment-pse-faqs`, image:`//eu.linovision.com/cdn/shop/articles/PoE_faq_720x_58195b97-2d5b-44d6-891c-3311acb2a651.webp?v=1711697766`, content:`

To enhance comprehension of the PoE network system, it is essential to become acquainted with the PoE devices, as the initially published IEEE802.3af standard categorized Power over Ethernet (PoE) technology into two primary types of power devices: power sourcing equipment (PSE), which supplies power over the Ethernet cable, and powered devices (PD), which receive the power. Presented below is an introduction to power sourcing equipment and a selection of frequently asked questions.

Q: What Is PoE PSE?

A:PoE PSE, an acronym for Power Sourcing Equipment in Power over Ethernet (PoE) systems, represents the equipment responsible for delivering power to PoE PDs (Powered Devices). PoE PSEs detect and categorize the connected PoE devices, monitor power consumption, and allocate power to the devices based on their specific power requirements.

Q: What Are the Differences Between PoE PD and PoE PSE?

A:In a Power over Ethernet (PoE) system, two fundamental elements exist: PoE PD (Powered Device) and PoE PSE (Power Sourcing Equipment).

  • PoE PSE (Power Sourcing Equipment):PoE PSE denotes the equipment supplying power to PoE PDs. It can take the form of a PoE switch or a PoE injector. The PoE PSE injects power into the Ethernet cable, alongside data signals, enabling connected PoE PDs to receive both power and data through a single cable. It serves as the power source for PoE devices.

  • PoE PD (Powered Device):PoE PD refers to the device that draws power from the PoE network infrastructure. It encompasses various device types, such as IP phones, wireless access points, IP cameras, and network switches. The PoE PD consumes power from the PoE PSE, allowing it to operate without the need for a separate power source. Typically, it features an Ethernet input for data communication and a power input to receive power from the PoE PSE.

Q: What Are the Common PoE PSEs?

A:PoE PSE (Power Sourcing Equipment) is vital for providing power to PoE-enabled devices in a network. Although the variety of PoE PSE devices is more limited compared to the diverse range of PoE PDs, there are several commonly deployed types in modern PoE networks. These include PoE switches, PoE injectors, PoE NVRs (Network Video Recorders), and PoE media converters. Here is an overview of these commonly used PoE PSE devices:

Active vs. Passive PoE Switch: How to Choose? (65)

  • PoE Switch:The PoE network switch integrates PoE injection, allowing it to transmit both data and power over a single Ethernet cable directly to the connected PD.

  • PoE Injector:PoE injector is used to add PoE capability to regular non-PoE network connections. It injects power into the data stream originating from a non-PoE switch and delivers both power and data to the PD via an Ethernet cable.

  • PoE NVR:PoE NVR (Network Video Recorder) incorporates built-in PoE injection. It is commonly employed in IP video surveillance systems, responsible for encoding and processing video data from IP cameras and recording it for storage and remote viewing. The PoE NVR can also supply power to IP cameras via Ethernet cables.

  • PoE Media Converter:PoE media converter facilitates the connection between fiber cabling and a copper network while concurrently providing PoE power to PoE PDs like IP cameras and VoIP phones.

  • PoE Splitter:ThePoE splitter is capable of delivering power, but its primary function is to provide power to non-PoE terminal devices. It accomplishes this by splitting power from the data stream and delivering it to the non-PoE device through a separate power supply cable. PoE splitters are advantageous for deploying remote non-PoE devices without nearby AC outlets.

Q: Do I Still Need A PoE Injector if I Have a PoE Switch?

A:If you have a PoE switch, there is no requirement for a PoE injector. When utilizing a standard PoE switch, the power connection is already included, rendering the use of an injector unnecessary. However, if you are utilizing a non-PoE switch, a PoE injector becomes essential for supplying power to PoE PDs like IP cameras, as non-PoE switches do not provide power to PoE devices. It is worth noting that PoE injectors are typically suitable for smaller-scale PoE networks with only a few PDs. For networks with a larger number of PDs, opting for a PoE switch is a more advantageous choice.

Active vs. Passive PoE Switch: How to Choose? (66)

Q: Can I Use A PoE Switch with NVR?

A:Yes, you can.A PoE switch not only functions as a hub but also has the capability to provide power to an NVR (Network Video Recorder) without requiring an external power source or additional power cables. This feature significantly reduces installation costs and simplifies cabling complexity, as both power and video can be transmitted over a single Cat5 cable.

Active vs. Passive PoE Switch: How to Choose? (67)

Q: Can I Use a Media Converter with PoE Switch?

A:Certainly. It is true that PoE switches have a distance limitation of 100 meters for Ethernet cables. However, when we need to extend beyond this limit, a PoE media converter becomes an excellent solution. A PoE media converter addresses the distance challenge by providing a copper-to-fiber connectivity solution. It serves as the PoE PSE on the copper side, enabling the powering of PDs while extending the network over fiber optic cables to reach greater distances. This allows us to overcome the 100-meter limitation of PoE switches.

Active vs. Passive PoE Switch: How to Choose? (68)

Q: Can I Use a PoE Splitter as a PoE Injector?

A:No, PoE splitters and PoE injectors are distinct types of PoE devices that can often lead to confusion. As mentioned earlier, PoE injectors are utilized with non-PoE switches to provide power to PoE devices connected to them. On the other hand, PoE splitters are used in conjunction with PoE PSEs (Power Sourcing Equipment) and separate the data and power signals onto separate cables for non-PoE devices.

To provide a clearer understanding, please refer to the accompanying figure which illustrates the typical applications of PoE splitters and PoE injectors:

Active vs. Passive PoE Switch: How to Choose? (69)

Conclusion

With the increasing need for streamlined installations and the recent adoption of standards to support a broader range of smart devices, the adoption of Power over Ethernet (PoE) technology is anticipated to witness significant growth in the future. Consequently, it becomes crucial for us to gain a comprehensive understanding of the aforementioned PoE PSE devices, particularly when making purchasing decisions for establishing PoE networks. This knowledge will enable us to make informed choices and effectively build PoE infrastructure to meet our requirements.

`, published_at:``, sku:[] } allObj.sku.push("POE-Switch0504GD") allObj.sku.push("POE-Switch1008-Solar") allObj.sku.push("POE-SW508G") allObj.sku.push("POE-IN9001") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`How to Choose the Suitable PoE Switches for IP Camera Systems?`, url:`/en-us/blogs/blog/how-to-choose-the-suitable-poe-switches-for-ip-camera-systems`, image:`//eu.linovision.com/cdn/shop/articles/How_to_Choose_PoE_Switches_720x_157e064a-f1bd-4e14-b23b-e4e533ba62b4.webp?v=1710925168`, content:`

IP cameras play a crucial role in business surveillance systems, providing visibility and insights into your operations. They are equally popular for home security purposes. PoE switches for IP cameras have become increasingly common, simplifying cabling by combining power and data transmission over a single Ethernet cable. These switches offer versatile solutions for both home and business surveillance needs. In this article, we will discuss the key factors to consider when choosing a PoE switch, share some purchasing tips, and empower you to make an informed decision that aligns with your specific requirements.

Active vs. Passive PoE Switch: How to Choose? (70)

Why Use the PoE Switch for IP Camera Systems?

  • Power and Data Integration: The PoE switch efficiently combines power and data transmission on a single line, eliminating the need for separate power supplies for each camera or traditional power boxes.
  • Extended Cable Runs: PoE switches enable longer distance connections without concerns about voltage loss or cable quality. While Ethernet is typically limited to 328 feet, the range can be easily extended by using PoE network switches or extenders. This flexibility is particularly beneficial for outdoor and large-scale surveillance setups.
  • Simplified Cabling: With PoE technology, both power and data can be transmitted through a single Ethernet cable. This simplifies the cabling process and reduces installation costs.
  • Multiple Device Connectivity: PoE switches are available in various port configurations, allowing you to connect multiple IP cameras and other PoE devices to a single switch. This facilitates efficient management and scalability within your surveillance system.

How to Choose The Suitable PoE Switch for IP Camera Systems?

Factors to Consider When Choosing a PoE Switch for IP Security Cameras:

  1. Port Speed, Port Numbers, and Power Requirements: Consider the bandwidth capacity offered by the PoE switch, such as fast-Ethernet switches (10-100 Mbps) or gigabit switches (1 Gbps). Evaluate the number of ports needed to connect your IP cameras and ensure their power requirements are supported.
  2. Power Supply Voltage: Verify that the switch's power supply voltage matches the voltage requirements of your IP cameras to prevent malfunctions and potential damage.
  3. Power Budget: Assess the switch's power budget, which is the maximum wattage it can provide. Make sure the total wattage required by the connected devices, including IP cameras, does not exceed the switch's maximum power budget. Check the budget per port to ensure it can adequately power your cameras.
  4. Managed vs. Unmanaged PoE Switches: Determine whether you require a managed or unmanaged PoE switch. Unmanaged switches are plug-and-play, suitable for simple setups and home users. Managed switches offer advanced features like network optimization, remote control, and enhanced network status monitoring, making them ideal for larger surveillance projects in enterprises or large facilities.

Active vs. Passive PoE Switch: How to Choose? (71)

Tips for Choosing the Right PoE Switch for Your IP Camera System:

  • Calculate Power Requirements: Determine the total power needed by your IP cameras and ensure the PoE switch's power budget can handle the load.
  • Plan for Expansion: Consider potential future camera expansions and choose a switch with additional ports to accommodate future growth.
  • Consider Environmental Conditions: If your cameras will be installed in harsh environments, opt for industrial PoE switches that are specifically designed to withstand extreme conditions.
  • Evaluate the Scale of the Project: For large-scale surveillance projects, a managed PoE network switch provides greater flexibility, control, and oversight, allowing for optimized network performance and centralized management.


By following these tips, you can select a PoE switch that meets your specific power requirements, allows for future scalability, suits the environmental conditions, and provides the desired level of control and management for your IP camera system.To make an informed decision, consider the following tips.

How to Connect IP Cameras to a PoE Switch?

Connecting IP cameras to a PoE switch might sound complex, but it's relatively straightforward. Here are the general steps involved:

  1. Start by connecting your router to the LAN port on the PoE switch using an Ethernet cable (Cat5e or Cat6). This establishes the network connection between the switch and your router.
  2. Plug the power cable into the PoE switch and connect it to a power outlet or a surge protector. This provides power to the switch and ensures its operation.

  3. Take Ethernet cables and connect each IP camera to the available ports on the PoE switch. Ensure a secure and stable connection by properly inserting and securing the cables.

  4. To view and record the footage from the IP cameras, add them to your Network Video Recorder (NVR) or a compatible surveillance software. This step allows you to manage and access the camera feeds.

  5. If remote access is required for viewing the camera feeds from outside your local network, make sure your router is connected to the internet. This enables remote access to the cameras using the appropriate network configurations.

Note:If you need a PoE switch for demanding environments like traffic control cabinets, factory floors, or outdoor locations with extreme temperatures, considerLinovision's industrial PoE switches. These switches comply with IEEE 802.3af/at PoE standards, automatically detect power requirements, and provide power accordingly. They are designed to withstand high levels of vibration and shock, making them ideal for outdoor surveillance deployments in harsh conditions ranging from -40°C to 75°C.

Active vs. Passive PoE Switch: How to Choose? (72)

Summary

Selecting the appropriate PoE switch is crucial to ensure an efficient and dependable IP camera system. By taking into account factors such as port numbers, power supply voltage, power budget, maximum power supply, bandwidth capacity, and the choice between managed and unmanaged switches, you can tailor your selection to meet your specific requirements. At Linovision, we offer a range of PoE switches including unmanaged and managed options with varying port configurations (4-port, 5-port, 8-port, 16-port, 24-port), as well as industrial switches designed for diverse IP camera security systems. For more information, please visit theLinovision PoE Switchespage.

`, published_at:``, sku:[] } allObj.sku.push("POE-SW508G") allObj.sku.push("POE-SWR308G25") allObj.sku.push("POE-SWR308G") allObj.sku.push("POE-SWR608G") allObj.sku.push("POE-Switch0504GD") allObj.sku.push("POE-Switch1008-Solar") allObj.sku.push("POE-SW708GM") allObj.sku.push("POE-SW708GM-DC12V") allObj.sku.push("POE-SW716GM-10G") allObj.sku.push("POE-SW805G5U-Solar") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`4K Anti-corrosion Camera with Tailored Coating for Sea Shores and Marine`, url:`/en-us/blogs/blog/4k-anti-corrosion-camera-with-tailored-coating-for-sea-shores-and-marine`, image:`//eu.linovision.com/cdn/shop/articles/Banner.png?v=1710836680`, content:`

IPC608AC, it isLINOVISION 4K Ultra HD Anti-corrosion Camera with Tailored Coating, POE IP Camera with Intuitive WEB GUI and Mobile APP, Designed for Sea Shores, Marine, Chemical Factories, Mining Industry, Ports.

Active vs. Passive PoE Switch: How to Choose? (73)

Outstanding Features:

  • 4K ULTRA HD RESOLUTION- Presenting 8 Megapixels (3840x2160) vivid video with 4x more details than regular HD camera; Wide view angle; Efficient bandwidth control with the advanced H.265 compression.
  • ANTI-CORROSION DESIGNED- Stainless steel with special coating tailored to resist corrosion, dedicated anti-corrosion cable, powerful sealing performance, designed to be used in corrosive environment permanently.
  • EASY REMOTE ACCESS- Comes with intuitive WEB GUI, compatible to Chrome/Safari/IE/Edge and no plug-in or ActiveX is required; Free mobile App with Cloud access; Also provide PC based VMS software to centralized manage tens of cameras from different sites. Offer API for 3rd party access.
  • MAX 30m IR DISTANCE- Equipped with 2 IR LEDs to enable max 30m night vision distance.
  • 800m LONG RANGE VERSION IS AVAILABLE- Working with POE-EXT3001LP(2 Pack), the transmission distance can be extended to 800m. It is widely used in Mining Industry and other places where need long distance application.

Active vs. Passive PoE Switch: How to Choose? (74)

`, published_at:``, sku:[] } allObj.sku.push("IPC608AC") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`PoE vs PoE+ vs PoE++ Switch: How to Choose?`, url:`/en-us/blogs/blog/poe-vs-poe-vs-poe-switch-how-to-choose`, image:`//eu.linovision.com/cdn/shop/articles/PoE_vs_PoE_vs_PoE_Switch_720x_a2b10eea-cc7f-4030-8497-270c441a3ff0.webp?v=1710748123`, content:`

Power over Ethernet (PoE) is a well-established technology that allows both data and power to be transmitted over the same Ethernet cable, providing significant time and cost savings for local area networks (LANs). In today's market, you will come across different types of PoE switches, including PoE switches, PoE+ switches, and PoE++ switches. But do you understand the differences between these three types? And how do you make the right choice among them?

What Is PoE and PoE Switch?

What is PoE?Power over Ethernet (PoE) is a technology defined by the IEEE 802.3af standard in 2003. It enables powered devices (PDs) such as VoIP phones to receive power, up to 12.95W, through Ethernet cabling using two of the available twisted pairs.

Thenwhat is a PoE switch?A PoE switch, on the other hand, is a type of power sourcing equipment (PSE) that incorporates PoE technology. It provides power to PDs via Ethernet cables, facilitating network connectivity. Typically, an 802.3af PoE switch supports a maximum power consumption of 15.4W per PoE port, with a voltage range between 44V and 57V. The PDs connected to the PoE switch operate within a voltage range of 37V to 57V.

Active vs. Passive PoE Switch: How to Choose? (75)

What Is PoE+ and PoE+ Switch?

PoE+ technology, defined by the IEEE 802.3at standard in 2009, is an advancement of PoE technology. With increasing power requirements of devices like wireless access points, PoE+ was introduced to support higher power consumption.

Similar to PoE switches, PoE+ switches also deliver power over two pairs of Ethernet cables. However, PoE+ adds an additional power class that can provide up to 25.5W of power to a powered device (PD) within a voltage range of 42.5V to 57V. Each port of a PoE+ switch can deliver a maximum power of 30W within a voltage range of 50V to 57V.

What Is PoE++ and PoE++ Switch?

In the pursuit of providing even more power for a wider range of devices, the IEEE 802.3 standard further upgraded PoE+ technology to PoE++ (IEEE 802.3bt standard) in 2018. PoE++ is divided into two types: Type 3 and Type 4. Type 3 enables power delivery of up to 51W to a PD using either two or all four twisted pairs in a copper cable. Type 4 allows power delivery of up to 71W to a PD using all four twisted pairs in an Ethernet cable.

PoE++ switches are the next generation of PoE+ technology. They support up to 60 watts of power per port under Type 3 and provide the highest power level for Power over Ethernet switches, delivering up to 100W per PoE port under Type 4.

PoE vs. PoE+ vs. PoE++ Switch: Which to Choose?

The choice of a PoE switch depends on specific requirements. To help make an optimal selection, consider the following aspects: specifications and applications.

Specifications of PoE vs. PoE+ vs. PoE++ Switch

Based on the information provided, the following reference chart summarizes detailed specifications of PoE, PoE+, and PoE++ switches:

PoEPoE+PoE++
IEEE StandardIEEE 802.3afIEEE 802.3atIEEE 802.3bt
PoE TypeType 1Type 2Type 3Type 4
Switch Port Power
Max. Power Per Port15.4W30W60W100W
Port Voltage Range44–57V50-57V50-57V52-57V
Powered Device Power
Max. Power to Device12.95W25.5W51W71W
Voltage Range to Device37-57V42.5-57V42.5-57V41.1-57V
Cables
Twisted Pairs Used2-pair2-pair4-pair4-pair
Supported CablesCat3 or betterCat5 or betterCat5 or betterCat5 or better

Note: The provided figures are theoretical and the total power capacity of PoE series switches in real-world applications may be oversubscribed when multiple devices use less than the maximum power. For example, having a switch with all PoE++ Type 4 ports doesn't mean all ports will be utilized at maximum load 24/7. Therefore, it is important to calculate the power requirements of all connected powered devices and choose appropriate patch cables for your PoE design.

Applications of PoE vs. PoE+ vs. PoE++ Switch

The key differences between PoE, PoE+, and PoE++ switches lie in their operational modes and power delivery, which determine their applications.

PoE switch

An 802.3af switch, also known as a PoE Type 1 switch, is typically used to support devices that require power delivery of less than 15.4W. Examples include:

  • Basic VoIP phones used over the internet

  • Wireless access points with two antennas for small networksStationary security cameras without pan, tilt, and zoom

  • Sensors, meters, etc.

  • Stationary security cameras without pan, tilt, and zoom functionality

PoE+ switch

PoE+ switch with 30W output can power Type 2 devices, such as:

  • IP telephones that offer fax, text messaging, and voice calls

  • Wireless access points with six antennas

  • Remote-controlled pan, tilt, and zoom (PTZ) surveillance cameras

  • Biometric sensors that collect biological characteristics

PoE++ switch

A PoE+ switch with 30W output is capable of powering Type 2 devices, such as:

  • Two-way video phone calls in a conferencing system

  • Building management devices such as gate or door controllers

  • Thin clients connected remotely to a server-based computing environment

  • Remote patient monitoring devices

And thePoE++ Type 4 switchcan support devices such as laptops and TVs.

Active vs. Passive PoE Switch: How to Choose? (76)

If your data center or network has relatively low power requirements, a PoE switch would be suitable. However, if you need a more powerful and versatile network that can accommodate a diverse range of devices, a PoE+ or PoE++ switch would be a better choice. These switches offer increased power capacity and performance, allowing for more devices to be connected without being limited by port restrictions. They are particularly beneficial when building infrastructures with higher demands or when planning for future upgrades.

Of course, if your existing PoE network design meets your current demands and is adequate for your requirements, there is no need to change it. It is always wise to assess your specific needs and choose the appropriate switch that aligns with your power and performance requirements.

LinovisionPoE++ Switch

The main features of three Linovision PoE++ switches are shown below.

POE-SW508GPOE-SW708GMPOE-SW806GM-Solar
Description8-PortFull GigabitPoE++ Switch8-PortFull Gigabit L2
PoE++ Switch
4-Port L2 Managed Solar PoE++ Switch
Ports·8*10/100/1000BASE-T RJ45 auto-MDI/MDI-X ports
·2*1000Mbps SFP Slots
·4*10/100/1000Base-T PoE++ RJ-45auto-MDI/MDI-X ports
·4*10/100/1000Base-T PoE+ RJ-45 auto-MDI/MDI-X ports
·2*1G/2.5GBase-X SFP
·4*10/100/1000Mbps RJ45 Ports
·2*1000Mbps SFP Slots
Power Budget120W360W120W
ApplicationHarsh Environment Security, Industry, Business, OfficeIntelligent Transportation,
Harsh Environment Security, Industry
Solar Power PoE System; UPS Power PoE System

Conclusion

As power requirements continue to increase, the evolution of PoE technology has led to the development of PoE+, and subsequently PoE++. Similarly, PoE-based switches have advanced to PoE+ switches, and now to PoE++ switches. This article has provided insights into the distinctions between PoE, PoE+, and PoE++ switches, as well as their respective applications. We hope this information has inspired you to select a suitable PoE network switch for your needs.

`, published_at:``, sku:[] } allObj.sku.push("POE-SW508G") allObj.sku.push("POE-SW708GM") allObj.sku.push("POE-SW806GM-Solar") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Gaining insights into PoE Standards and Wattage`, url:`/en-us/blogs/blog/gaining-insights-into-poe-standards-and-wattage`, image:`//eu.linovision.com/cdn/shop/articles/PoE_Standards.webp?v=1710483790`, content:`

PoE (Power over Ethernet) technology revolutionizes the way power and data are transmitted over Ethernet cables. It enables Power Sourcing Equipment (PSE), such as a PoE switch, to deliver power and data simultaneously to Powered Devices (PD), including IP cameras and VoIP phones. This integration simplifies cabling installation, eliminates the need for separate power cables, and reduces overall costs.

To regulate the power delivery to PDs, the Institute of Electrical and Electronic Engineers (IEEE) has established various PoE standards, including IEEE 802.3af, 802.3at, and 802.3bt. These standards define the maximum power that PSEs can provide and the power requirements for PDs.

Let's delve into the details of these PoE standards and their associated wattage.

PoE Standards Introduction

PoE standards encompass three main types: IEEE 802.3af, IEEE 802.3at, and IEEE 802.3bt. These standards establish the minimum power that Power Sourcing Equipment (PSE) can provide and the maximum power that Powered Devices (PD) can receive.

Active vs. Passive PoE Switch: How to Choose? (77)

Figure 1: IEEE 802.3af, IEEE 802.3at and IEEE 802.3bt Introduction

1. IEEE 802.3af (Standard PoE)

Operating within a voltage range of 44-57V and delivering a current of 10-350mA, IEEE 802.3af ensures a maximum power output of 15.4W per port. Due to power loss over Ethernet cables, the minimum guaranteed power available at the Powered Device (PD) is 12.95W per port. This standard is commonly used for devices like VoIP phones and sensors.

2. IEEE 802.3at (PoE+)

As an upgraded standard compatible with IEEE 802.3af, PoE+ operates with a supply voltage ranging from 50V to 57V and a supply current of 10-600mA. It provides up to 30W of power per port on Power Sourcing Equipment (PSE), ensuring a minimum power output of 25W per port. This standard is suitable for devices like wireless access points and video conferencing systems.

3. IEEE 802.3bt

IEEE 802.3bt is the latest PoE standard that introduces two types of power delivery - Type 3 and Type 4. These types increase the maximum PoE power by utilizing multiple pairs of Ethernet cables. In Type 3 and Type 4 modes, PSEs identify the PDs and allocate power based on their maximum power requirements, resulting in an enhanced power delivery system. This standard includes support for higher-speed Ethernet standards like 2.5GBASE-T, 5GBASE-T, and 10GBASE-T, unlike the previous standards limited to 1-Gbps. It is designed for demanding applications such as laptops and LED lighting.

a. Type 3(PoE++)

Type 3, also known as PoE++, can deliver up to 60W per PoE port (with a minimum of 51W on each PD port). It is suitable for powering devices such as video conferencing system components.

b. Type 4(Higher-Power PoE)

Type 4 offers a maximum power output of 100W per PoE port (with a minimum of 71W on each PD port). This level of power delivery is ideal for devices like laptops and TVs.

Both Type 3 and Type 4 modes of IEEE 802.3bt are backward compatible with IEEE 802.3af and IEEE 802.3at standards. The following table summarizes the specifications of the PoE standards, including PoE wattage:

NameIEEEStandardPD Min. Power Per PortPSE Max. Power Per PortCable CategoryPower Over PairsReleased Time
PoEIEEE 802.3af12.95W15.4WCat5e2 pairs2003
PoE+IEEE 802.3at25W30WCat5e2 pairs2009
PoE++IEEE 802.3bt51W60WCat5e2 pairs class0-4,
4 pairs class5-6
2018
PoE++IEEE 802.3bt71W100WCat5e4 pairs class7-82018

Understanding PoE Wattage

As previously explained, IEEE 802.3af provides a maximum power output of 15.4W per port, while PoE+ (IEEE 802.3at) supports up to 30W. However, when connecting multiple devices to a single PoE/PoE+ switch, it becomes crucial to ensure that the combined power requirements of these devices do not exceed the maximum power wattage supported by the switch. This ensures that the switch can reliably provide sufficient power to all connected devices without overloading its capacity. Careful consideration and planning are necessary to avoid exceeding the switch's power limitations and maintain stable operation.

For example, let's take theLINOVISIONPOE-SW708GM-DC12V, a managed PoE++ switch with8 RJ45 ports and 2 SFP ports. Compliant with IEEE 802.3af/at/bt standards, this switch has a total power budget of 240W. This means it can concurrently power 8 devices compliant with PoE+ standards (30W x 8 = 240). It can also support 8 devices compliant with PoE standards (15W x8 = 120W).

Active vs. Passive PoE Switch: How to Choose? (78)

However, there is no need for concern as modern network switches are designed to be intelligent. When a device is connected, the switch automatically detects whether it is compatible with PoE or PoE+. If the device requires a low power of 5W, the switch supplies exactly that amount. If the device demands a higher power of 20W, the switch adjusts accordingly. And if you connect a device without PoE capability, rest assured that the switch will provide data transmission only.

How Much PoE Wattages are Need?

The power needs of your devices depend on what you're connecting. Most devices, such assecurity cameras, IP phones and standard wireless APs, require no more than 30 watts.

However, certain devices, such as 802.11ac wireless access points with multiple USB ports and radios, may require over 30 watts for optimal performance. In such cases, PoE++ or PoH switches are the ideal solution. It's worth noting that some devices can adapt to lower power availability by using fewer radios or disabling certain features.

Linovision Managed Switches: Your PoE Solution

At Linovision, we offer a range of PoE/PoE+/PoE++ switches that comply with the PoE standards, providing enhanced security and improved capabilities. These switches are available in 4,5,8 and 48 port options. They support layer 2+ switching features like VLAN and offer advanced management options such as WEB, CLI, TELNET, and SNMP. FS PoE/PoE+ switches can power any 802.3af or 802.3at compliant device on the market, providing flexibility and security. The table below provides specifications for four of our PoE/PoE+/PoE++ switches:

ModelPoE StandardPortSwitch CapacityPower BudgetForwarding RateAC/DC Power Supply
POE-SW708GMIEEE 802.3af/at/bt8x RJ45 | 2x SFP36 Gbps240W14.88 MppsDC
POE-SW716GM-10GIEEE 802.3af/at16x RJ45 | 4x SFP112 Gbps360W83.3 MppsDC
POE-SW328G-BT2000IEEE 802.3af/at/bt24x RJ45 | 4x SFP56 Gbps740W41.7 MppsDC/AC

Summary

Itis essential to have a clear understanding of PoE standards and wattage to ensure effective device connections. By aligning your devices' power requirements with the appropriate PoE standard, you can ensure smooth and reliable operation. PoE technology simplifies complex cabling setups and offers flexibility in power delivery.

`, published_at:``, sku:[] } allObj.sku.push("POE-SW708GM") allObj.sku.push("POE-SW716GM-10G") allObj.sku.push("POE-SW328G-BT2000") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`How Do PoE Switches Supply Power for PoE Powered Devices?`, url:`/en-us/blogs/blog/how-do-poe-switches-supply-power-for-poe-powered-devices`, image:`//eu.linovision.com/cdn/shop/articles/PoE_Switches_Supply_Power_for_PoE_Powered_Devices_720x_e4932907-51eb-4a93-9233-b6b52c251d4b.webp?v=1710137824`, content:`

Driven by the need for connectivity and monitoring of smart IoT devices, the PoE switch has evolved into an increasingly efficient method of delivering power and data over the network. This article aims to explain the operational principles and modes of thePoE switch's power supply, as well as the limited distance and maximum voltages associated with PoE switch supply.

Devices in PoE Network

A PoE network consists of two types of devices: power sourcing equipment (PSE) and powered devices (PD). The PSE supplies power to the PD. The PSE device typically takes the form of a PoE switch, while the PD devices encompass IP phones, IP surveillance cameras, wireless LAN access points, PoE lighting, and similar devices.

Working Process of PoE Switch Power Supply

To comprehend the working principles of the PoE switch power supply, let's examine the PoE network switch and PoE IP camera as an example to illustrate how the PoE switch power supply operates. Upon connecting a PoE IP camera to a PoE Ethernet switch, the following working process occurs:

Detection of PDs: Initially, the PoE switch delivers a minimal voltage through the port until it detects that the cable terminal connection corresponds to a PD that supports the IEEE802.3af standard. Typically, a 24.9kΩ resistor is employed in the PD equipment to verify compliance with the IEEE802.3af power supply standard. It is important to note that only active PoE network switches perform this check, while passive PoE network switches or injectors do not. The differences between active and passive PoE switches will be further illustrated here:Active vs. Passive PoE Switch: Which Should We Choose?

Classification of PoE Switch Power Supply Capability: After detecting the PD, the PoE switch supplies a voltage of 15-20V to the PD and determines its specific power requirement by measuring the current. The switch classifies the device into various types: Class 0, 1, 2, 3, 4, 5, 6, 7, and 8, based on the presence of a resistor, and provides the appropriate power accordingly.

ClassPSE Output Power (W)PD Input Power (W)
015.40.44-12.94
140.44-3.84
273.84-6.49
315.46.49-12.95
43012.95-25.50
54540 (4-pair)
66051 (4-pair)
77562 (4-pair)
89971.3 (4-pair)

Commencement of Power Supply:Once the Power over Ethernet classification is completed, the PSE device initiates power delivery to the PD device, starting from a low voltage that gradually ramps up to the full 48V DC within a configurable startup period (typically less than 15μs).

Normal Power Supply: Once the voltage reaches 48V, the PoE switch reliably and consistently provides a stable 48V DC power output to the PD.

Disconnection of PoE Switch Power Supply: The PoE switch swiftly (usually within 300-400ms) discontinues power supply and re-enters the PD detection procedure under the following circ*mstances:

  • The PD is removed.

  • The power consumption of the PD is overloaded or short-circuited.

  • The total power consumed by the PDs is out of the power budget of the PoE-powered switch.

In these situations, the switch and PDs are protected, preventing any potential damage to non-PoE devices inadvertently connected to the PoE ports after the PDs are disconnected.

PoE Switch Power Supply Mode

The power supply mode between the PSE and PDs in a PoE switch can be categorized into three distinct modes:

Mode A

In this mode, the PoE switch supplies power to PDs through data pair 1-2 and pair 3-6. Pair 1-2 represents the positive polarity, while pair 3-6 represents the negative polarity.

Mode B

In Mode B, the PoE switch delivers power to PDs via pair 4-5 and pair 7-8. In 10BASE-T and 100BASE-T, these two pairs are not used for data transmission and are referred to as spare pairs in 10/100M PoE applications. Pair 4-5 represents the positive polarity, while pair 7-8 represents the negative polarity.

The primary distinction between Mode A and Mode B lies in the utilization of PINs, as depicted visually in the following diagram:

Active vs. Passive PoE Switch: How to Choose? (79)

PSE devices can transmit power in two different modes: Mode A, also known as "endspan," where power is relayed through the data pairs, and Mode B, also known as "midspan," where power is relayed through the spare pairs. Compliant PSE devices are capable of supporting Mode A, Mode B, or both, while compliant PDs can work with both Mode A and Mode B. However, compatible PDs usually support Mode B only. Let's explore the working scenarios between switches and IP cameras based on these two modes.

Active vs. Passive PoE Switch: How to Choose? (80)

4-pair Delivery

In this mode, power is delivered using all four pairs. Pairs 1-2 and 4-5 serve as the positive polarities, while pairs 3-6 and 7-8 act as the negative polarities.

The table below illustrates the three modes in two distinct network scenarios:

10/100BASE-T Network1000BASE-T Network
Pins at SwitchPoE Mode A (Data & Mixed DC)PoE Mode B (DC on Spares)4-pair PoEPoE Mode A (Bi-Data & DC)PoE Mode B (Bi-Data & DC)4-pair PoE
Pin 1Rx + & DC +Rx +Rx + & DC +TxRx A + & DC +TxRx A +TxRx A + & DC +
Pin 2Rx - & DC +Rx -Rx - & DC +TxRx A - & DC +TxRx A -TxRx A - & DC +
Pin 3Tx + & DC -Tx +Tx + & DC -TxRx B + & DC -TxRx B +TxRx B + & DC -
Pin 4UnusedDC +DC +TxRx C +TxRx C + & DC +TxRx C + & DC +
Pin 5UnusedDC +DC +TxRx C -TxRx C - & DC +TxRx C - & DC +
Pin 6Tx - & DC -Tx -Tx - & DC -TxRx B - & DC -TxRx B -TxRx B - & DC -
Pin 7UnusedDC -DC -TxRx D +TxRx D + & DC -TxRx D + & DC -
Pin 8UnusedDC -DC -TxRx D -TxRx D - & DC -TxRx D - & DC -

Please note that the Power over Ethernet (PoE) power supply mode is determined by the Power Sourcing Equipment (PSE). Both PoE switches and PoE injectors can act as PSE devices to provide power and data to Powered Devices (PDs). PoE Ethernet switches, commonly referred to as endspans (or endpoints according to IEEE 802.3af), typically utilize PoE mode A. On the other hand, PoE injectors (also known as midspan devices) function as intermediary devices between non-PoE switches and PDs, supporting only PoE mode B.

PoE Switch Power Supply Distance

PoE can transmit power up to 100 meters from the PSE to the PDs. However, the total length of Ethernet cabling is limited to 100 meters due to signal attenuation specified by Ethernet cabling standards. In the case of PoE switches, the maximum distance for power transmission is typically 100 meters. The actual PoE transmission distance may vary depending on the network cables used. For Cat5e, Cat6, Cat6a, and Cat7 cables, the maximum transmission distance is 100 meters. However, Cat8 cables, despite supporting 25/40 Base-T transmission speeds, have a reduced maximum transmission distance of only 30 meters.

PoE Switch Supply Voltages and Types

According to the IEEE 802.3 standard, PoE switches are categorized into four types, each associated with a specific supply voltage. The table below provides a breakdown of the supply voltage for each PoE switch type.

PoEPoE+PoE++
IEEE StandardIEEE 802.3afIEEE 802.3atIEEE 802.3bt
PoE TypeType 1Type 2Type 3Type 4
Switch Port Power
Max. Power Per Port15.4W30W60W100W
Port Voltage Range44-57V50-57V50-57V52-57V
Powered Device Power
Max Power to Device12.95W25.5W51W71W
Voltage Range to Device37-57V42.5-57V42.5-57V41.1-57V

Conclusion

Power over Ethernet (PoE) technology plays a crucial role in the ongoing digital transformation. Understanding the power supply aspects of PoE switches is essential for ensuring the protection of both PoE and non-PoE devices. Familiarizing oneself with common issues and solutions related to PoE switch connections is also beneficial in preventing unnecessary time and financial resources from being wasted during the deployment of PoE networks. By staying informed and prepared, organizations can fully leverage the advantages of PoE technology and optimize their network infrastructure.

`, published_at:``, sku:[] } allObj.sku.push("POE-SW708GM") allObj.sku.push("POE-Switch0504GD") allObj.sku.push("POE-Switch1008-Solar") allObj.sku.push("POE-SW805G5U-Solar") allObj.sku.push("POE-SWR608G") allObj.sku.push("POE-SWR308G25") allObj.sku.push("POE-SWR308G") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Active vs. Passive PoE Switch: How to Choose?`, url:`/en-us/blogs/blog/active-vs-passive-poe-switch-how-to-choose`, image:`//eu.linovision.com/cdn/shop/articles/Active_vs._Passive_PoE_Switch.webp?v=1709877309`, content:`

PoE switch is designed to offer both network connection and power supply to one PoE powered device (PD) through one Ethernet cable. And as the demand for deploying PD devices such as IP phones, IP cameras and access points increases,PoE switchis commonly used in today's enterprise and campus networks for it helps to reduce deployment complexity and cost. Now we can see there are both active PoE switch and passive PoE switch sold in the market. What exactly are they? Should we use active PoE or passive PoE switches for our network?

What Are Active PoE and Active PoE Switch?

Active PoE, short for active Power over Ethernet, is also known as standard PoE which refers to any type of PoE that negotiates the proper voltage between the power supply equipment (PSE) and the PD device. An active PoE switch is a device that complies with standard PoE, so it is also named a standard PoE switch. This type of switch is rated to be IEEE 802.3af, IEEE 802.3at or IEEE 802.3bt compliant. Thus it can be further divided into PoE,PoE+andPoE++switches (PoE vs PoE+ vs PoE++ Switch: How to Choose?). Before powering up, the active PoE switch will test and check to ensure the electrical power is compatible between the switch and the remote device. If it isn’t, the active PoE switch will not deliver power, preventing any potential damage to the non-PoE device.

Active vs. Passive PoE Switch: How to Choose? (81)

What Are Passive PoE and Passive PoE Switch?

Passive PoE, also known as the passive Power over Ethernet, is a non-standard PoE. It can also deliver power over the Ethernet lines, but without the negotiation or communication process. The passive PoE switch does not adhere to any IEEE standard. The power is "always-on" when using a passive PoE switch in networks, which means it always sends electric current out over theEthernet cableat a certain voltage regardless of whether the terminal device supports PoE or not. So using passive PoE switch may burn out the terminal devices if they're not prepared for electrified Ethernet cables.

Active vs. Passive PoE Switch: How to Choose? (82)

Active vs. Passive PoE Switch: What Are Their Differences?

As mentioned above, active PoE switches and passive PoE switches can both provide PoE connections but in very different ways. Besides that, they also differ in PoE power supply pinout, Ethernet support, cost, etc.

Active vs. Passive PoE Switch: PoE Power Supply Pinout

As we know, there are three methods for PoE switches to supply power: PoE Mode A, PoE Mode B and 4-pair PoE. In PoE Mode A, power is delivered simultaneously with data over pins 1, 2, 3, and 6. In PoE Mode B, power is injected onto pins 4, 5, 7, and 8. And 4-pair PoE delivers power over all 8 pins simultaneously. Active PoE switch can support all PoE Mode A, PoE Mode B and 4-pair PoE, while passive PoE switch can only support PoE Mode B.

10/100BASE-T Network1000BASE-T Network
Pins at SwitchPoE Mode A (Data & Mixed DC)PoE Mode B (DC on Spares)4-pair PoEPoE Mode A (Bi-Data & DC)PoE Mode B (Bi-Data & DC)4-pair PoE
Pin 1Rx+ & DC+Rx+Rx+ & DC+TxRx A+ & DC+TxRx A+TxRx A+ & DC+
Pin 2Rx- & DC+Rx-Rx- & DC+TxRx A- & DC+TxRx A+TxRx A+ & DC+
Pin 3Tx+ & DC-Tx+Tx+ & DC-TxRx B+ & DC-TxRx B+TxRx B+ & DC-
Pin 4UnusedDC+DC+TxRx C+TxRx C+ & DC+TxRx C+ & DC+
Pin 5UnusedDC+DC+TxRx C-TxRx C- & DC+TxRx C- & DC+
Pin 6Tx- & DC-Tx-Tx- & DC-TxRx B- & DC-TxRx B-TxRx B- & DC-
Pin 7UnusedDC-DC-TxRx D+TxRx D+ & DC-TxRx D+ & DC-
Pin 8UnusedDC-DC-TxRx D-TxRx D- & DC-TxRx D- & DC-

Active vs. Passive PoE Switch: Ethernet Support

Active PoE switches can support 10/100/1000Mbps Ethernet up to 100m over Cat5/5e/6 cable. Passive PoE switches, however, commonly support 10/100 Mbps Ethernet up to 100m. Thus active PoE switches can be applied in both traditional 10/100BASE-T and modern 1000BASE-T PoE networks. While passive PoE switches are usually used in the past 10BASE-T and 100BASE-T PoE networks.

Active vs. Passive PoE Switch: Cost

All active PoE switches are equipped with the built-in PoE power controller which performs the function of PD device detection and classification. While the passive PoE switch has no such component and function. Therefore it is reasonable to see the price of the active PoE switch is higher than that of the passive PoE switch.

To sum up, active and passive PoE switches mainly differ from each other in the following aspects:

Active PoE SwitchPassive PoE Switch
StandardIEEE 802.3af/at/btN/A
Power InjectionAfter NegotiationImmediately
Power Supply ModePoE Mode A/PoE Mode B/4-Pair PoEPoE Mode B
Ethernet Support10/100/1000BASE-T10/100BASE-T
Max. Distance100m100m
SafetyHighLow
CostMediumLow

Active vs. Passive PoE Switch: Which to Choose?

From the above content, we can say that for safety concerns, active PoE switches should always be our top choice for powering up remote IP phones, IP cameras, wireless access points, and other PD devices. However, you may also consider passive PoE switches if there is a tight budget. But remember that the passive PoE switch has no power detection function. So it is important to make sure the passive PoE switch you buy matches the power specifications exactly to the PD device you are trying to power on. Otherwise, you can easily burn up your PD device. In addition, you should never connect computers and other non-PoE devices to the passive PoE switch.

`, published_at:``, sku:[] } allObj.sku.push("POE-Splitter1224") allObj.sku.push("POE-Switch0504GD") allObj.sku.push("POE-SW708GM") allObj.sku.push("POE-SW508G") allObj.sku.push("POE-SW805G5U-Solar") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Single Port BT90W PoE Injector with 2.5G Super High Speed Transmission`, url:`/en-us/blogs/blog/single-port-bt90w-poe-injector-with-2-5g-super-high-speed-transmission`, image:`//eu.linovision.com/cdn/shop/articles/POE-IN9001_Blog.png?v=1709794640`, content:`

POE-IN9001, it isLINOVISION Single Port BT90W PoE Injector, 1000Mbps/2.5G Super High Speed Transmission, Compatible to Standard IEEE802.3af/at/bt PD, POE++ Injector for High Power Consumption PTZ Camera, VoIP Phone.

Active vs. Passive PoE Switch: How to Choose? (83)

Outstanding Features

  • BT90W POE INJECTOR -Convert single ethernet port to IEEE802.3af/at/bt 90W PoE++ port, supply sufficient PoE power for IP camera, PTZ camera, POE speaker, Wireless AP, etc.
  • 2.5G HIGH SPEED -Support 10M/100M/100M/2.5G super high transmission speed.
  • STANDARD PoE -Unlike some software emulated PoE, this PoE injector adopts hardware IEEE802.3af/at/bt PoE chipset and compatible to both Mode A and Mode B PD device. It follows PD Detection -> Classification Type -> Power On procedures to prevent standard PD device from damaging.
  • SPLICING DESIGN -PoE injectors can be combined whit each other by the bayonet. which makes it easier to manage when there are many PoE injectors.
  • PLUG-N-PLAY -Simply plug in the Ethernet cables and power cord, no configuration is needed.

Application

Provide safe and reliable power to wireless access points, PTZ IP cameras, and VoIP Phone, etc. (Noted: Not compatible with passive 24V devices, such as Ubiquiti access points.)

`, published_at:``, sku:[] } allObj.sku.push("POE-IN9001") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`What are LoRa and LoRaWAN and Why is LoRaWAN so awesome`, url:`/en-us/blogs/blog/what-are-lora-and-lorawan-and-why-is-lorawan-so-awesome`, image:`//eu.linovision.com/cdn/shop/articles/lorawan_blog_banner_720x_43746691-b9ed-4cdf-98d8-91cc5c3a36bf.webp?v=1709275787`, content:`

What are LoRa and LoRaWAN?

Welcome to The Things Fundamentals on LoRaWAN. In this article, you’ll learn why LoRaWAN is so awesome, hear about some great LoRaWAN use cases and learn the difference between LoRa and LoRaWAN.

LoRa

LoRa is a wireless modulation technique derived fromChirp Spread Spectrum (CSS)technology. It encodes information on radio waves using chirp pulses - similar to the way dolphins and bats communicate! LoRa modulated transmission is robust against disturbances and can be received across great distances.

Don’t be alarmed about the complex terms;LoRa modulationandChirp Spread Spectrum technologyare simple to understand in practice. In case you are curious, in this video,Richard Wennerexplains howChirp Spread Spectrum technologyworks:

LoRa is ideal for applications that transmit small chunks of data with low bit rates. Data can be transmitted at a longer range compared to technologies like WiFi, Bluetooth or ZigBee. These features make LoRa well suited for sensors and actuators that operate in low power mode.

LoRa can be operated on the license freesub-gigahertzbands, for example, 915 MHz, 868 MHz, and 433 MHz. It also can be operated on2.4 GHzto achieve higher data rates compared to sub-gigahertz bands, at the cost of range. These frequencies fall into ISM bands that are reserved internationally for industrial, scientific, and medical purposes.

What Is The LoRa Radio?

LoRa uses radio frequency (RF) signals to communicate and operate in the unlicensed ISM spectrum. This means that anyone can openly use this band without paying or getting a license so long as regulations are followed as determined by the FCC in the US. Although LoRa operates in the ISM (Industrial, Science, Medical) band, the ranges within ISM fields vary greatly depending on geographical region.

LoRa provides the necessary ranges and data rate within the following geographical frequencies for specified wireless sensors: Europe: 868Mhz and 433 Mhz, US: 915Mhz and AUS: 915-928 Mhz. These differences prevent US devices and gateways from being compatible with European or Australian devices. There are several techniques LoRa uses to improve data reliability, however, the two most important ones are Spread Spectrum and Adaptive Data Rate (ADR).


Spread Spectrum:
Originally developed for military applications increasing resistance to interference from noise and jamming. It does this by taking raw information and is spread across a larger frequency.


ADR:
This allows augmentation of the data rate and transmit power to adjust the functioning of signal quality and distance to the gateway. Aslow transmission will have a higher spreading factorthat achieves longer and more reliable ranges.

LoRaWAN

LoRaWAN is a Media Access Control (MAC) layer protocol built on top of LoRa modulation. It is a software layer which defines how devices use the LoRa hardware, for example when they transmit, and the format of messages.

The LoRaWAN protocol is developed and maintained by theLoRa Alliance. The first LoRaWAN specification was released in January 2015. The table below shows the version history of the LoRaWAN specifications. At the time of this writing the latest specifications are 1.0.4 (in 1.0 series) and 1.1 (1.1 series).

Version|Release date
1.0 | January 2015
1.0.1 | February 2016
1.0.2 | July 2016
1.1 | October 2017
1.0.3 | July 2018
1.0.4 | October 2020

Bandwidth vs. Range

LoRaWAN is suitable for transmitting small size payloads (like sensor data) over long distances. LoRa modulation provides a significantly greater communication range with low bandwidths than other competing wireless data transmission technologies. The following figure shows some access technologies that can be used for wireless data transmission and their expected transmission ranges vs. bandwidth.

Active vs. Passive PoE Switch: How to Choose? (84)

Why is LoRaWAN so awesome?

  • Ultra low power- LoRaWAN end devices are optimized to operate in low power mode and can last up to 10 years on a single coin cell battery.
  • Long range- LoRaWAN gateways can transmit and receive signals over a distance of over 10 kilometers in rural areas and up to 3 kilometers in dense urban areas.
  • Deep indoor penetration- LoRaWAN networks can provide deep indoor coverage, and easily cover multi floor buildings.
  • License free spectrum- You don’t have to pay expensive frequency spectrum license fees to deploy a LoRaWAN network.
  • Geolocation- A LoRaWAN network can determine the location of end devices using triangulation without the need for GPS. A LoRa end device can be located if at least three gateways pick up its signal.
  • High capacity- LoRaWAN Network Servers handle millions of messages from thousands of gateways.
  • Public and private deployments- It is easy to deploy public and private LoRaWAN networks using the same hardware (gateways, end devices, antennas) and software (UDP packet forwarders, Basic Station software, LoRaWAN stacks for end devices).
  • End-to-end security- LoRaWAN ensures secure communication between the end device and the application server using AES-128 encryption.
  • Firmware updates over the air- You can remotely update firmware (applications and the LoRaWAN stack) for a single end device or group of end devices.
  • Roaming- LoRaWAN end devices can perform seamless handovers from one network to another.
  • Low cost- Minimal infrastructure, low-cost end nodes and open source software.
  • Certification program- The LoRa Alliance certification program certifies end devices and provides end-users with confidence that the devices are reliable and compliant with the LoRaWAN specification.
  • Ecosystem- LoRaWAN has a very large ecosystem of device makers, gateway makers, antenna makers, network service providers, and application developers.

LoRaWAN use cases

Here are a few great LoRaWAN use cases provided by IoTNVR to give you some insight into how LoRaWAN can be applied:

  • Vaccine cold chain monitoring- LoRaWAN sensors are used to ensure vaccines are kept at appropriate temperatures in transit.
  • Animal conservation- Tracking sensors manage endangered species such as Black Rhinos and Amur Leopards.
  • Dementia patients- Wristband sensors provide fall detection and medication tracking.
  • Smart farms- Real time insights into crop soil moisture and optimized irrigation schedule reduce water use up to 30%.
  • Water conservation- Identification and faster repair of leaks in a city’s water network.
  • Food safety- Temperature monitoring ensures food quality maintenance.
  • Smart waste bins- Waste bin level alerts sent to staff optimize the pickup schedule.
  • Smart bikes- Bike trackers track bikes in remote areas and dense buildings.
  • Airport tracking- GPS-free tracking monitors vehicles, personnel, and luggage.
  • Efficient workspaces- Room occupancy, temperature, energy usage and parking availability monitoring.
  • Cattle health- Sensors monitor cattle health, detect diseases and forecast calves delivery time.
  • LoRa in space- Satellites to provide LoRaWAN-based coverage worldwide.

How Does LoRaWAN Work?

For sake of simplicity LoRaWAN networks can be primarily illustrated by the following diagram:

Devices<–>LoRa radio <–>Gateway<–>Network Server <–>End Application

Looks linear, simple, and yet confusing and mysterious. How does this work and what does it mean? Upstream messages (data sent from the device) are encrypted and sent over LoRa radio through transmissions. The message is received by one or more gateways who then transfer the encrypted data over a network (typically IP cellular/Ethernet) to a network server. The network server is the software that authenticates the device and decrypts the LoRaWAN payload. The server then delivers the data packet to the appropriate end application.

This process can also happen in the inverse, better explained, messages can be sent downstream which allows the application to reconfigure the end devices. With this being said, LoRa was designed to use low energy, which means some devices are limited when listening for incoming data transmission. This factor is device dependent as described in the next section.

What Are LoRaWAN Wireless Sensor Devices?

A LoRaWAN sensor device is anything that sends or receives informational data and is commonly carried out by devices likewireless sensors, detectors, and actuators. These devices come in 3 classes and are essentially a step up from the previous class.

For instance, a Class A device is only able to receive a message during a small window after it has sent an uplink message and then returns to a low power sleep state where it cannot receive new messages.

Class B is similar to A, but instead is able to listen for incoming messages following predetermined intervals.

Unlike Classes A and B, Class C is able to continuously listen for new incoming messages without entering sleep mode, however, this feature comes at the expense of higher energy usage and for that reason, many Class C devices are not battery operated.

The LoRaWAN standard uses two different message types: MAC messaging and data messaging. MAC messages are used as commands to control the radio and networking message. Data messages are the actual payload that is sent/received and is application or device specific. Since these sensors have limited messaging capabilities, MAC commands/messages are able to ride alongside data messages similar to piggybacking and numerous MAC messages can be released at one time.

What Is A LoRa Gateway?

A gateway can be thought of as an access point or modem. It’s receiving all LoRa radio messages sent by devices within range. If the gateway has a network server built in it will process the data payload locally, and if the network server is located in the cloud the gateway will simply relay the encrypted packet to the server.

Active vs. Passive PoE Switch: How to Choose? (85)

What Does The Network Server Do?

Once a LoRa gateway has received a transmitted data packet (message), it will then continue upstream to a network server, considered the most intelligent or sophisticated area of the LoRaWAN network. Network servers are responsible for carrying out a list of various tasks that include:

  • Decrypt LoRa payload data
  • Provision devices to speak to the network
  • Grouping incoming messages from allLoRaWAN gatewayswithin its network and sensor range.
  • Direct/advance incoming data to the appropriate end application.
  • Regulate LoRa radio settings to the gateways.
  • When there are multiple gateways, the best gateway within range is selected for downlink messages for that particular device.
  • Data buffering: stores downlink data (messages) until a class A or B LoRa device is able to receive messages specified during configuration.
  • Filter/Eliminate duplicate messages/data sent from a single device appearing across multiple gateways where devices are unknown by receiving gateways. Since there is no distinction, multiple gateways can receive the same data.
  • Assess/monitor gateways and devices.

The network server in most instances will direct messages from a particular ID and port to a specified or predefined application. This typically happens by sending it to a web service (HTTP(S)) or by placing it in an MQTT queue to be sent to the right place at a determined interval.

What Does End Application Mean?

The final step of data transmission in a LoRa network is the data sent to the actual end application. This is where manufacturers and developers will create code to parse messages received by devices relevant to the application being used. This is where the raw data is assembled into digestible information for the end user’s interpretation.

We’ve simplified the flow diagram so you can visually compare how these areas work with each other.

Active vs. Passive PoE Switch: How to Choose? (86)

Lastly, security comes to mind. Since networks themselves do not need to be able to interpret the data received unless it pertains to network infrastructure or is relevant to the network itself. A network session key (NwkSKey) encrypts the messages and payloads in the event a MAC command is sent. This key signs the message allowing networks to verify the sender’s identity.

A second key is known as the application session key (AppSKey) and is responsible for encrypting the payload (actual data) and does not need to be recognized or known by the network server in order to forward the message where it needs to be. The application server will then decrypt the message to extract the information by using the same key.

There are two secure ways to join a LoRa network. They are referred to as Activation by Personalization (ABP) and Over the Air Activation (OTAA). This determines how LoRaWAN devices connect to networks, but does not involve upstream-downstream communication flow as we’ve detailed above.

`, published_at:``, sku:[] } allObj.sku.push("IOT-G65") allObj.sku.push("IOT-C511") allObj.sku.push("IOT-S500CO2") allObj.sku.push("IOT-S500TH") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`8-in-1 Environment Monitor with Sensors of Ultrasonic Wind, PM2.5/10 and Noise`, url:`/en-us/blogs/blog/8-in-1-environment-monitor-with-sensors-of-ultrasonic-wind-pm2-5-10-and-noise`, image:`//eu.linovision.com/cdn/shop/articles/IOT-S300WS8-Banner.png?v=1709192358`, content:`

IOT-S300WS8, it is LINOVISION 8-in-1 Professional Environment Monitor with Sensors of Ultrasonic Wind, PM2.5, PM10 and Noise, Remote Management via RS485 ModBus, Accurate Weather Station for Pollution Detection.

Active vs. Passive PoE Switch: How to Choose? (87)

Outstanding Features:

  • 8-in-1 Environment Monitor-Integrated sensors of temperature, humidity, pressure, wind speed, wind direction, noise, PM2.5, PM10, ideal for pollution detection, city environmental monitoring.
  • Pro-Grade Accuracy-For scientific research or commercial weather station integration.
  • Ultrasonic Sensor -Provides highly precise measurement and much more reliable without using any movable parts.
  • RS485 Modbus- Support remotely management when bundling with Modbus gateway or 4G Cellular DTU.
  • Industrial-Level Design- IP66 outdoor rated, and working in cold weather with built-in heater (-40 ℃ ~ + 85℃)
  • Accessories- Comes with pole mount bracket. Free subscription to Linovision AIoT RemoteMonit Cloud.

Applications:

Active vs. Passive PoE Switch: How to Choose? (88)

`, published_at:``, sku:[] } allObj.sku.push("IOT-S300WS8") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`How to Achieve Modbus RTU to/over TCP between Linovision LoRaWAN Gateways and Controllers`, url:`/en-us/blogs/blog/how-to-achieve-modbus-rtu-to-over-tcp-between-linovision-lorawan-gateways-and-controllers`, image:`//eu.linovision.com/cdn/shop/articles/lorawan_to_Modbus_RTU.webp?v=1708574890`, content:`

Modbus RTU bridge LoRaWAN is a feature which can set up Modbus-LoRaWAN data transmission between Linovision controllers and Modbus TCP/TCP clients viaLinovisionLoRaWAN gateways. The basic procedures are as follows:

  1. Send Modbus TCP/RTU reading or writing commands from a TCP client or Modbus TCP client
  2. Linovisiongateways receive commands and translate them to Modbus RTU commands, then forward toLinovisioncontrollers via LoRaWAN
  3. Linovisioncontrollers receive and response the commands and return the results
  4. Linovisiongateways receive the results and send to TCP client directly or translate to Modbus TCP results and send to Modbus TCP client

Active vs. Passive PoE Switch: How to Choose? (89)

Requirements
  • Linovision Controllers: IOT-C501
  • IOT-G6x LoRaWAN Gateways
  • Toolbox Software
  • NetAssit (TCP Client simulate tool or Modbus Doctor (Modbus TCP client simulate tool)
  • Modbus Slave or other Modbus RTU devices (meters, sensors, etc.)

1.Linovision Controller Configuration

2.LinovisionGateway Configuration

3. TCP Client/Modbus TCP Configuration

3.1 TCP Client Configuration

3.2 Modbus TCP Configuration

4. Test

4.1 Transmission between Controllers and RS485 Devices

4.2 Send Query from Gateway

4.3 Send Query from TCP Client

4.4 Read to Modbus TCP

4.5 Write from Modbus TCP

1.LinovisionController Configuration

Before powering onLinovisioncontrollers, please connect your Modbus RTU devices to RS485 port of controllers.

WithLinovisioncontrollers connected to PC with USB cable, open Toolbox. Select the USB port and type login password. The default password is 123456.

Active vs. Passive PoE Switch: How to Choose? (90)

Navigate toGeneral > RS485page, enableModbus RS485 bridge LoRaWANand configure the port which is specified for bridging. In this example we use 200 as Modbus RS485 bridge LoRaWAN port.

Active vs. Passive PoE Switch: How to Choose? (91)

Navigate toLoRaWANpage and select the working mode asClass C. You could also find essential attributes of the controllers and you would need them to register it ontoLinovisiongateways.

Active vs. Passive PoE Switch: How to Choose? (92)

2.LinovisionGatewayConfiguration

ConnectLinovisioncontrollers to gateway following articleHow to Connect LoRaWAN Node/Sensor toLinovision Gateway. When registering devices inNetwork Server->Devicepage, select Modbus RTU Data transmission mode as required and type necessary information. If you connect TCP client to gateway and send Modbus RTU commands, selectModbus RTU over TCP; if you connect Modbus TCP client to gateway and send Modbus TCP commands, selectModbus RTU to TCP.

NOTE:Please type theFportas Modbus RS485 bridge LoRaWAN port (In this example Fport is 200).TCP Portis used for allowing TCP client or Modbus TCP master connection.

Active vs. Passive PoE Switch: How to Choose? (93)

3. TCP Client/Modbus TCP Configuration

3.1 TCP Client Configuration

Open NetAssist on PC, type in IP address of gateway as IP address of TCP server,ServerPortshould be the same as the TCP Port in gateway. ClickConnectto connect the client to gateway.

Active vs. Passive PoE Switch: How to Choose? (94)

3.2 Modbus TCP Configuration

Open Modbus Doctor on PC, type in IP address of gateway as IP address of Modbus TCP server,NumPortshould be the same as the TCP Port in gateway. ClickCLOSE, chooseCONNECTION.

Active vs. Passive PoE Switch: How to Choose? (95)

4. Test

Active vs. Passive PoE Switch: How to Choose? (96)

Modbus over/to TCP share the same topology, except that the protocol in TCP client side is different. Testing Modbus over TCP is using original Modbus and TCP/IP. While testing Modbus to TCP we introduce Modbus TCP/IP (also Modbus-TCP) which is simply the Modbus RTU protocol with a TCP interface that runs on Ethernet.

4.1 Transmission between Controllers and RS485 Devices

Connect controller RS485 port to PC and stimulate serial data with Modbus Slave.

Active vs. Passive PoE Switch: How to Choose? (97)

In Toolbox, configure a Modbus channel to poll data from Modbus Slave tool. If you can read data, the communication is on.

Active vs. Passive PoE Switch: How to Choose? (98)

4.2 Send Query from Gateway

Use the following Modbus example to test the communication between gateway and controller.

Query frame:

Slave IDFunctionAddressLengthParity
0x010x030x00 0x000x00 0x020xC4 0x0B

Response frame:

Slave IDFunctionLengthDataParity
0x010x030x040x00 0x01 0x00 0x020x2A 0x32

Go toNetwork Server > Packetspage, put in controllerDevice EUIandPort200, select type ashex, then clickSendto send Modbus command to controller.

Active vs. Passive PoE Switch: How to Choose? (99)

A: gateway sends Modbus downlink successfully

B: Reply from controllers

C: ACK package from controllers

The details of reply packet is shown below:

Active vs. Passive PoE Switch: How to Choose? (100)

4.3 Send Query from TCP Client

Send Modbus RTU format command 010300000002c40b to read first two digit of data, gateway (TCP server) will respond the Modbus reply 010304000100022A32.

Active vs. Passive PoE Switch: How to Choose? (101)

In web GUI of gateway, you can check the details that sending the message from TCP client and receiving the replies from controllers.

Active vs. Passive PoE Switch: How to Choose? (102)

Click the exclamation mark to see packets details, payload in hex matches what TCP client receives and is correctly “1,2”.

Active vs. Passive PoE Switch: How to Choose? (103)

4.4 Read to Modbus TCP

EnableSPY MODEand clickCONNECTION, see it’s printed in status:

Status: Connecting to 192.168.23.226:9099...

Status: Connected

As Modbus Slave has 10 addresses for default so we set Length as 10 too, clickREADING. You can see the query frame in darker blue and response frame in lighter one in the traffic communication block on the right.

Active vs. Passive PoE Switch: How to Choose? (104)

Here is a data table of Modbus TCP communication protocol.

Query FrameResponse Frame
ByteContentByteContent
0-4Start0-4Start
5Whole Length5Whole Length
6Slave ID6Slave ID
7Function Code7Function Code
8, 9Start Address8Data Length
9, 10Data
10, 11Address Length11, 12Data
...Data

According to the table we can tell the data read from Modbus RTU is 1,2 which is correct. In web GUI of gateway, you can check the details thatsendingthe message from TCP clientand receiving the replies from controllers.

4.5 Write from Modbus TCP

Modbus Doctor supports writing to Modbus RTU. You can input random number inValueof each Register, clickWRITING. You can read the communication traffic according to the table above.

Active vs. Passive PoE Switch: How to Choose? (105)

In Modbus Slave, you can see the value has changed correspondingly.

Active vs. Passive PoE Switch: How to Choose? (106)

`, published_at:``, sku:[] } allObj.sku.push("IOT-C502") allObj.sku.push("IOT-C501") allObj.sku.push("IOT-G65") allObj.sku.push("IOT-G67") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`How to Connect LoRaWAN Nodes to Linovision Gateway`, url:`/en-us/blogs/blog/how-to-connect-lorawan-nodes-to-linovision-gateway`, image:`//eu.linovision.com/cdn/shop/articles/Connect_LoRaWAN_Nodes.webp?v=1708497115`, content:`

LinovisionIoT gateway has built-in network server. When network server is enable, users can add LoRAWAN nodes/sensors to gateway and check the data directly. This article will guide you how to connect LoRaWAN nodes/sensors toLinovisionGateway.

  • LinovisionLoRaWAN Gateway IOT-G6x or G8x.
  • LoRaWAN Node/Sensor (take Linovision IOT-S500TH as example).

Make sure sensor and gateway support the same LoRa frequency such as US915.

1. Before configuration, make sure the LoRaWAN node/sensor is not activated in other network servers. Take IOT-S500-TH as example, runLinovisionToolboxAppon smart phonevia NFC or open Toolbox on PC via USB Type-C to makes sureJoinStatusof the sensor isDe-Activate.

Active vs. Passive PoE Switch: How to Choose? (107)

2. Go toPacket Forwarder -> Generalto enable localhost server.

Active vs. Passive PoE Switch: How to Choose? (108)

Active vs. Passive PoE Switch: How to Choose? (109)

ClickSave & Apply.

3. Go toNetworkServer->Generalto enable built-in Network Server.

Active vs. Passive PoE Switch: How to Choose? (110)

ClickSave&Apply.

4. Go toNetwork Server -> Applicationsto add application.

Name & Description:user-defined.

Active vs. Passive PoE Switch: How to Choose? (111)

5. Go toNetwork Server -> Profilesto add a profile.

Name:user-defined.

Join Type & Class Type:same as the ones on the sensor.

Active vs. Passive PoE Switch: How to Choose? (112)

Active vs. Passive PoE Switch: How to Choose? (113)

6. Go toNetwork Server -> Deviceto add sensors.

Device Name & Description:user-defined.

Device EUI:the Device EUI of the sensor. ForLinovisionsensors, you can find it onthe label orToolBox.

Device-Profile & Applications:the ones you added in the above steps.

Application Key(AppKey):the application key of the sensor. ForLinovisionsensors, it’s a general one (5572404c696e6b4c6f52613230313823). You can also find it on user guide.

Active vs. Passive PoE Switch: How to Choose? (114)

If Join Type is ABP, please fill in below parameters:

DeviceAddress:the 5th to 12th digits of SNof sensor.

NetworkSessionKey(NwkSKey)/Appcation Session Key (AppSKey):forLinovisionsensors, it’s a general one (5572404C696E6B4C6F52613230313823). You can also find it on user guide.

Active vs. Passive PoE Switch: How to Choose? (115)

ClickSave & Apply.

Active vs. Passive PoE Switch: How to Choose? (116)

7. After the sensor joins the gateway successfully, you can see it’sActivated.

Active vs. Passive PoE Switch: How to Choose? (117)

Go toNetworkServer-> PacketsofLinovisionGateway to check uplink data that sensor reports.

Active vs. Passive PoE Switch: How to Choose? (118)

Active vs. Passive PoE Switch: How to Choose? (119)

You can also seeJoin StatusisActivatefrom corresponding software.

Active vs. Passive PoE Switch: How to Choose? (120)

--END--

`, published_at:``, sku:[] } allObj.sku.push("IOT-G65") allObj.sku.push("IOT-G67") allObj.sku.push("IOT-S500TH") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`RS485 Modbus 7-in-1 Ultrasonic Weather Station`, url:`/en-us/blogs/blog/rs485-modbus-7-in-1-ultrasonic-weather-station`, image:`//eu.linovision.com/cdn/shop/articles/IOT-S300WS7-Banner_2.png?v=1708157022`, content:`

IOT-S300WS7 is an ultimate all-in-one RS485 Modbus weather monitoring system for various and continuous atmospheric conditions including air temperature, relative humidity, barometric pressure, light intensity, rainfall(optical), wind speed, and wind direction (ultrasonic). It boasts high resolution and accuracy with rugged and aesthetic housing.

Active vs. Passive PoE Switch: How to Choose? (121)

Outstanding Features

  • All-in-One Weather Station- This weather monitoring system is designed to monitor various and continuous atmospheric conditions, including air temperature, relative humidity, barometric pressure, light intensity, precipitation intensity, wind speed, and wind direction.
  • RS485 Compatibility- The output signal is RS485, the standard Modbus-RTU communication protocol, which supports changing the communication address and wave special rate and other functions. And RS485 support as far as 1200 meters communication. while supports secondary development and is widely used.
  • Ultrasonic Sensor- For precise measurement, the sensors to measure wind speed and wind direction use ultrasound instead of traditional mechanical 3-cup or vane anemometer.
  • Greater Stability- Radiation shields are equipped to ensure accurate ambient measurement.
  • Built-in Heater- Integrated heaters that can be switched on in extreme weather.
  • Embedded with the Electronic Compass- Magnetometer: enabling easy installation and you can choose to disable the electronic compass while orienting to the North manually.

Applications

  • Weather monitoring for agriculture, meteorology, forestry, ports, railways, schools, and buildings, etc.

`, published_at:``, sku:[] } allObj.sku.push("IOT-S300WS7") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`2.5G Cloud Managed PoE Switch with 10G SFP Uplink and 130W PoE Budget`, url:`/en-us/blogs/blog/2-5g-cloud-managed-poe-switch-with-10g-sfp-uplink-and-130w-poe-budget`, image:`//eu.linovision.com/cdn/shop/articles/POE-SWR308G25.png?v=1707107181`, content:`

Active vs. Passive PoE Switch: How to Choose? (122)

Recently we launched our latest product POE-SWR308G25. It is2.5G Cloud Managed PoE Switch with 10G SFP Uplink and 130W PoE Budget.

Outstanding Features:

  • CLOUD MANAGED PoE SWITCH -Remote monitor and control PoE ports from central Cloud, such as turn On/Off PoE, speed / priority / PoE budget settings; Includes one year free subscription; Also supports VLAN, QoS in local WEB GUI
  • FULL 2.5G PoE SWITCH-Provide 8 x 2500Mbps PoE ports, transmit 2.5x faster speed internet over regular Cat5E/Cat6 network cables; Auto adaptive 10/100/1000M/2.5G

  • 10G SFP UPLINK- Support 10Gbps SFP module, also compatible to 1G or 2.5G SFP modules (SFP module is not included)

  • 130W TOTAL POWER- Each port up to 30W (IEEE802.3af/at), total 130W PoE power; Package includes 150W Power Adapter

Application:

2.5x higher speed internet for online gaming, 4K Video, WiFi 6 AP integration, office network, etc.

`, published_at:``, sku:[] } allObj.sku.push("POE-SWR308G25") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`What is a PoE Injector and How to Use It?`, url:`/en-us/blogs/blog/what-is-a-poe-injector-and-how-to-use-it`, image:`//eu.linovision.com/cdn/shop/articles/poe_injector_540x_dcac644d-8558-4115-92c4-25465e38f4c2.webp?v=1706857781`, content:`

Power over Ethernet (PoE) technology allows the transmission of power and data over Ethernet cabling, using devices such as PoE switches, PoE injectors, and PoE splitters. In situations where power outlets are not readily available, PoE injectors offer a convenient solution for installing low-power devices in hard-to-reach areas without significant infrastructure modifications or budget constraints. This article aims to provide a comprehensive understanding of PoE injectors, including their definition, usage in applications, and answers to frequently asked questions.

What is a PoE Injector?

A PoE injector, also known as a midspan or PoE adapter, enables non-PoE compatible switches to power PoE devices by delivering both power and data over a single Ethernet cable.

Benefits of PoE Injectors:

  • Easy installation: Simply connect the PoE injector to the PoE endpoint and an Ethernet switch to provide data and power.
  • Network expansion flexibility: PoE injectors add PoE capability to non-PoE Ethernet switches, extending the network connection distance and providing combined power and data over Ethernet cables for improved connectivity.
  • Cost-effective solution: By utilizing existing Ethernet equipment and cabling infrastructure, implementing a PoE injector solution minimizes additional costs.
How Does a PoE Injector Work?

Active vs. Passive PoE Switch: How to Choose? (123)

When Ethernet switches or other devices lack PoE functionality but need to support Powered Devices (PDs) like PoE IP cameras, PoE wireless access points (WAPs), or PoE lighting, a PoE injector can supply power and data to these PDs over distances of up to 100 meters. Typically, a PoE injector converts alternating current (AC) into direct current (DC) to power low-voltage PoE devices.

Types of PoE Injectors:

1.Active vs. Passive PoE Injector:

Active vs. Passive PoE Switch: How to Choose? (124)

A PoE injector following the IEEE 802.3af, IEEE 802.3at, or IEEE 802.3bt standards is known as an active PoE injector. These injectors require a handshake between the power sending and receiving PoE devices. If the receiving device does not provide the proper acknowledgment, the injector will not supply power, ensuring the safety of PoE devices. Active PoE injectors generally operate at a voltage of 44 to 57 volts DC.

In contrast, a passive PoE injector does not conform to the IEEE standards mentioned above. Passive PoE devices usually operate at voltages ranging from 18 to 48 volts DC. Connecting the wrong voltage may cause permanent electrical damage to the device.

2.12V vs. 24V vs. 48V PoE Injector:

PoE injectors can be categorized based on the output power voltage they provide, such as 12V, 24V, or 48V. When selecting a PoE injector, it is crucial to consider the voltage requirements of the powered PoE devices.

Additionally, PoE injectors can also vary based on port numbers, such as single-port PoE injectors, 2-port PoE injectors, and so on.

How to Use a PoE Injector?

PoE injectors excel at providing data and power to standard-based PoE, PoE+, and PoE++ compliant devices. In practical applications, a PoE injector acts as an intermediary between a non-PoE switch and PoE compliant devices, such as IP cameras or wireless access points, delivering power to them.

Active vs. Passive PoE Switch: How to Choose? (125)

Take an IP camera as an example. The following steps illustrate the power supply process:

  1. Test all equipment to ensure the IP camera, PoE injector, and camera management system are functioning properly. Configure video and network settings before mounting the IP camera.
  2. Connect the Ethernet cable from the PoE injector's Power or PoE port to the IP camera's PoE port.
  3. Mount the IP camera in a well-lit area to capture clear images.
  4. Connect another Ethernet cable between the injector's Ethernet or Data port and the Ethernet switch.
  5. Plug the injector's power cord into a local AC electrical outlet.

`, published_at:``, sku:[] } allObj.sku.push("POE-IN9001") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`What is Solar PoE Switch? Why do you need it in your solar system?`, url:`/en-us/blogs/blog/what-is-solar-poe-switch-why-do-you-need-it-in-your-solar-system`, image:`//eu.linovision.com/cdn/shop/articles/solar_power_system_switch.webp?v=1705906150`, content:`

Active vs. Passive PoE Switch: How to Choose? (126)


Have you ever thought about integrating solar controller and PoE Switch and create a single powerful device that allows for solar energy management, battery management, and network data and power management and even has a capability to integrate to larger network? Today, we're thrilled to introduce our latest product line that's set to redefine the way you install, setup, and manage your solar power system! This is Solar PoE Switch. Prior to the PoE Switch, there is Solar, exactly, literally, that stands for Solar Controller and PoE Switch, 2 in 1, industrial PoE Switch with built-in Solar Power Controller. Before we jump right into the details, let's take a quick look at what Solar Controller and PoE Switches are, and how they work in Solar Power systems!


A Solar Controller is a vital component in solar power systems, one of the key function here is that acting as a smart battery charger to safeguard your battery from potential damage. When connecting a battery directly to solar panels without a control device, the risk of overcharging and subsequent damage due to excessive voltage and current becomes a concern. it plays a important role at the entire solar power system.


And as we all know, PoE switches simplify solar system connectivity by combining power and data transmission over a single cable. They enhance efficiency by reducing the need for separate power sources for connected devices in a solar setup. PoE switches facilitate centralized control and monitoring, optimizing the management of solar-powered devices in a streamlined manner.


LINOVISION Solar PoE Switch, is industrial PoE Switch with built-in solar charge controller, working directly with PV solar panels and batteries to supply non-stop PoE power for devices, this is a single highly integrated device that allows for solar energy management, battery management, and remote network data and power management and even has a capability to integrate to larger network!

You might wonder,why did we adopt this design? what would benefit your solar power system?


Combining the solar power controller with a PoE switch into a single fully integrated device offers several pros, here's what we thought through:


Active vs. Passive PoE Switch: How to Choose? (127)

  1. Highly Integrated Design: Solar PoE Switch streamlines the installation and maintenance. Users only need to deal with one device instead of separately configuring and managing the solar controller and PoE switch, this integrated design allows for smoother energy flow within the system by optimizing the collaboration between components. From the cost perspective, purchasing a single unit is often a lower cost than buying two separate devices. Additionally, you will save on labor costs associated with installation and maintenance.

  1. Compact Size:The integrated design can decrease the number of devices and overall physical size, saving space. It can eliminate the need for separate cables, power supplies, making installation and maintenance much easier. This is particularly crucial in setups with limited space.

  1. Simplified Deployment and reduced system complexity:the integrated device reduces the complexity of configuring multiple components. Simplifying the device's installation process. It can decrease the technical complexity, especially for users with limited technical expertise.

Meanwhile, the reason we are excited about moving toward this line of products is that somepain points of the existing separate installation approach can be solved.

  1. Complexity of installation: Users would need to individually install solar power controllers and PoE switches, which could consume more time and require additional technical expertise. The configuration process may involve coordinating between different devices. Installing and managing two separate devices is more complex than installing a single integrated device.

  1. Space Occupancy: Independently deployed devices typically require more space, as they cannot be integrated into a relatively compact design. This can be a challenge in applications with space constraints.

  1. Technical Challenges: Configuring two separate devices may pose higher demands on technical personnel. Ensuring effective collaboration between the two systems may require additional technical expertise. Separate systems may require distinct maintenance and monitoring efforts for solar power and PoE networks. This can introduce additional complexity in troubleshooting issues and monitoring overall system performance.

  1. Lack of Integrated User Experience: Users might need to deal with independently sourced devices from different vendors, potentially involving different user interfaces and some incompatible issues.

`, published_at:``, sku:[] } allObj.sku.push("POE-SW805G5U-Solar") allObj.sku.push("POE-SW806GM-Solar") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Industrial 8 Ports Full Gigabit Cloud Managed PoE Switch`, url:`/en-us/blogs/blog/industrial-8-ports-full-gigabit-cloud-managed-poe-switch`, image:`//eu.linovision.com/cdn/shop/articles/Cloud_Management_POE_Switch.png?v=1705312442`, content:`

Active vs. Passive PoE Switch: How to Choose? (128)

POE-SWR308G is LINOVISION 8 Ports Cloud Managed PoE Switch with 2 SFP Uplink, Full Gigabit Ports, 120W Built-in Power Supply, IEEE802.3af/at, Q-PoE and P-PoE Without Interruption.CLOUD MANAGED PoE SWITCH

Remote monitor and control PoE ports from central Cloud, such as turn On/Off PoE, speed / priority / PoE budget settings; Includes one year free subscription; Also supports VLAN, QoS in local WEB GUI.

  • 8 PORTS FULL GIGABIT

Provides 8*10/100/1000Base-T Ethernet PoE ports and 2*1000Base-X SFP Uplinks.

  • 120W TOTAL PoE BUDGET

Each port up to 30W (IEEE802.3af/at), total 120W PoE power. POE Output Ports support POE Mode A. Power adapter is included and built-in the metal enclosure.

  • Q-PoE AND P-PoE

Supports Q-PoE (Quick PoE) technology, which enables PoE power supply immediately upon switch startup without waiting for switch system software control. Support P-PoE (Perpetual PoE) technology, which enables PoE power supply without interruption when switch is restarting and restores network quickly.

  • AI PD DETECTION

Automatically identify PD devices for power supply without damaging non-PoE devices.

`, published_at:``, sku:[] } allObj.sku.push("POE-SWR308G") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`POE Switches Ideal for RV/Truck/Bus/Vehicle/Rail Applications`, url:`/en-us/blogs/blog/poe-switches-ideal-for-truck-bus-vehicle-rail-applications`, image:`//eu.linovision.com/cdn/shop/articles/POE_Switches_For_Truck.webp?v=1705307081`, content:``, published_at:``, sku:[] } allObj.sku.push("POE-Switch0504GD") allObj.sku.push("POE-Switch1008-Solar") allObj.sku.push("POE-SW708GM-DC12V") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`What's is SFP? What is used for? What's the benefit of SFP to industrial applications?`, url:`/en-us/blogs/blog/whats-is-sfp-what-is-used-for-whats-the-benefit-of-sfp-to-industrial-applications`, image:`//eu.linovision.com/cdn/shop/articles/SFP_540x_fa4d5df6-5dd7-46a3-b542-bba65f3b19ca.webp?v=1704946243`, content:``, published_at:``, sku:[] } allObj.sku.push("SFP-GE-LX-20 (2 pack)") allObj.sku.push("Conv-SFP-GE (2 pack)") allObj.sku.push("SFP-TE-LX-10(2 pack)") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Linovision New Product - Industrial 8 Ports Full Gigabit PoE Switch with Remote PoE Ports Management`, url:`/en-us/blogs/blog/linovision-new-product-industrial-8-ports-full-gigabit-poe-switch-with-remote-poe-ports-management`, image:`//eu.linovision.com/cdn/shop/articles/POE-SWR608G.png?v=1704771082`, content:``, published_at:``, sku:[] } allObj.sku.push("POE-SWR608G") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Industrial 8 Ports Full Gigabit Managed POE Switch: A more comprehensive PoE switch with DC12~57V Input`, url:`/en-us/blogs/blog/industrial-8-ports-full-gigabit-managed-poe-switch-a-more-comprehensive-poe-switch-with-dc12-57v-input`, image:`//eu.linovision.com/cdn/shop/articles/L2_Managed_POE_Switch_with_DC12-57V_Input.webp?v=1703485145`, content:``, published_at:``, sku:[] } allObj.sku.push("POE-SW708GM-DC12V") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Revolutionizing RV Power Systems: LINOVISION's Wide Voltage PoE Switch`, url:`/en-us/blogs/blog/revolutionizing-rv-power-systems-linovisions-wide-voltage-poe-switch`, image:`//eu.linovision.com/cdn/shop/articles/RV_Power_Systems.webp?v=1702362930`, content:``, published_at:``, sku:[] } allObj.sku.push("POE-Switch0504GD") allObj.sku.push("POE-Switch1008-Solar") allObj.sku.push("POE-SW708GM-DC12V") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Revolutionizing Connectivity in RVs, Solar Power Systems, and Smart Offices with Wide Range Voltage PoE Switches`, url:`/en-us/blogs/blog/revolutionizing-connectivity-in-rvs-solar-power-systems-and-smart-offices-with-wide-range-voltage-poe-switches`, image:`//eu.linovision.com/cdn/shop/articles/DC12V_POE_Switch.webp?v=1701767205`, content:``, published_at:``, sku:[] } allObj.sku.push("POE-Switch0504GD") allObj.sku.push("POE-Switch1008-Solar") allObj.sku.push("POE-SW708GM-DC12V") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`A Cutting-edge Splitter Device for the Most Demanding Settings`, url:`/en-us/blogs/blog/a-cutting-edge-splitter-device-for-the-most-demanding-settings`, image:`//eu.linovision.com/cdn/shop/articles/poe_splitter1224_540x_4980f21c-2540-432c-a0cf-acede2a37b54.webp?v=1701067169`, content:``, published_at:``, sku:[] } allObj.sku.push("POE-Splitter1224") allObj.sku.push("POE-Splitter1224 (5pc)") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`LINOVISION POE Switch Solution`, url:`/en-us/blogs/blog/linovision-poe-switch-solution`, image:`//eu.linovision.com/cdn/shop/articles/POE_Switch.png?v=1700202133`, content:``, published_at:``, sku:[] } allObj.sku.push("POE-SW304G") allObj.sku.push("POE-SW508G") allObj.sku.push("POE-Switch0504GD") allObj.sku.push("POE-Switch1008-Solar") allObj.sku.push("POE-SW708GM") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Upgrading Analog Cameras to IP Systems, WITHOUT Recabling?`, url:`/en-us/blogs/blog/upgrading-analog-cameras-to-ip-systems-without-recabling`, image:`//eu.linovision.com/cdn/shop/articles/upgrade_ip_system_720x_b45c15d6-8c7a-4b61-8222-1ed6872ba0ce.webp?v=1699241770`, content:``, published_at:``, sku:[] } allObj.sku.push("EOC-Converter (Receiver+Transmitter)") allObj.sku.push("EOC-Switch0806 KIT") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Bridging the PoE Transmission Gap in Outdoor Application`, url:`/en-us/blogs/blog/bridging-the-poe-transmission-gap-in-outdoor-application`, image:`//eu.linovision.com/cdn/shop/articles/BT90W_Outdoor_PoE_Extender_720x_2c02aadb-43f4-40f8-a2e3-963bb65a5786.webp?v=1698030246`, content:``, published_at:``, sku:[] } allObj.sku.push("POE-EXT6002GP") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`LINOVISION POE Extender Solution`, url:`/en-us/blogs/blog/linovision-poe-extender-solution`, image:`//eu.linovision.com/cdn/shop/articles/1581697622680_.pic.png?v=1697622864`, content:``, published_at:``, sku:[] } allObj.sku.push("POE-Extender02") allObj.sku.push("POE-EXT6002GP") allObj.sku.push("POE-EXT3001LP(2 Pack)") allObj.sku.push("POE-EXT3001GP") allObj.sku.push("POE-EXT04") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Managed vs. Unmanaged PoE Switches`, url:`/en-us/blogs/blog/managed-vs-unmanaged-poe-switches`, image:`//eu.linovision.com/cdn/shop/articles/05d9a2b7c570944aa37688ce6ee52b4b_720x_965601eb-1cf5-4bfa-80dc-e4574d5b16e8.webp?v=1695885956`, content:``, published_at:``, sku:[] } allObj.sku.push("POE-SW708GM") allObj.sku.push("POE-SW708GM-DC12V") allObj.sku.push("POE-SW716GM-10G") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`LINOVISION POE Splitter Solution`, url:`/en-us/blogs/blog/poe-splitter-solution`, image:`//eu.linovision.com/cdn/shop/articles/POE_Splitter.png?v=1695269297`, content:``, published_at:``, sku:[] } allObj.sku.push("POE-Splitter1224") allObj.sku.push("POE-SP02BT") allObj.sku.push("POE-SP01P(2 pack)") allObj.sku.push("POE-SP01C(2 pack)") allObj.sku.push("POE-SP01(2 pack)") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`PoE Port Management, A Primer for Network Admins`, url:`/en-us/blogs/blog/poe-port-management-a-primer-for-network-admins`, image:`//eu.linovision.com/cdn/shop/articles/Managed_PoE_Switch_720x_785fd843-6008-41d4-8a8f-48499385042f.webp?v=1694058942`, content:``, published_at:``, sku:[] } allObj.sku.push("POE-SW708GM") allObj.sku.push("POE-SW708GM-DC12V") allObj.sku.push("POE-SW716GM-10G") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Protecting Your Construction Site: Strategies for Theft Prevention through Cameras and Fencing`, url:`/en-us/blogs/blog/protecting-your-construction-site-strategies-for-theft-prevention-through-cameras-fencing-and-more`, image:`//eu.linovision.com/cdn/shop/articles/Protecting_Your_Construction_Site_2048x_b94f798a-60c2-43a6-8857-77ec20ed9f20.webp?v=1692695460`, content:`

Construction sites are bustling hubs of activity, where valuable materials, tools, and equipment are brought together to create impressive structures. However, they are also prime targets for theft and vandalism. The National Insurance Crime Bureau says that equipment theft costs the construction industry up to $1 billion every year. This includes not only the equipment that gets stolen (which is probably more than what's reported), but also the extra time it takes to finish projects, higher insurance costs, and more money needed. The financial implications of such incidents can be staggering, leading to delays, increased costs, and compromised project timelines. To safeguard your construction site and prevent loss from theft, implementing a comprehensive security plan is crucial. In this blog, we'll explore effective strategies to keep your construction site safe and secure.

Active vs. Passive PoE Switch: How to Choose? (129)

CREATE YOUR CUSTOMIZED SECURITY STRATEGY

Every construction site is distinctive, influenced by factors such as its location and the nature of the project. Due to these unique characteristics, security requirements will vary. To ensure optimal safeguarding, it is imperative to meticulously analyze the site, pinpoint vulnerabilities and high-priority targets, and formulate a comprehensive plan aimed at securing equipment and materials.Once the areas requiring heightened protection have been identified, the next step involves crafting an efficient strategy to safeguard your valuable assets. This could entail the installation of wireless security cameras for business purposes, possibly even multiple units, or the reinforcement of physical barriers. Additionally, the inclusion of on-site security personnel might become necessary for added protection.

Establish Physical Barriers

Securing the perimeter of your construction site is crucial for keeping unauthorized individuals out. Here are some additional steps to consider:

  • Fencing: Choose durable fencing materials like perimeter, welded wire mesh, or even temporary panels. The height of fencing should be enough to discourage climbing. Consider anti-climb features like angled tops or barbed wire.
  • Access Points: Install gates at designated entry and exit points. These gates should be lockable with sturdy padlocks or combination locks. Opt for keyless entry systems for added security and ease of access for authorized personnel.
  • Warning Signs: Place clearly visible signs around the perimeter indicating that the area is under surveillance, monitored, and that trespassers will be prosecuted. These signs serve as a deterrent.
Illuminate The Site

Darkness serves as the ally of thieves. Illuminating access points and other areas with ample light simplifies the task of identifying intruders, stripping away their shroud of obscurity. Proper lighting is essential for deterring criminals and increasing visibility at night. Here's how to enhance lighting on your construction site:

  • Strategic Placement: Install lighting fixtures at key areas such as entry points, storage areas, and around valuable equipment. Make sure to illuminate blind spots and potential hiding places.
  • Motion Sensors: Equip some of your lighting fixtures with motion sensors. This not only conserves energy but also startles intruders when lights suddenly turn on.
  • Timer Controls: Implement timers for your lighting systems. This ensures that the site remains well-lit even when there's no one present, making it less appealing to thieves.
UTILIZING SECURITY CAMERAS ON CONSTRUCTION SITES

Security cameras tailored for construction sites facilitate round-the-clock surveillance, with multiple units equipped to trigger alerts and deterrents upon detecting motion.Businesses that have integrated these construction site security cameras into their operations benefit from the ability to amass crucial evidence in the event of incidents, access time-lapse footage showcasing project progression, and tap into the live feed seamlessly through desktop or mobile portals, anytime and anywhere.These cameras play a pivotal role in providing a secure means of monitoring the site, promptly notifying law enforcement about ongoing criminal activities rather than incidents that have already transpired.Considering the often restricted access to power and utilities at construction sites, opting for solar-powered or alternative power source-enabled cameras becomes paramount. Moreover, establishing a connection to the cloud through mobile phone towers, as opposed to relying solely on Wi-Fi, can yield significant advantages. Let's explore how solar-powered cameras can enhance the security of your construction site while minimizing its carbon footprint:

Active vs. Passive PoE Switch: How to Choose? (130)

1. Off-Grid Power Source:

One of the standout advantages of solar-powered cameras is their ability to operate independently of the electrical grid. Construction sites often lack access to stable power sources, which can make traditional surveillance setups challenging. Solar-powered cameras solve this issue by harnessing energy from the sun, ensuring consistent operation even in remote locations.

2. Cost-Efficiency:

While the initial investment in solar-powered cameras may be higher than conventional cameras, they offer substantial long-term savings. You eliminate the need for extensive wiring and power infrastructure, which can be costly to install and maintain. With solar power, ongoing operational costs are significantly reduced, contributing to your project's overall budget efficiency.

3. Remote Locations:

Construction projects often occur in remote or temporary locations where power supply is limited or nonexistent. Solar-powered cameras are tailor-made for such scenarios. They provide reliable surveillance without the need for extensive infrastructure installation, making them a versatile choice for diverse project environments.

4. Easy Installation:

Installing solar-powered cameras is relatively straightforward. They can be mounted in strategic locations without the complexities associated with laying cables and connecting to power sources. This simplicity not only speeds up deployment but also minimizes disruptions to ongoing construction activities.

5. Uninterrupted Surveillance:

Solar-powered cameras typically feature built-in battery systems that store excess energy generated during the day. This stored energy ensures continuous operation even during cloudy days or at night. Your surveillance system remains functional around the clock, providing comprehensive security coverage.

6. Mobile Monitoring:

Many solar-powered camera systems offer remote monitoring capabilities, allowing you to access live footage and alerts via your smartphone, tablet, or computer. This feature is especially useful for construction site managers who need to stay informed about site activity even when they're off-site.

7. Scalability:

Solar-powered camera systems are scalable, meaning you can add or relocate cameras as your construction site evolves. This flexibility aligns with the dynamic nature of construction projects and ensures that your security measures remain effective throughout various phases.

Conclusion

The integration of cutting-edge technologies such as surveillance cameras, with AI Smart funcations like motion detection, intruders detections and alarm systems furnishes construction site managers with invaluable tools for real-time monitoring and response. These advancements not only deter potential thieves but also facilitate swift action in the event of suspicious activities, minimizing potential losses and disruptions. Additionally, the implementation of robust fencing and controlled access points serves as a physical barrier against unauthorized entry. By fortifying the perimeter, construction sites convey a strong message that security is a priority, dissuading intruders and minimizing vulnerabilities.In a sector where time, resources, and equipment are highly valuable, taking preemptive measures to prevent theft and vandalism becomes paramount. By adopting a holistic approach encompassing technological innovation, physical fortification, access control, and human surveillance, construction sites can effectively mitigate risks and uphold the safety and progress of their projects.

`, published_at:``, sku:[] } allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Elevating Industrial Security with Solar Powered Surveillance`, url:`/en-us/blogs/blog/elevating-industrial-security-with-solar-powered-surveillance`, image:`//eu.linovision.com/cdn/shop/articles/Solar_Powered_Surveillance_1296x_90581624-00dd-44a7-a204-fc9ea56d9d6d.webp?v=1691998164`, content:`

In today's rapidly evolving world, ensuring the safety and security of industrial settings has become more critical than ever. Traditional security camera systems often come with limitations such as dependency on grid power and wired internet connectivity. However, the advent of technology has brought about innovative solutions to overcome these challenges. One such breakthrough is the development of Commercial 4G LTE Solar Powered Security Camera Systems, which provide continuous remote monitoring for locations lacking access to grid power and wired internet. In this blog, we will delve into the advantages and applications of the LINOVISION 4G LTE Solar Powered Security Camera system.

The integration of solar power and 4G LTE technology is revolutionizing the security camera industry by addressing two major hurdles – power source dependency and connectivity. These advanced systems harness energy from the sun through solar panels, ensuring consistent power supply even in off-grid locations. This system taps into the virtually limitless power of the sun to ensure continuous operation. This self-sustaining energy source not only eliminates the need for grid power but also significantly reduces operational costs over time.

The 4G LTE connectivity, on the other hand, guarantees a stable and fast data connection, enabling real-time remote monitoring. This combination eliminates the need for cumbersome wiring and traditional power sources, making this system highly versatile and cost-effective.

Active vs. Passive PoE Switch: How to Choose? (131)

Features and Benefits of LINOVISION's Solar Powered Camera System:

  1. 24/7 Remote Monitoring: The system empowers users with the ability to monitor their premises remotely around the clock, security concerns don't adhere to a schedule, and incidents can occur at any time. The system offers round-the-clock surveillance with its advanced night color view technology and AI Smart motion detection capabilities. This ensures that every corner of the monitored area is under constant watch, providing peace of mind for site owners and managers.
  2. Flexibility and Easy Installation: The wireless nature of these systems simplifies the installation process. Without the need for extensive wiring and electrical work, users can set up cameras at strategic locations quickly.
  3. Diverse Applications: These solar powered camera systems find applications in various settings such as construction sites, farms, ranch houses, barns, and warehouses, demonstrating their adaptability to different commercial environments. These industrial facilities are often situated in remote areas with limited access to power sources and communication networks. The LINOVISION 4G LTE Solar Powered Security Camera System is equipped with solar panels and 4G LTE connectivity, allowing it to operate autonomously in areas with minimal infrastructure. This ensures continuous monitoring of critical assets regardless of the location, enabling prompt response to potential security threats.
  4. Customizability: One of the key features of this system is the ability to be equipped with the comprehensive range of functions of LINOVISION’s security cameras to suit different applications. This means that the system can be tailored to meet the specific requirements of different environments, such as farms, construction sites, or any other location that requires special monitoring.
  5. Environmental Sustainability: The integration of solar power aligns with sustainability goals, reducing carbon footprint and promoting environmentally-friendly practices.

The marriage of solar power and 4G LTE technology has ushered in a new era of security camera systems. LINOVISION's Commercial 4G LTE Solar Powered Security Camera Systems offer an effective and efficient solution for locations lacking grid power and wired internet connectivity. With features such as remote monitoring, easy installation, and diverse applications, this system provides a comprehensive security solution for various commercial settings. By embracing this innovative technology, businesses can enhance their security protocols while contributing to environmental sustainability. As the world continues to progress, investing in cutting-edge security solutions like these is a step towards a safer and more connected future.

`, published_at:``, sku:[] } allObj.sku.push("GO BOX-V12100PW") allObj.sku.push("GO BOX-V12100W-LPR") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`LINOVISION EOC, Powering Possibilities Over Ultra-Long Distances`, url:`/en-us/blogs/blog/linovision-eoc-powering-possibilities-over-ultra-long-distances`, image:`//eu.linovision.com/cdn/shop/articles/1280X1280_1.png?v=1691398402`, content:`

In today's technology-driven world, Power over Ethernet (PoE) has become an indispensable aspect of networking infrastructure. It allows users to transmit both power and data over a single Ethernet cable, simplifying installations and reducing clutter. However, traditional PoE extenders have their limitations, restricting the transmission distance to only 100 meters. This constraint can pose significant challenges, especially in scenarios where power and data need to be transmitted over ultra-long distances. LINOVISION's groundbreaking EOC (Ethernet Over Coax) solution, empowering users to transmit PoE power and data up to an 1,000 meters (or 3,300ft) through regular Cat5e or Cat6 cables. Let's explore how this innovation is revolutionizing the industry and saving thousands in cabling costs.


Transmitting PoE Over Ultra-Long Distances


Several industries and applications demand the transmission of PoE power and data over vast distances. For example, imagine a scenario where a security camera needs to be powered from one building to another, 500 meters away. Traditional PoE extenders fall short in such instances, making installations cumbersome and expensive due to the need for additional infrastructure. Additionally, there are unique challenges, like powering PoE IoT devices located at opposite ends of an underwater tube, where laying new cables becomes impractical and costly.


LINOVISION's EOC Solution - Powering Beyond Limits


LINOVISION's has taken a pioneering step in addressing these challenges by introducing an innovative EOC solution. This cutting-edge technology empowers users to extend PoE power and data transmission over ultra-long distances, reaching up to 1,000 meters or approximately 3,300 feet. By utilizing standard Cat5e or Cat6 cables, this solution makes installations more straightforward, more cost-effective, and far less time-consuming.

Active vs. Passive PoE Switch: How to Choose? (132)

Benefits of LINOVISION's EOC Solution

  1. Extended Reach: LINOVISION's EOC solution shatters the 100-meter barrier imposed by traditional PoE extenders, offering unparalleled reach of up to 1,000 meters. This opens up new possibilities for diverse applications, from long-distance surveillance to industrial IoT deployments.

  1. Cost-Effective: By leveraging existing cabling infrastructure, users can save substantial amounts on expensive new cabling installations. This cost-effectiveness is particularly advantageous for projects with budget constraints.

  1. Streamlined Installations: The simplicity of using standard cables makes installations faster and easier, reducing overall setup time and complexity.

  1. Reliability: LINOVISION's EOC solution ensures stable and reliable PoE power and data transmission, even over ultra-long distances, eliminating concerns about data loss or device malfunctions.

LINOVISION's EOC solution has truly redefined the boundaries of PoE power and data transmission. By enabling distances of up to 1,000 meters through regular Cat5e or Cat6 cables, this innovation has proven invaluable in various industries, saving costs, time, and effort. As technology continues to evolve, LINOVISION's remains at the forefront, empowering businesses with groundbreaking solutions that revolutionize the way we power our world.


Go Ultra Long:https://eu.linovision.com/collections/poe-over-coax/products/eoc-converter


YouTube Video Link: https://youtu.be/iyuVxtAOCbs

`, published_at:``, sku:[] } allObj.sku.push("EOC-Converter (Receiver+Transmitter)") allObj.sku.push("Conv-EOC(5 Pack)") allObj.sku.push("Conv-EOC(10 Pack)") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Industrial 4G Router with MQTT and RS485 Integration as an IoT Gateway`, url:`/en-us/blogs/blog/industrial-4g-router-with-mqtt-and-rs485-integration-as-an-iot-gateway`, image:`//eu.linovision.com/cdn/shop/articles/Mqqt-BLOG_720x_68ba3edc-f187-492f-9cff-15b70f9f441c.webp?v=1690441439`, content:`

In the dynamic world of IoT, connectivity and data integration play a vital role in driving innovation and unlocking new possibilities. Today, we're thrilled to introduce our solution: the Industrial 4G Router integrated with MQTT and RS485, serving as a powerful IoT Gateway. In this blog, we'll delve into the unparalleled advantages of this integration, and find out how it revolutionizing the way you connect and integrate your IoT devices.

Active vs. Passive PoE Switch: How to Choose? (133)

Seamless Connectivity and Data Integration:
The integration of an Industrial 4G Router with MQTT and RS485 as an IoT Gateway offers a seamless connection between diverse devices and systems. This integration acts as a bridge, enabling smooth communication and data exchange between RS485-connected devices and MQTT-enabled devices in your IoT ecosystem. Welcome a unified and interconnected infrastructure.

Unlocking Efficiency with MQTT:
With MQTT integration, the Industrial 4G Router facilitates efficient and lightweight communication. MQTT's lightweight protocol ensures optimized data transfer, enabling rapid exchange of information and improving network performance. Real-time data streaming using MQTT's publish-subscribe model allows for reliable messaging, timely updates, and swift decision-making across your IoT devices.

Protocol Conversion and Interoperability:
One of the key advantages of this Industrial 4G Router as IoT Gateway is its ability to handle both RS485 and MQTT protocols. This empowers seamless protocol conversion and interoperability, enabling devices using different protocols to communicate effortlessly. Experience the synergy as RS485 devices and MQTT-enabled applications seamlessly exchange data, fostering a harmonious and interconnected IoT ecosystem.

Enhanced Security and Data Integrity:
Data security is paramount in the IoT landscape, and our Industrial 4G Router with MQTT and RS485 integration ensures your data remains protected. MQTT's built-in security features, including authentication, authorization, and encryption, safeguard your data during transmission. This ensures data integrity and protects against unauthorized access, providing peace of mind for your critical IoT applications.

Remote Monitoring and Control:
Thanks to MQTT integration, LINOVISION Industrial 4G Router enables remote monitoring and control of RS485-connected devices. Leveraging the power of MQTT, you can access, manage, and control industrial devices from anywhere, anytime. Realize the benefits of remote operation, reduced maintenance costs, and swift response to critical situations, all while maximizing operational efficiency.

Scalability and Adaptability:
As your IoT infrastructure grows, our Industrial 4G Router with MQTT and RS485 integration offers scalability and adaptability. Easily accommodate an increasing number of RS485 devices and seamlessly integrate new IoT technologies. This flexibility allows your IoT solution to evolve alongside your business needs, ensuring a future-proof and adaptable infrastructure.

The Industrial 4G Router integrated with MQTT and RS485 as an IoT Gateway unlocks a world of possibilities for your IoT projects. Seamlessly connect devices, optimize data exchange, and unleash the true power of your IoT ecosystem. Experience efficient communication, enhanced security, and real-time insights that drive informed decision-making. Are you ready to transform the way you connect and integrate your IoT devices? Visit our website or contact us today to learn more.

`, published_at:``, sku:[] } allObj.sku.push("IOT-R51W") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`How Virtual SIM enhanced Industrial 4G Router Performance in industrial settings`, url:`/en-us/blogs/blog/how-virtual-sim-enhanced-industrial-4g-router-performance-in-industrial-settings`, image:`//eu.linovision.com/cdn/shop/articles/R51W-BLOG_720x_6077cb9d-cc0e-4d08-a4ec-a859a7c0c3c2.webp?v=1689587854`, content:`

In today's industrial settings, seamless and reliable connectivity is vital for efficient operations and remote asset management. The advent of virtual SIM cards has enhanced the capabilities of Industrial 4G Routers, offering unparalleled flexibility, scalability, and cost optimization. In this blog, we will explore how virtual SIM cards bring significant benefits to industrial settings, empowering Industrial 4G Routers to deliver robust and efficient connectivity.

Seamless Scalability:
The scalability of industrial operations can present significant challenges. Virtual SIM cards simplify the process of expanding connectivity in industrial settings. Adding new devices to the network becomes a seamless task, eliminating the need for physical SIM card swaps or configuration adjustments. The ability to remotely provision virtual SIM cards ensures rapid deployment and facilitates the growth of industrial infrastructure without disruption.


Active vs. Passive PoE Switch: How to Choose? (134)

Network Redundancy and Reliability:
Industrial 4G Routers equipped with virtual SIM cards provide robust network redundancy and reliability. By leveraging multiple network operators simultaneously, these routers can ensure uninterrupted connectivity even if one network experiences an outage or poor performance. This redundancy is crucial for mission-critical applications in industries such as oil and gas, renewable energy, and manufacturing, where downtime can result in significant losses.


Active vs. Passive PoE Switch: How to Choose? (135)

Remote Management and Control:
The remote management capabilities offered by virtual SIM cards are a game-changer for industrial settings. IT administrators can remotely provision, activate, deactivate, and update SIM card profiles without the need for physical access to the routers. This centralized management enables efficient monitoring, configuration, and troubleshooting of Industrial 4G Routers, saving time and reducing operational costs.

Active vs. Passive PoE Switch: How to Choose? (136)

Enhanced Security:
Security is of utmost importance in industrial environments. Virtual SIM cards enhance the security of Industrial 4G Routers by eliminating the risks associated with physical SIM cards, such as theft or tampering. Additionally, by leveraging virtual private network (VPN) technologies, the transmission of data between industrial assets and central management systems can be encrypted, ensuring secure communication.

LINOVISION Industrial 4G Routers with Virtual SIM Card are purpose-built devices designed to deliver reliable and secure connectivity in demanding industrial environments. It offers a number of features that make it a good choice for industrial applications, including:
- WLAN for hotspot or WAN
- Ethernet port
- Act as an IoT gateway (DTU) with RS232 & RS485 ports
- Working with most major cellular carriers
- Support physical SIM card (higher priority when SIM card is inserted)

Learn More:https://eu.linovision.com/products/iot-r51w

`, published_at:``, sku:[] } allObj.sku.push("IOT-R51W") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Introducing Industrial 8 Port Full Gigabit Managed PoE Switch`, url:`/en-us/blogs/blog/introducing-industrial-8-port-full-gigabit-managed-poe-switch`, image:`//eu.linovision.com/cdn/shop/articles/Managed-DC12V-PoE-Switch-BLOG_720x_859df49f-3190-4403-a6f7-d6de1c49c89c.webp?v=1689061788`, content:`

Introducing LINOVISION Industrial 8 Port Full Gigabit Managed PoE Switch with DC12V/DC24V to DC48V Voltage Booster, this high-end managed PoE Switch is designed to meet the diverse needs of modern businesses and offers a comprehensive range of features and functionalities that enhance the way you power and connect your devices.

At its core, this Industrial Managed PoE Switch seamlessly integrates power and data transmission, With its 8*10/100/1000BASE-T PoE RJ-45 ports (Auto MDI/MDIX), you can effortlessly connect and power a multitude of devices, including IP cameras, wireless access points, VoIP phones, and more. But it doesn't stop there. It also features 2*1G/2.5GBASE-X SFP uplink ports, ensuring high-speed connectivity and efficient data transfer between devices.

An exceptional feature that sets this PoE Switch apart is its wide voltage input range. Whether you're operating in a solar-powered setup, vehicles, or AC power-less environments, this switch provides reliable and flexible power options. Its DC12~57V redundant power inputs ensure uninterrupted power supply, making it ideal for a wide range of applications and industries.

Managing your network has never been easier. With the comprehensive L2 managed capabilities of this PoE switch, you gain complete control over your network infrastructure. Take control of your network with VLAN support, Quality of Service (QoS), PoE management and PoE port control etc. The switch also incorporates ONVIF camera discovery, simplifying the integration of IP cameras into your surveillance system.
Featuring Quick PoE and Perpetual PoE, it guarantees uninterrupted power supply to your devices. Say goodbye to downtime and enjoy reliable and stable power delivery, even during unexpected power fluctuations or outages.

Furthermore, the switch is equipped with an RS485 port, enabling seamless integration with IoT sensors and offering remote control capabilities. This integration empowers you to enhance automation and operational efficiency.

All in all, the LINOVISION Industrial 8 Port Full Gigabit Managed PoE Switch enhanced network infrastructure with its advanced features and comprehensive functionalities. With its powerful combination of full gigabit connectivity, efficient power management, and intelligent network control, this PoE Switch empowers businesses to optimize their operations and stay ahead in a rapidly evolving digital landscape.

`, published_at:``, sku:[] } allObj.sku.push("POE-SW708GM-DC12V") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`Unleash Unprecedented Connectivity with Full Gigabit Managed PoE Switch`, url:`/en-us/blogs/blog/unleash-unprecedented-connectivity-with-full-gigabit-managed-poe-switch`, image:`//eu.linovision.com/cdn/shop/articles/manage-BLOG_720x_570244da-eb3d-46a9-b9b9-40c9c37001c6.webp?v=1687850543`, content:`

In the world of industrial networking, reliability, flexibility, and advanced management capabilities are crucial for seamless operations. LINOVISION brings you an innovative solution, our newly launched, the Industrial 8 Port Full Gigabit Managed PoE Switch with DC12V/DC24V to DC48V Voltage Booster. This remarkable switch stands as the pinnacle of excellence, surpassing the success of our highly acclaimed best-seller, LINOVISION Industrial PoE Switch 8 Port Full Gigabit with Voltage Booster. Get ready to experience a new level of connectivity and efficiency as we delve into the exceptional features that define this high-end PoE Switch.

  1. High-Speed Ethernet and Uplink Connectivity: The LINOVISION Industrial Managed PoE Switch provides 8 *10/100/1000BASE-T PoE RJ-45 ports, ensuring high-speed Ethernet connectivity for your network devices. Additionally, it offers 21G/2.5GBASE-X SFP uplink ports, enabling seamless connectivity with fiber optic or high-speed network links. Enjoy reliable and fast data transmission across your network.

Active vs. Passive PoE Switch: How to Choose? (137)

  1. L2 Management for Enhanced Control: Take control of your network with the L2 management capabilities of this switch. Enjoy features such as VLAN for network segmentation, QoS (Quality of Service) for prioritizing critical data, PoE management for efficient power allocation, and PoE port control for granular control over PoE devices. Additionally, benefit from ONVIF camera discovery, simplifying the integration of IP cameras into your surveillance network.

Active vs. Passive PoE Switch: How to Choose? (138)

  1. Wide Voltage Input for Versatile Power Options: The LINOVISION Industrial Managed PoE Switch offers a wide voltage input range of DC12~57V, accommodating various power sources. Whether you're utilizing solar power systems, vehicles, or operating in AC power-less environments, this switch ensures uninterrupted power supply and flexibility in power options.

Active vs. Passive PoE Switch: How to Choose? (139)

  1. Seamless IoT Integration and Remote Control: With the integrated RS485 port, this switch allows easy integration of IoT sensors into your network infrastructure. Control and monitor IoT devices remotely, enhancing efficiency and expanding the possibilities for IoT applications in your industrial environment.

  1. Q-PoE and P-PoE for Power Optimization: Experience Quick PoE (Q-PoE) technology, enabling efficient power management and quick deployment of PoE devices. Ensure uninterrupted power supply with Perpetual PoE (P-PoE), eliminating the need for manual power cycling. Enjoy enhanced reliability and reduced downtime in your network operations.

Active vs. Passive PoE Switch: How to Choose? (140)

  1. 90W BT PoE Output for High Power-demanding Devices: Power-demanding devices are no challenge for this switch. With IEEE802.3af/at PoE output, it delivers up to 90W of power, supporting high-power devices such as PTZ cameras and access points. Choose from power options of 240W @ 48V, 120W @ 24V, or 60W @ 12V to cater to your specific requirements.

  1. Intelligent PoE Watchdog: Rest assured that your powered devices are always operational with the PoE Watchdog feature. This intelligent function automatically detects and reboots freezing powered devices, ensuring their continuous performance and reducing the need for manual intervention.

  1. Industrial-Grade Design and Robustness: LINOVISION's Industrial Managed PoE Switch features a fanless design, ensuring silent and reliable operation. It is built with industrial-grade components, offering surge and ESD (Electrostatic Discharge) protection. With an impressive operating range of -40℃ to +75℃ (-40 ℉ to +167 ℉), it can withstand extreme temperatures, making it suitable for challenging industrial environments.

  1. Future-Proof Expansion Options: This switch goes beyond traditional networking capabilities. With a USB 3.0 port, it allows for easy integration of a GPS module. It also reserves EMMC and PCI-E interfaces, providing flexibility for future expansion, Docker mode, or virtual machine integration.

`, published_at:``, sku:[] } allObj.sku.push("POE-SW708GM-DC12V") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) allObj= { title:`What role does a Managed PoE Switch with RS485 Integration play in an IoT project?`, url:`/en-us/blogs/blog/what-role-does-a-managed-poe-switch-with-rs485-integration-play-in-an-iot-project`, image:`//eu.linovision.com/cdn/shop/articles/Managed-PoE-Switch-BLOG_720x_6e524c54-0b10-491a-87aa-5268478773d9.webp?v=1687241424`, content:`

A Managed PoE Switch with an RS485 Integration can play a vital role in IoT (Internet of Things) projects by providing power, connectivity, and management capabilities to a wide range of IoT devices. Here's how it can contribute to the success of an IoT project:

  1. Powering IoT Devices: Many IoT devices, such as IP cameras, wireless access points, environmental sensors, or smart lighting, can be powered through Power over Ethernet (PoE) technology. A Managed PoE Switch with an RS485 port can supply power to these PoE-enabled IoT devices, eliminating the need for separate power sources and simplifying installation.

  1. Connectivityfor IoT Devices: IoT projects often involve a diverse set of devices that need to communicate with each other and with the central management system. The Managed PoE Switch provides Ethernet connectivity to PoE-enabled IoT devices via its regular Ethernet ports and allows communication with RS485 devices through the RS485 port. This enables seamless integration of both Ethernet and RS485-based IoT devices within the network.

  1. Integration with Legacy Systems: Many legacy systems in industrial automation or building management rely on RS485 communication. The RS485 port on a Managed PoE Switch allows for direct integration of these existing RS485-based systems into the IoT project. It enables IoT devices to interface and exchange data with legacy systems, leveraging their capabilities and extending their functionality.

  1. Centralized Management andMonitoring: A Managed PoE Switch provides advanced management and monitoring features, allowing centralized control of the network and connected IoT devices. It enables remote configuration, monitoring of device status, traffic management, and troubleshooting. The management capabilities help ensure the smooth operation and efficient management of the IoT project.

  1. Enhanced Security: IoT projects often deal with sensitive data and require robust security measures. Managed PoE switches offer advanced security features such as Access Control Lists (ACLs), VLANs, and port security. These features help secure the network infrastructure, protect data, and prevent unauthorized access to IoT devices and systems.

  1. Scalability and Flexibility: Managed PoE switches are designed to be scalable and flexible, allowing for easy expansion of the IoT project as new devices are added. The switch's management capabilities enable the creation of VLANs, Quality of Service (QoS) configurations, and link aggregation, ensuring optimal network performance and adaptability to changing project requirements.

By combining the power and connectivity of PoE with the integration capabilities of an RS485 IoT Devices, a Managed PoE Switch plays a crucial role in enabling seamless communication, management, and power delivery for IoT devices. It simplifies deployment, enhances security, and improves the overall efficiency of IoT projects across various industries and applications.

Let's explore some Applications of Managed PoE Switches with RS485 Integration in IoT Projects.

  1. Smart Building Automation: An IoT project focused on automating various building systems, such as lighting, HVAC, access control, and energy management. The Managed PoE Switch with RS485 connectivity can integrate legacy RS485-based controllers and sensors with Ethernet-based IoT devices, enabling centralized control and monitoring of the building systems.

  1. Industrial IoT (IIoT) Applications: Implementing IoT in industrial settings, such as factories or manufacturing plants, to optimize processes, monitor equipment health, and improve productivity. The Managed PoE Switch can connect a wide range of IoT devices, including both Ethernet-based sensors and RS485-enabled industrial machinery, facilitating data collection, analysis, and predictive maintenance.

  1. Smart City Infrastructure: Developing an IoT project that focuses on creating a connected infrastructure within a city. The Managed PoE Switch with RS485 support can enable the integration of various devices, such as smart streetlights, environmental sensors, traffic management systems, and RS485-based infrastructure components, providing centralized control and monitoring capabilities.

  1. IoT-based Agriculture: Deploying IoT technologies to enhance agricultural practices, optimize irrigation, monitor soil conditions, and manage crop growth. The Managed PoE Switch can power and connect PoE-enabled devices like wireless sensors and IP cameras, while integrating RS485-based controllers for irrigation systems and other agricultural equipment.

  1. Healthcare IoT: Implementing IoT solutions in healthcare environments to enhance patient care, streamline operations, and improve safety. The Managed PoE Switch with RS485 connectivity can integrate medical devices, such as patient monitoring systems and legacy RS485-based medical equipment, ensuring seamless communication and centralized management of the IoT infrastructure.

  1. Transportation and Fleet Management: Developing an IoT project focused on optimizing transportation systems, tracking vehicles, and improving logistics. The Managed PoE Switch can power and connect PoE-enabled devices like GPS trackers and IP cameras, while integrating RS485-based systems for vehicle tracking, fleet management, and communication with on-board devices.

These examples highlight the versatility of an IoT project and how a Managed PoE Switch with an RS485 integration can play a crucial role in enabling seamless integration, centralized management, and efficient connectivity for a wide range of IoT applications.

`, published_at:``, sku:[] } allObj.sku.push("POE-SW708GM-DC12V") allObj.content=allObj.content+allObj.sku.join() arr.push(allObj) console.log(arr) let newArr=arr.filter(item=> { let reg= new RegExp(item.url,'g'); return reg.test('https://eu.linovision.com/en-us/blogs/blog/active-vs-passive-poe-switch-how-to-choose') })[0] let useArr=arr.filter(item=> { let reg= new RegExp(item.url,'g'); return (!reg.test('https://eu.linovision.com/en-us/blogs/blog/active-vs-passive-poe-switch-how-to-choose'))&&item.sku.includes(newArr.sku[0])}).slice(0,5) let str='' for(let i=0;i

Active vs. Passive PoE Switch: How to Choose? (141)

${ useArr[i].title }

${ useArr[i].published_at }

` } $(blogA).append(str) })()
Active vs. Passive PoE Switch: How to Choose? (2024)
Top Articles
Latest Posts
Article information

Author: Twana Towne Ret

Last Updated:

Views: 6089

Rating: 4.3 / 5 (44 voted)

Reviews: 91% of readers found this page helpful

Author information

Name: Twana Towne Ret

Birthday: 1994-03-19

Address: Apt. 990 97439 Corwin Motorway, Port Eliseoburgh, NM 99144-2618

Phone: +5958753152963

Job: National Specialist

Hobby: Kayaking, Photography, Skydiving, Embroidery, Leather crafting, Orienteering, Cooking

Introduction: My name is Twana Towne Ret, I am a famous, talented, joyous, perfect, powerful, inquisitive, lovely person who loves writing and wants to share my knowledge and understanding with you.