Mwongozo wa Mtumiaji wa Moduli ya Relay ya Ethernet ya Waveshare Modbus POE ETH Relay ya Channel 8

1. Bidhaa Imeishaview

The Waveshare Modbus POE ETH Relay is an industrial-grade 8-channel relay module designed for control via an Ethernet port. It supports both Modbus RTU and Modbus TCP protocols, offering versatile communication options. This module also features Power over Ethernet (PoE) for simplified power supply and comes housed in a durable ABS rail-mount case for easy installation in industrial environments.

Waveshare Modbus POE ETH Relay Module, top-down view

Kielelezo 1: Juu-chini view of the Waveshare Modbus POE ETH Relay Module, showing relay channels, Ethernet port, and power input.

2. Sifa Muhimu

8-Channel Relay Control: Provides eight independent relay channels for controlling various devices.
Modbus Protocol Support: Compatible with Modbus RTU and Modbus TCP protocols for industrial automation.
Ugavi wa Nguvu wa PoE: Supports IEEE 802.3af compliant Power over Ethernet, simplifying wiring.
Upana VoltagKuingiza: Accepts DC 7V to 36V power input via screw terminal or DC 5.5*2.1 power port.
Flash-on, Flash-off Function: Allows temporary relay activation with automatic deactivation after a specified duration.
MQTT Protocol Support: Enables control through MQTT, with an Alibaba Cloud MQTT application demo available.
Kutengwa kwa Optocoupler: Onboard optocoupler isolation protects the relay from high-voltage circuit interference.
Reverse-Proof Circuit: Integrated protection against accidental damage from incorrect power connection.
High-Quality Relays: Contact rating of ≤10A 250VAC/30VDC, suitable for controlling home appliances or low-voltage DC devices.
Rail-Mounted ABS Case: Durable and safe enclosure designed for easy installation on DIN rails.
Viashiria vya hali: Four LEDs (RUN, STA, TXD, RXD) and network indicators provide real-time status feedback.

3. Kuweka na Kuweka

3.1 Chaguzi za Ugavi wa Nguvu

The module offers flexible power input methods:

Bandari ya PoE: Connect an IEEE 802.3af compliant PoE switch or injector to the Ethernet port.
DC 5.5*2.1 Power Port: Use a DC 7V-36V power adapter.
Screw Terminal: Connect a DC 7V-36V power source to the designated screw terminals.

Power supply options for Waveshare Modbus POE ETH Relay, showing PoE, DC power port, and screw terminal connections.

Figure 2: Illustration of multiple power supply options including PoE, DC power port, and screw terminals.

Uunganisho wa Mtandao

Connect the module to your network using a standard Ethernet cable. If using PoE, ensure your network equipment supports it. The module supports TCP Server, TCP Client, UDP Mode, UDP Multicast, HTTP, and MQTT communication modes.

3.3 Muunganisho wa Relay

Each of the 8 relay channels provides 1 Normally Open (NO) and 1 Normally Closed (NC) contact. The common (COM) terminal is also available. Ensure that the connected load's voltage and current do not exceed the relay's contact rating of ≤10A 250VAC/30VDC.

For AC 220V devices, connect the device in series with the COM and NO/NC terminals.
For DC 30V devices, connect the device in series with the COM and NO/NC terminals, observing polarity if necessary for the device.

Relay connection diagrams for AC 220V and DC 30V devices, showing wiring to COM, NO, and NC terminals.

Figure 3: Wiring diagrams for connecting AC 220V and DC 30V devices to the relay contacts.

3.4 Rail-Mount Installation

The module is designed with an ABS protective enclosure for rail mounting. Simply clip the module onto a standard DIN rail in your control cabinet or enclosure.

4. Maagizo ya Uendeshaji

4.1 Itifaki za Mawasiliano

The module primarily communicates using Modbus RTU and Modbus TCP protocols. Commands are sent via the Ethernet port to control the relays.

Modbus RTU: Typically used over serial communication, but supported over Ethernet for compatibility.
Modbus TCP: Standard protocol for Modbus communication over Ethernet networks.

Refer to the official Waveshare documentation or development resources for detailed Modbus register maps and command structures.

4.2 Flash-on, Flash-off Function

This feature allows you to momentarily activate a relay. By passing a specific argument with the control command, the relay will turn on for a set duration and then automatically turn off. Consult the programming guide for command syntax and timing parameters.

4.3 MQTT Control

The module supports control via MQTT protocol. This enables integration with IoT platforms and cloud services. An Alibaba Cloud MQTT application demo is available for reference, demonstrating how to publish commands and subscribe to status updates.

Viashiria vya Hali

Monitor the module's operational status using the onboard LEDs:

RUN (Ethernet Port Indicator): Blinks in 2-second cycles when the Ethernet port is functioning normally.
STA (MCU Indicator): Blinks when the Microcontroller Unit (MCU) is operating normally.
TXD (Transmit Data Indicator): Lights up when the module is sending data.
RXD (Receive Data Indicator): Lights up when the module is receiving data.
Ethernet Port Green Indicator: Lights up when a network connection is established.
Ethernet Port Yellow Indicator: Blinks to indicate data activity (transmitting/receiving).

Diagram showing LED indicators and their functions on the Waveshare Modbus POE ETH Relay module.

Kielelezo 4: Kina view of the module's interfaces and LED indicators.

5. Matengenezo

The Waveshare Modbus POE ETH Relay module is designed for industrial reliability and requires minimal maintenance. However, adhering to the following guidelines can ensure optimal performance and longevity:

Masharti ya Mazingira: Operate the module within its specified temperature and humidity ranges. Avoid exposure to excessive dust, moisture, or corrosive substances.
Kusafisha: If necessary, gently clean the exterior of the module with a soft, dry cloth. Do not use liquid cleaners or solvents. Ensure the device is powered off before cleaning.
Sasisho za Firmware: Angalia mara kwa mara afisa wa Waveshare webtovuti kwa masasisho yoyote ya programu dhibiti yanayopatikana. Fuata maagizo yaliyotolewa kwa uangalifu kwa taratibu zozote za kusasisha.
Uadilifu wa Muunganisho: Regularly inspect all power and network connections to ensure they are secure and free from damage.

6. Utatuzi wa shida

This section provides solutions to common issues you might encounter with the Modbus POE ETH Relay module.

Tatizo	Sababu inayowezekana	Suluhisho
Moduli haiwaki.	Ugavi wa umeme usio sahihitage or polarity; faulty power source; PoE not active or incompatible.	Verify power input (7-36V DC) and polarity. Ensure PoE source is active and compliant with IEEE 802.3af. Check power cables and connections.
No network connection (Ethernet Green LED off).	Faulty Ethernet cable; network switch/router issue; incorrect network settings.	Check Ethernet cable for damage and proper connection. Verify network switch/router status. Ensure module's network settings (IP address, subnet mask) are correct.
Relays not responding to commands.	Incorrect Modbus address or function code; communication protocol mismatch; software configuration error.	Confirm Modbus RTU/TCP settings and relay addresses. Verify the commands sent match the protocol specifications. Check software configuration for errors. Ensure the MCU (STA LED) is blinking normally.
Intermittent relay operation.	Kiwango cha juutage interference; unstable power supply; loose connections.	Ensure proper grounding. Check for strong electromagnetic interference sources. Verify power supply stability. Secure all wiring connections.

If you encounter issues not covered here, please refer to the official Waveshare online development resources or contact technical support.

7. Vipimo

Kigezo	Thamani
Mfano	Modbus POE ETH Relay
Ugavi wa Nguvu	PoE (IEEE 802.3af compliant), DC 5.5*2.1 port, or Screw terminal (7~36V DC)
Kiolesura cha Mawasiliano	Ethernet (PoE port)
Njia za Relay	8
Fomu ya Mawasiliano	1NO 1NC per channel
Ukadiriaji wa Anwani	≤10A 250VAC / 30VDC
Itifaki ya Modbus	Modbus RTU Protocol, Modbus TCP Protocol
Hali ya Uendeshaji	Otomatiki
Vipimo vya Bidhaa	Inchi 5.7 x 3.54 x 1.57 (145 x 90 x 40 mm)
Uzito	Wakia 8.82 (250g)

Outline dimensions of the Waveshare Modbus POE ETH Relay module, showing measurements in millimeters.

Figure 5: Outline dimensions of the module.

8. Udhamini na Msaada

Bidhaa za Waveshare zimeundwa kwa ajili ya kutegemewa na utendaji. Kwa taarifa maalum za udhamini, tafadhali rejelea Waveshare rasmi webtovuti au wasiliana na kituo chako cha ununuzi.

For technical assistance, online development resources, and further documentation, please visit the official Waveshare support portal. If you encounter any problems or require detailed guidance, do not hesitate to contact Waveshare technical support directly.

Note: Online Development Resources and Technical Support are provided.

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waveshare Modbus POE ETH Relay