8-ch Ethernet Relay Module (B) With Digital Input, Modbus RTU/Modbus TCP Protocol, PoE Port Communication, With Various Isolation And Protection Circuits
Motors / Relays / SCR, Ethernet TO UART / RS232 / RS485, Power / Relays / SCR

8-ch Ethernet Relay Module (B) With Digital Input, Modbus RTU/Modbus TCP Protocol, PoE Port Communication, With Various Isolation And Protection Circuits

SKU:27876
Part No.:Modbus POE ETH Relay (B)
Brand:Waveshare

CA$67.11
PriceQuantity
1
CA$65.682
CA$64.963
CA$64.684+
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Description

Details

8-ch Ethernet Relay Module (B) With Digital Input, Modbus RTU/Modbus TCP Protocol, PoE Port Communication, With Various Isolation And Protection Circuits, Industrial Grade Rail-Mount Case
8-ch Ethernet Relay Module (B)
With Digital Input

Ethernet Port Communication, Modbus Protocol, PoE Power Supply

8-ch Ethernet Relay Module (B), front view
Features At A Glance

This product is an industrial 8-ch relay module controlled via Ethernet port, with 8-ch digital input, adopts Modbus RTU/Modbus TCP protocols, supports PoE power supply, also comes with an ABS rail-mount case.

The Modbus POE ETH Relay (B) is very easy to use. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipments and/or applications with high communication requirements.

  • Features flash-on, flash-off function, by passing argument to the command, it is possible to turn on the relay for a while and then close it automatically
  • Supports DC 7~36V wide range power input and PoE power supply
  • Supports relay control through MQTT protocol, comes with Alibaba Cloud MQTT application demo
  • Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit
  • Adopts dedicated relay driver chip, with built-in flyback diode protection, for stronger and more stable driving ability
  • Supports passive and active digital input, with bi-directional optocoupler isolation, built in debouncing algorithm. The relay supports digital input linkage control or toggle control
  • Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection
  • High quality relay, contact rating: ≤10A 250VAC/30VDC
  • Rail-mounted ABS plastic enclosure, easy to install, safe to use
  • 4 LEDs and Network indicators for indicating the MCU status and signal transceiving status

Primary function

Supports reading digital input by sending Modbus RTU protocol commands via Ethernet for relay output control

8-ch Ethernet Relay Module (B), primary function
Supports Multiple Communication Modes, Adopts Modbus Protocol

Supports TCP Server / TCP Client / UDP Mode / UDP Multicast / HTTP / MQTT
Supports Modbus RTU protocol/Modbus TCP protocol

8-ch Ethernet Relay Module (B), supports Modbus RTU protocol/Modbus TCP protocol
Multi Configuration Methods

Supports software and Web Browser Configuration, Obtaining Dynamic IP Via DHCP, connecting to domain name server via DNS protocol

8-ch Ethernet Relay Module (B), supports multi configuration methods
Multi Power Supply Options, Wide Range Power Input

DC Power port: directly uses a power plug for power supply; Screw terminal: DC 7~36V wide range power input; PoE port: IEEE 802.3af PoE compliant

8-ch Ethernet Relay Module (B), supports multi power supply methods
* The external power supply adapter is NOT included by default, it is recommended to purchase 12V power supply if you need it.
Digital Input

Supports passive (dry contact) and active (wet contact) digital input, with bi-directional optocoupler isolation

8-ch Ethernet Relay Module (B), digital input connection demo
Interfaces & Indicators

With Multiple LED Indicators, Easy To Monitor The Operating Status

8-ch Ethernet Relay Module (B), Interfaces & Indicators instruction
RUN Ethernet port indicator, blinking when Ethernet port normally working
STA MCU indicator, blinking when the MCU normally working
TXD TX indicator, lights up when sending data
RXD RX indicator, lights up when receiving data
Ethernet port Green Indicator Lights up when the connection is established
Ethernet Port Yellow Indicator Data activity indicator, blinking when transmitting data

Multiple modes for various automation scenarios

Supports multiple relay control modes, each channel supports independent
control mode setting

8-ch Ethernet Relay Module (B), normal and flash ON / flash OFF relay control mode 8-ch Ethernet Relay Module (B), Linkage and Toggle relay control mode
Relay connection

Contact rating of the onboard relay up to 10A 250VAC/30VDC
Directly controlling 220VAC home appliances, or devices below 30VDC

8-ch Ethernet Relay Module (B), relay connection demo
Enclosure Design

Rail-mounted ABS plastic enclosure, easy to install, safe to use

8-ch Ethernet Relay Module (B), adopts rail-mounted ABS plastic enclosure
Applications
8-ch Ethernet Relay Module (B), applications

Product show
8-ch Ethernet Relay Module (B), product show

Outline dimensions
8-ch Ethernet Relay Module (B), outline dimensions
Resources & Services

* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.

Selection Guide
productModbus POE ETH RelayModbus POE ETH Relay (B)Modbus POE ETH Relay 30CHModbus RTU RelayModbus RTU Relay (B)Modbus RTU Relay (D)Modbus RTU Relay 16CHModbus RTU Relay 32CH
 
Communication parameters
Communication interface Ethernet port (PoE support) RS485 port
Baud rate - 4800，9600，19200，38400，57600，115200，128000，256000 (configurable)
Default communication format - 9600, N, 8, 1
Communications protocol TCP/UDP/MQTT RS485 protocol
Modbus protocol Modbus RTU Protocol or Modbus TCP Protocol Modbus RTU Protocol
Device address Unconfigurable, identify the devices by IP address 1~255 (configurable, supports cascading multiple devices)
control interface
Output control (DO) 8-ch relay 30-ch relay 8-ch relay 16-ch relay 32-ch relay
Contact form 1NO 1NC
Contact rating ≤10A 250VAC/30VDC
DIGITAL INPUT - 8DI, 5~36V, passive / active input (NPN or PNP), built-in bi-directional optocoupler isolation - 8DI, 5~36V, passive / active input (NPN or PNP), built-in bi-directional optocoupler isolation -
Others
Power Supply PoE port, DC 5.5*2.1 power port, or screw terminal DC 5.5*2.1 power port, or screw terminal
Power range 7~36V wide range 5V 7~36V wide range 5V 7~36V wide range
Dimensions 145×90×40mm 175×90×40mm 300×110×60mm 145×90×40mm 175×90×40mm 200×110×60mm 300×110×60mm
Installation Standard DIN 35mm rail mounting, wall mounting

Weight: 0.292 kg

Quick Overview

The power supply of this product is not included, it is recommended to purchase 12V power supply if you need it.

Modbus POE ETH Relay (B) x1

Modbus POE ETH Relay (B)