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5pcs Dual Modbus-Rtu 2-way Relay Module Switch Input and Output RS485/TTL Communication Controller

5pcs Dual Modbus-Rtu 2-way Relay Module Switch Input and Output RS485/TTL Communication Controller

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Description:

 

LC 2 channel Modbus relay module equipped with mature and stable 8-bit MCU and RS485 level communication chip, adopt standard MODBUS RTU format RS485 communication protocol. It can realize 2bit input signal detection and 2-bit relay output. It can be used for digital detection or power control occasions.

 

Features:

 

1. Support Modbus RTU protocol

2. Support RS485/TTL UART interface

3. Output indicator in multi-mode

4. The address can be set

5. Support input reverse connection protection

6. Relay switch output

7. Support parameter memory function

 

Parameters:

 

1. Item name: Dual Modbus Relay Module 

2. Work voltage: DC 7V~24V

3. Baud rate: 4800/9600/19600bps(default 9600bps)

4. Optocoupler input signal: DC 3.3V~30V

5. Set address: 1~255

6. Relay control mode: ON/OFF, Delay_ON, Delay_OFF mode

7. Delay time: 0~6553.5s 

8. Load: AC 250V 10A or DC 28V 10A

9. Protocol: Modbus RTU

10. Interface: RS485/TTL UART

11. Control channel: 2channel

12. Operating Temperature: -20?ƒ~85??/span>

13. Operating Humidity: 5%~95%RH

14. Module Size: 85 x 49 x 19mm

 

Modbus RTU :

 

1. Suppose the device address is 0xFF so return 00 10 00 00 00 01 02 00 FF EB 80 and the 9th byte is device address.

2. Turn ON CH_1 Relay (Normal Mode):

     Send:   FF 05 00 00 FF 00 99 E4

     Return: FF 05 00 00 FF 00 99 E4

Note_1: The 3rd and 4th byte are relay addresses. So it can be 0x0000, 0x0001, 0x0002, 0x0003.

Note_2: The 5th and 6th byte are relay data. 0xFF00 means turn ON relay and 0x0000 means turn OFF relay.

3. Turn OFF CH_1 Relay(Normal Mode):

     Send:   FF 05 00 00 00 00 D8 14

     Return: FF 05 00 00 00 00 D8 14

4. Turn ON CH_2 Relay(Normal Mode):

     Send:   FF 05 00 01 FF 00 C8 24

     Return: FF 05 00 01 FF 00 C8 24

5. Turn OFF CH_2 Relay(Normal Mode):

     Send:   FF 05 00 01 00 00 89 D4

     Return: FF 05 00 01 00 00 89 D4

6. Turn ON All relays: