4 Channel Relay Module Programmable w/ Opto Isolated RS485 STM8S103F3

Specifications:

• 4 relays output
• STM8S103F3 Programmable Microcontroller 
• 4 Optocoupler isolation
• 4 relay closed LED indicating lamp
• 4 group input connections
• 1 group RS485 communication connection.
• 1 power lights
• 1 user LED lamp
• Reset Key
• DC 12V Input Jack
• One SWIM download interface - (STLINK-V2 download)

Modbus RTU command
 
Baud Rate: 9600 8 NONE 1
 
 
/ ************************************************* ****************** /
Setting address is: 01
00 06 40 00 00 01 5c 1b
Setting address is: 02
00 06 40 00 00 02 1c 1a
Read address
00 03 40 00 00 01 90 1b
/ ************************************************* ****************** /
Read the software version
00 03 00 04 00 01 c4 1a // [month] broadcast read (only by one device to address all practical, easy to test)
0,003,000,800,010,419 [years] // broadcast read (only by one device to address all practical, easy to test)
00 03 00 10 00 01 84 1e [when] // sub broadcast read (only by one device to address all practical, easy to test)
 
Read the hardware version (PCB version)
0,003,002,000,018,411 // broadcast read (only by one device to address all practical, easy to test)
/ ************************************************* ****************** /
[1 Address]
 
Open relay 1
01 05 00 01 01 00 9d 9a
Relay 1 closed
01 05 00 01 00 00 9c 0a
 
No. 2 relay open
01 05 00 02 01 00 6d 9a
No. 2 relay closed
01 05 00 02 00 00 6c 0a
 
3 relay open
01 05 00 03 01 00 3c 5a
3 Relay Off
01 05 00 03 00 00 3d ca
 
No. 4 relay open
01 05 00 04 01 00 8d 9b
4 Relay Off
01 05 00 04 00 00 8c 0b
Quanmie
01 05 00 ff 00 00 fd fa
All light
01 05 00 ff ff ff fc 4a
 
[2 Address]
Open relay 1
02 05 00 01 01 00 9d a9
Relay 1 closed
02 05 00 01 00 00 9c 39
 
No. 2 relay open
02 05 00 02 01 00 6d a9
No. 2 relay closed
02 05 00 02 00 00 6c 39
 
3 relay open
02 05 00 03 01 00 3c 69
3 Relay Off
02 05 00 03 00 00 3d f9
 
No. 4 relay open
02 05 00 04 01 00 8d a8
4 Relay Off
02 05 00 04 00 00 8c 38
Quanmie
02 05 00 ff 00 00 fd c9
All light
02 05 00 ff ff ff fc 79
/ ************************************************* ********************* /
No. 1 relay 1 channel status
01 01 00 01 00 04 6c 09
 
No. 1 Relay 2 channel status
01 01 00 02 00 04 9c 09
 
Relay 1 3 Channel status
01 01 00 03 00 04 CD C9
 
4 channel relay 1 status
01 01 00 04 00 04 7C 08
/ ************************************************* ******************** /
Read the status of all input interfaces
01 02 00 00 00 00 78 0a