ICPDAS GW-7238D User Manual page 46

Start or Stop sending J1939 output message
Using the Modbus command as below:
FC6 Write single register (4xxxx) for AO
[Request] (Request by Modbus master device)
Byte 0:
Byte 1:
Byte 2-3:
Byte 4-5:
Byte 6-7
[Response] (Response from the GW-7238D)
Byte 0:
Byte 1:
Byte 2-3:
Byte 4-5:
Byte 6-7
Example: Start sending J1939 output message
In the address 42009, write the value in 0x00.
[Request Command] (Byte0, Byte1... Byten) (Hex)
01 06 07 D8 00
GW-7238D responds the register value.
[Response] (Byte0, Byte1... Byten) (Hex)
01 06 07 D8 00
Example: Stop sending J1939 output message
In the address 42009, write the value in 0x01.
[Request Command] (Byte0, Byte1... Byten) (Hex)
01 06 07 D8 00
GW-7238D responds the register value.
[Response] (Byte0, Byte1... Byten) (Hex)
01 06 07 D8 00
GW-7238D J1939 to MBTCP Server / MBRTU Slave Gateway User's Manual (Ver.1.0, Nov. 2011) --- 46
Net ID (Station number)
FC=06 (Hex)
Reference number
Register value
Value for the CRC calculation
Net ID (Station number)
FC=06 (Hex)
Reference number
Register value
Value for the CRC calculation
00 08 85
00 08 85
01 C9 45
01 C9 45