ICP DAS USA GW-7228 User Manual page 31

Table 4-2: Input Register Function Table
Input Register Offset
(Byte)
0,1
2,3
...
3070, 3071
Table 4-3: Output Register Function Table
Output Register Offset
(Byte)
0,1
2,3
...
3070, 3071
The following register address is defined to start or stop the
transmission of output J1939 messages in the GW-7228. It can use the
Modbus functions code 6 (06 Hex) and 16 (10 Hex) to change the register.
Table 4-4: Start/Stop the transmission register of J1939 output message
Register
42009(Dec)
7D8(Hex)
The following register address is defined the error status in the GW-
7228. It can use the Modbus functions code 4 (04 Hex) to read the register.
Table 4-5: Registry Error Code of the GW-7228
Register
31807(Dec)
70E(Hex)
GW-7228 J1939/Modbus RTU Slave Gateway User's Manual (Ver 1.3, Apr/2011) ------------- 31
Modbus Output Register
If Value=0, Start the transmission of output
J1939 message.
If Value=1, Stop the transmission of output
J1939 message.
Description
00 No Error
01 Can't Claim Address in J1939 Network
02 CAN Bus-Off
04 CAN Bus Transmission Fail
Modbus Input Register
(Word)
30001(LSB/MSB)
30002(LSB/MSB)
...
31536(LSB/MSB)
(Word)
40001(LSB/MSB)
40002(LSB/MSB)
...
41536(LSB/MSB)
Description