Modbus2 Error Codes - Allen-Bradley Micro800 General Instructions Manual

Chapter 9
Communication instructions
Error code
3
20
21
22
33
54
55
217
129
130
131
132
133
134
135
136
137
255
208
Structured Text (ST)

Modbus2 error codes

The following table describes error codes for the MSG_MODBUS2 function
block.
Error description
The value of the TriggerType has been changed from 2 - 255.
The local communication driver is incompatible with the MSG instruction.
A local channel configuration parameter error exists.
The Target or Local Bridge address is higher than the maximum node address.
A bad MSG file parameter exists.
A lost modem.
The message timed out in the local processor. A link layer timeout.
The user cancelled the message.
An illegal function.
An illegal data address.
An illegal data value.
A slave device failure.
Acknowledge.
The slave device is busy.
Negative acknowledge.
A memory parity error.
A non-standard reply.
The channel has been shut down.
Rockwell Automation Publication 2080-RM001D-EN-E - February 2015