Communication Error Codes; Standard Modbus Protocol Exception Code Errors; Module Communication Error Codes; Command List Entry Errors - ProSoft Technology CompactLogix MVI69E-MBS User Manual

MVI69E-MBS ♦ CompactLogix™ Platform
Modbus Serial Enhanced Communication Module
7.7

Communication Error Codes

Note: If an error code is reported that is not listed below, check with the documentation of the Modbus
device(s) on the module's application ports. Modbus devices can produce device-specific error codes.

7.7.1 Standard Modbus Protocol Exception Code Errors

Code
1
2
3
4
5
6

7.7.2 Module Communication Error Codes

Code
-1
-2
-11
253
254
255

7.7.3 Command List Entry Errors

Code
-41
-42
-43
-44
-45
-46
ProSoft Technology, Inc.
Description
Illegal Function Code
Illegal Data Address
Illegal Data Value
Failure in Associated Device
Acknowledge
Busy, Rejected Message
Description
CTS modem control line not set before transmit
Timeout while transmitting message
Timeout waiting for response after request
Incorrect slave address in response
Incorrect function code in response
Invalid CRC/LRC value in response
Description
Invalid enable code
Internal address > maximum address
Invalid node address (< 0 or > 255)
Count parameter set to 0
Invalid function code
Invalid swap code
Diagnostics and Troubleshooting
User Manual
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