ProSoft Technology MVI69E-MBTCP

Diagnostics and Troubleshooting MVI69E-MBTCP ♦ CompactLogix Platform
User Manual Modbus TCP/IP Enhanced Communication Module
Page 104 of 150 ProSoft Technology, Inc.
June 28, 2017
6.5 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.
6.5.1 Standard MODBUS Protocol Exception Code Errors
Code
Description
1
Illegal Function Code
2
Illegal Data Address
3
Illegal Data Value
4
Failure in Associated Device
5
Acknowledge
6
Busy, Rejected Message
6.5.2 Module Communication Error Codes
Code
Description
-1
CTS modem control line not set before transmit
-2
Timeout while transmitting message
-11
Timeout waiting for response after request
253
Incorrect slave address in response
254
Incorrect function code in response
255
Invalid CRC/LRC value in response
6.5.3 Command List Entry Errors
Code
Description
-41
Invalid enable code
-42
Internal address > maximum address
-43
Invalid node address (< 0 or > 255)
-44
Count parameter set to 0
-45
Invalid function code
-46
Invalid swap code