Troubleshooting steps
Check PLC diagnostic files verify configuration review system status
Allen-Bradley PLC
40 – I/O configuration
I/O module configuration fault
Details
I/O module configuration fault. Check PLC diagnostics and configuration.
Error typefault
MeaningI/O configuration
Typical causesPLC fault communication fault configuration error
SolutionsCheck PLC diagnostic files verify configuration review system status
Severityhigh
Catalog references
Vendor Information
Allen-BradleyFault Code 40
Utilities
Troubleshooting Steps
Related
Related Allen-Bradley PLC Codes
FAQ
Common questions
Can I clear the fault?
Usually requires power cycle. Check diagnostic files first