T04-C31 troubleshooting answers
1 question with answers cited from the manufacturer manuals.
- 0ControlLogix 5570 T04:C31: JSR/RET parameter count mismatch, what to check?
A ControlLogix or CompactLogix controller displays a Major Fault Type 4 Code 31 when a JSR instruction attempts to call a subroutine (SBR/RET) with fewer parameters than the subroutine expects. This fault occurs when the…