Connection Shutdown Discrepancy Error - Input Group 1
Beckhoff · TwinSAFE Logic FB
What does FB CONNECTION SHUTDOWN Bit 0 mean?
A discrepancy has been detected in input group 1 for the FB CONNECTION SHUTDOWN. This means the redundant input signals ('DeactivateX TRUE') are not in agreement, which prevents the Connection Shutdown function from reliably commanding a SHUTDOWN state or detecting it from the assigned Connection. This poses a risk to controlled deactivation and will stop the machine.
Complete Troubleshooting Guide
- 1
Inspect the wiring for input group 1, ensuring both channels providing the 'DeactivateX TRUE' signals are correctly connected, free from damage, and properly terminated.
- 2
Verify the functionality of the input devices providing the 'DeactivateX TRUE' signals; ensure their redundant outputs are synchronized.
- 3
Review the discrepancy time parameter for input group 1 in the FB CONNECTION SHUTDOWN configuration; adjust if application-specific timing requires it.
- 4
Monitor the individual input channels for group 1 in real-time using diagnostics to identify which channel is deviating or delayed.