FB OPMODE Discrepancy Monitoring Error
Beckhoff · TwinSAFE Logic FB
What does FB OPMODE Bit 0 mean?
A discrepancy has been detected in the input signals monitored by the FB OPMODE function block. This usually means that dual-channel inputs (e.g., OpInX) are not switching or remaining in sync as expected, indicating a potential sensor failure, wiring issue, or timing problem. This will cause the FB to switch to an ERROR state, preventing mode selection.
Complete Troubleshooting Guide
- 1
Check the physical wiring and connections for all input channels (OpInX) to ensure integrity and correct routing.
- 2
Verify the functionality of the sensors or input devices connected to the OpInX channels for consistent and simultaneous operation.
- 3
Review the discrepancy time parameter for the FB OPMODE in the TwinSAFE configuration; adjust if the application legitimately has different timing requirements.
- 4
Monitor the individual input signals in real-time using diagnostic tools to observe their switching behavior and identify any channels out of sync.