F-device CRC1-Fault (V3 CPU)

What does 28691 mean?

A CRC1-Fault has occurred in F-device instance <n> for AC500 V3 non-safety CPU PM56xx. This indicates a data integrity error during PROFIsafe communication, suggesting corruption of safety-critical data telegrams.

• Cyclic Redundancy Check (CRC) error detected during F-device data transmission (CRC1).
• Data corruption during PROFIsafe communication.
• Faulty communication hardware or cable integrity issue.

Click steps to track your progress.

1. 1

   Check the Safety PLC configuration for the F-device instance <n>.

2. 2

   Restart the Safety PLC module.