F-device PROFIsafe Watchdog Timed Out (V3 CPU)

What does 28697 mean?

The PROFIsafe watchdog for F-device instance <n> with AC500 V3 non-safety CPU PM56xx has timed out. This indicates that safety communication telegrams are not being received within the expected time, potentially due to communication issues or an incorrectly configured watchdog timer.

• PROFIsafe watchdog timer within the F-device has expired, indicating a communication timeout.
• Intermittent communication dropouts on the PROFIsafe network.
• F-device not acknowledging messages from the V3 CPU within the defined interval.

Click steps to track your progress.

1. 1

   Restart the affected F-device module.

2. 2

   Increase the PROFIsafe watchdog time parameter in the Safety PLC configuration.