PROFIsafe Watchdog Timed Out

What does 16153 mean?

The PROFIsafe watchdog timer has expired, meaning the safety I/O module did not receive a valid PROFIsafe telegram within the expected timeframe. This indicates a communication interruption or delay that prevents the safety system from functioning correctly, leading to a safe state.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the error persists and communication appears stable, consider increasing the configured PROFIsafe watchdog time in the safety CPU's parameters, but only after careful consideration of safety implications and confirming no actual communication loss.