11

Safety Watchdog Time Zero (V2 CPU)

ABB · PB610 Panel Builder 600 Programming Software

What does 11 mean?

The safety watchdog time value (F_WD_Time) is 0 ms in an AC500 V2 non-safety CPU PM5xx system. This indicates an invalid or unconfigured watchdog timer, critical for maintaining safe PROFIsafe communication.

Repair Steps

  1. 1

    Check the safety PLC configuration for the "F_WD_Time" parameter.

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Verified technical data. Last updated: March 2026
Source: ABB PB610 Panel Builder 600 Programming Software
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