20
PROFIsafe Communication Error (V2 CPU)
ABB · PB610 Panel Builder 600 Programming Software
What does 20 mean?
A PROFIsafe communication error has occurred with an AC500 V2 non-safety CPU PM5xx. This means the safety module cannot correctly exchange telegrams with the safety CPU, leading to a safe state.
Repair Steps
- 1
Restart the affected module.
Verified technical data. Last updated: March 2026
Source: ABB PB610 Panel Builder 600 Programming Software