ABB FSPS-21 User Manual page 145

Later the PPO message data can be found in ABB_Drive_DB.
21. In PLC Safety Administration, configure F-runtime group cycle time, warn and maximum
cycle time limits. If maximum limit is exceeded, PLC will go to safe state.
22. If you do not have a complete safety program, you must at least implement
acknowledgement for reintegration according to application requirements to be able to
acknowledge the STO.
As an example, automatic acknowledgement for reintegration can be implemented in
the following way:
PROFIsafe 145