Cause : Tolerance for safe operating stop exceeded comes when he actual position has distanced itself further from the target position than the standstill tolerance.

The drive is shut down by the message C01701 "SI Motion: STOP B initiated"

- check whether safety faults are present and if required carry out the appropriate diagnostic routines for the particular faults.
- check whether the standstill tolerance matches the accuracy and control dynamic performance of the axis.
- carry out a POWER ON.

This message can be acknowledged without a POWER ON as follows:

- motion monitoring functions integrated in the drive: via Terminal Module 54F (TM54F) or PROFIsafe
- motion monitoring functions with SINUMERIK: via the machine control panel in acceptance test mode only