Fast-stop function

The fast-stop function is comparable to the auto-stop function, except that this function can be used by the PLC. It does not have to be explicitly registered in the feature register. The function is switched on, resulting in the motor being stopped immediately via the emergency acceleration (register R50) by setting bit CB.1 in the control byte. This can be useful for an active motion command that is configured with a small deceleration, for example.