7050: Incremental encoder: Illegal AB signal change

Info: Slot
Data type: USINT

Description:
Simultaneous change of the AB signal within a very short timeslot (nanoseconds).

Reaction:
See error number 7030.

Cause/Remedy:
AB-signal disturbance.
See wiring guidelines error number 7030.
Encoder defective.
AC123 plug-in card defective.