The Fanuc message "WN57 OVERRIDE FUNCTION IS ACTIVE" is a PMC (Programmable Machine Control) status message indicating that the machine's signal override feature is currently enabled. This function is primarily used as a debugging tool
If this message appeared suddenly after a crash or battery change, it may be related to a Safety PLC forcing a "slow mode" until a safety fault is cleared or the home position is re-established. fanuc wn57 override function is active