Fanuc Alarm 91: REFERENCE POSITION RETURN ERROR
Fanus Control Model: 16/18/21, 16i/18i/21i
Alarm Description
An error occurred during manual or automatic reference position return.
Help the CNC Community: How Did You Fix It?
If you have encountered this Fanuc 91 REFERENCE POSITION RETURN ERROR error code before or know a proven troubleshooting step to resolve it, please share your solution in the comments below