If you disconnect the motor from the ball screw, the physical relationship between the encoder and the machine zero changes.
The reference position is established . The system knows exactly where the axis is located based on the absolute encoder data. 2. When Does Parameter 1860 Revert to 0? fanuc parameter 1860 full
A technician may manually change this bit to "0" to force a new home position calibration. 3. How to Set or Reset Parameter 1860 If you disconnect the motor from the ball
Understanding Fanuc Parameter 1860: Absolute Position Detection fanuc parameter 1860 full