: The CNC determines whether to dynamically update or preserve the zero-point tracking inside 1860 and 1861. When and Why Does Parameter 1860 Cause Issues?
1860 = 1
The primary role of Parameter 1860 is to hold the coordinate value that aligns the machine's physical position with the feedback from the absolute encoder. fanuc parameter 1860 full
Your Fanuc servo system operates on a "Grid" generated by the position feedback device (pulse coder, absolute encoder, or scale). As the motor rotates, the encoder sends pulses. The control identifies a specific pulse as the "Grid Point" – a reproducible position for machine zero. : The CNC determines whether to dynamically update
If you are experiencing vibration or servo alarms during rapid direction changes (like a G01 moving from X to Y), adjusting Parameter 1860 (along with 1620/1622) acts as a "dampener." It forces the axis to hesitate slightly during the transition, eliminating the shock to the ball screw. Your Fanuc servo system operates on a "Grid"
: The alpha/beta servo motors use internal pulse coders kept alive by lithium batteries when the main breaker is flipped off.