Fanuc Parameter 1860 stores the current position data of the absolute pulse coder (APC) for each axis.
In Fanuc systems equipped with absolute encoders, the control must maintain a constant "knowledge" of where each axis is located, even after the power is cycled. While Parameter 1815 defines the status of the detector (such as whether it is enabled or if the home position is set), Parameter 1860 actually holds the numerical position data that corresponds to the mechanical position of the machine. Function: Stores the absolute position data for each axis. fanuc parameter 1860
: When a motor or cable is replaced, the relationship between the motor's zero point and the machine's physical home may change. Technicians must manually move the axis to the physical home and reset the reference point to update Parameter 1860. Reference Point Shift Fanuc Parameter 1860 stores the current position data
In the context of Fanuc CNC systems, Parameter 1860 specifically defines the allowable error (tolerance) for the absolute position detector. It acts as a safety threshold that the system uses to verify the integrity of the absolute position data reported by the encoder. Key Functions & Characteristics Leave at OEM default unless you have a
What is Parameter 1860?
Fanuc Parameter 1860 defines the maximum allowable position deviation limit (following error) for each axis during motion, acting as a safeguard against mechanical issues or heavy loading [1]. If deviation exceeds this setting, the control triggers a 410/411 Position Deviation alarm, which can sometimes be resolved by adjusting the value through the PARAM screen after enabling parameter write [1]. To manage this, you can learn more from the official Fanuc America overview.