Fanuc Parameter 1860 Jun 2026

You typically do not manually "type in" a value for this parameter. Instead, the CNC system during specific procedures:

The correct 1860 value for that motor, at that specific alignment, was . fanuc parameter 1860

, which establishes the zero point), Parameter 1860 is typically or updated automatically by the system. Modular Arithmetic You typically do not manually "type in" a

Directly editing 1860 is rare and usually unnecessary because the "Zero Return" procedure updates it automatically. However, if you must change parameters: Modular Arithmetic Directly editing 1860 is rare and

In Fanuc technical lore, Parameter 1860 is often seen as a "ghost" value. It represents the —a raw, digital count that tracks every rotation of the motor even when the power is off. While operators usually focus on Parameter 1815 (which actually sets the home bit), 1860 is the underlying data that makes that home bit meaningful. The Re-Homing Ritual

Fanuc parameter is used within the servo parameters of Fanuc 16/18/21 (and later) controls, specifically relating to backlash compensation .

Like 1860, this bit also indicates if the reference position is set. On many modern FANUC controls (like the 0i or 31i series), 1815 is the primary parameter for setting zero, while 1860 may serve as a status bit or be specific to certain older software versions. When to Modify Parameter 1860 You typically only interact with this parameter during a Reference Position Return (Homing) procedure after a battery replacement or encoder swap: Enable Parameter Write: screen, change PARAMETER WRITE Navigate to Parameter: Go to the System parameters and find 1860. Perform Homing: Manually jog the axis to the physical home position. Change the APZ bit for that axis from 0 to 1.