Fanuc Parameter 1860 Full ((top)) -

Users searching for "1860" in the context of or home positions are often actually looking for Parameter 1815 , which is critical for resetting axis reference positions.

Users have reported that if this procedure is interrupted—for example, by skipping the power cycle or entering values out of sequence—the control may fail with an alarm like . If you see this, go back and re-execute the full reset protocol without shortcuts.

: During a reference position establishment sequence (such as after replacing backup batteries or an encoder), the CNC calculates the offset between the encoder's hardware zero grid and the physical machine reference position.

When the procedure completes successfully: fanuc parameter 1860 full

Given these multiple definitions, the specific role of Parameter 1860 in your control should always be verified in the official parameter manual for that exact series and model.

[Absolute PulseCoder] ──(Grid/Reference Link)──> [CNC Calculates Offset] ──> Automatically Writes to Parameter 1860

: The alpha/beta servo motors use internal pulse coders kept alive by lithium batteries when the main breaker is flipped off. Users searching for "1860" in the context of

In Fanuc CNC systems, Parameter 1860 is a read-only axis parameter that stores the current position of the absolute position detector (absolute encoder). It is often referred to as the current position in the absolute detector or the "encoder count". Technical Overview

One of the most practical uses of Parameter 1860 occurs during procedures. This is often required after:

In many FANUC controls, flexible feed gear parameters are and 2085 , not 1860. However, because both sets of parameters relate to how the control interprets motor rotations into linear/rotary motion, some technicians incorrectly reference 1860 as part of the "gear ratio set". : During a reference position establishment sequence (such

In simpler terms, it tells the servo amplifier how quickly to ramp up the motor’s rotational speed (acceleration) or ramp down (deceleration) when the CNC sends a move command while a cutting tool is engaged with the material.

Comprehensive Guide to FANUC Parameter 1860: Reference Position and Absolute Pulse Coder Grid Shift