Fanuc Parameter 1860 Full _verified_

While most users focus on standard Cutting Feedrate parameters (like 1420 or 1422), Parameter 1860 controls the . Specifically, it sets the feedrate limit during the time constant adjustment after a speed change.

Working with parameters like 1860 brings you into the very core of the machine's positioning logic. A few final points to keep in mind:

In the most common configurations, Parameter 1860 serves as the first of two storage locations for the absolute position detector's reference position data, with its partner being Parameter 1861. When a FANUC control is equipped with an absolute encoder (using an APC battery backup), the CNC must have a fixed, known point in space to establish its machine coordinate system. Parameters 1860 and 1861 store the two values that define that reference point. fanuc parameter 1860 full

This parameter is typically used during machine setup or maintenance to fine-tune the machine’s zero point without physically moving the limit switches or reference cams. Quick Breakdown of Parameter 1860

Unplugging the encoder cable or replacing the motor/encoder resets the stored position. While most users focus on standard Cutting Feedrate

How to Enable Parameter Write Enable (PWE) on a Fanuc CNC

: A common error associated with this parameter is "Alarm 309: Reference Return Impossible," which typically occurs if you attempt to set the reference position (APZ bit in 1815) before the system has properly recognized the encoder data or if there is a mismatch with Parameter 1860. Homing After Battery Swap A few final points to keep in mind:

In a perfectly functioning machine, this parameter stays at "1" indefinitely. However, certain events will force it to "0," requiring a re-homing procedure:

The following is a general procedure for re-establishing the absolute reference position using Parameters 1815 and 1860/1861:

Here haven't found any official source stating that Fanuc Parameter 1860 is "Full" or related to memory capacity. Fanuc Parameter 1860 is typically related to .

In FANUC CNC systems (such as Series 16i/18i/21i and 0i), Parameter 1860