Fanuc Parameter 1860 Full Upd Jun 2026

Most manufacturers set this between 20 and 100 (

: It acts as the reference for the absolute position in the machine coordinate system.

How to Enable Parameter Write Enable (PWE) on a Fanuc CNC fanuc parameter 1860 full

Without this setting, a machine might display a position of 720° after two full revolutions. With parameter 1860 set, the CNC rounds the coordinate, showing the position relative to the 360-degree circle (e.g., 720° becomes 0° or 360° depending on configuration). Key Related Parameters

: After significant mechanical work that shifts the physical relationship between the motor and the machine's home position. Accessing the Parameter To view or set this parameter, follow these steps: How to Enable Parameter Write Enable (PWE) on a Fanuc CNC Most manufacturers set this between 20 and 100

: If the absolute pulse coder (APC) batteries die, the absolute position is lost. After replacing batteries, you must move the axis to its physical home and toggle Parameter 1815 bit 4 (APZ) to "1". This action updates Parameter 1860 with the new zero-point data. Parameter Backup

| Parameter | Function | Interaction | |-----------|----------|-------------| | | Rapid traverse (G00) | Must be ≥ 1860 in value | | 1850 | Grid shift | Fine reference point offset; 1860 affects grid capture reliability | | 3001 | Reference point deceleration signal (dog length) | If dog is short, 1860 must be lowered | | 1826 | Position coder 1-revolution signal check speed | Must be higher than 1860 to detect reference mark | Key Related Parameters : After significant mechanical work

function to read real-time axis positioning for external monitoring software. Critical Maintenance Procedures

If a motor is uncoupled, a ballscrew slips, or a catastrophic crash occurs, the mechanical zero position changes dramatically. The value historically saved in 1860 becomes structurally invalid, throwing position deviation limits or soft overtravel errors. Step-by-Step Guide: Resetting the Reference System

This distinction is critical when retrofitting older axes or working with unconventional feedback scales. If you are using a scale that does not provide revolution data, the manual suggests setting NRT = 1 to freeze parameters 1860/1861.

Note: The CNC will immediately generate a non-critical . This is normal and serves as a safety warning. Step 3: Navigate to Parameter 1860 Press the SYSTEM function key.