Fanuc Parameter 1860 Work Exclusive Direct

When you power on a Fanuc machine equipped with absolute encoders:

In Fanuc CNC systems, Parameter 1860 acts as the machine's memory for when using absolute pulse coders (APC). Unlike incremental encoders, which must hit a "limit switch" or "dog" every time the machine starts up, absolute encoders always know their position.

The CNC reads the current value from the encoder. fanuc parameter 1860 work

Master the Fanuc Zero Return Procedure in 5 Steps - CNCFixtech

If the system detects a discrepancy between the physical position and the value in 1860, it may trigger a "Request for Reference Position Return". How Parameter 1860 Works During Startup When you power on a Fanuc machine equipped

Understanding Fanuc Parameter 1860: Reference Position and Absolute Encoders

It compares this value against the stored data in Parameter 1860 . Master the Fanuc Zero Return Procedure in 5

It is a critical, read-only system parameter used by the CNC to track exactly where an axis is relative to its reference (home) position. If the value in Parameter 1860 is lost or incorrect—often due to a battery failure—the machine will lose its "sense" of where it is, leading to homing alarms. What is the Function of Parameter 1860?

If they match within a certain tolerance, the machine "remembers" its position immediately without requiring a manual zero return. Troubleshooting Common 1860 Issues

These indicate that the absolute position data has been lost.