Fanuc Parameter 1860 Work [top] Info

It compares this value against the stored data in Parameter 1860 .

If the stored position in 1860 suggests the machine is outside its travel limits upon startup, you may need to power on while holding "P" and "CAN" (Cancel) to bypass the check and re-home the axis. Step-by-Step: Setting the Reference Position

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? fanuc parameter 1860 work

It typically uses modular arithmetic, meaning the value "wraps around" based on the encoder's pulses per revolution.

When you power on a Fanuc machine equipped with absolute encoders: It compares this value against the stored data

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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. If the value in Parameter 1860 is lost

Because Parameter 1860 is a system-generated value, you do not "type in" a value manually. Instead, you perform a procedure to let the CNC update it: