Fanuc Parameter - 1860 Full __hot__

: It tracks the absolute position of each axis. This value is automatically set and updated by the CNC when an axis is zeroed (specifically through Parameter 1815 APZ ).

Set individually for each controlled axis (X, Y, Z, A, B, C) -99,999,999 to +99,999,999 Measurement Unit

(often referred to as APZ ) is a critical configuration setting in Fanuc CNC systems (such as the Series 0i, 16i, 18i, and 31i) that indicates whether the reference position for an absolute pulse coder has been established for a specific axis. fanuc parameter 1860 full

| Machine Type | Typical P1860 (detection units) | Comment | |-----------------------|---------------------------------|---------------------------------| | Machining Center (VMC)| 1000 – 3000 | Standard tolerance range | | Lathe (Turning) | 500 – 1500 | Shorter axis travel | | Large Gantry Router | 5000 – 8000 | High inertia, longer decel zone | | Grinder (precision) | 200 – 500 | Tight tolerance, slow speeds |

| Parameter | Function | |-----------|----------| | 1850 | Grid shift amount (reference position fine offset) | | 1851 | Reference position coarse shift | | 1820 | Number of pulses per motor rotation / detection unit | | 1420 | Rapid traverse speed | | 1421 | FL speed (deceleration speed for ZRN) | | 3003 (bit 5) | ZRN direction selection | : It tracks the absolute position of each axis

Defines the allowable error while the axis is stationary . This is a much tighter value to ensure precision and safety. 4. Troubleshooting SV0410 Alarms

When you encounter issues with a or losing position after power cycles, inspect Parameter 1860 and 1861 together with Parameter 1815.0 (NRT). Never change them arbitrarily—always document the original values first. Incorrect settings here can lead to reference position drift or unexpected coordinate jumps. | Machine Type | Typical P1860 (detection units)

Modifying CNC parameters can have serious consequences. Follow these guidelines to protect both personnel and equipment.

Used for compensation from negative to positive direction. When to use 1860 vs 1851/1852

If you are working with a rotary axis (A type) that uses a rotary scale without revolution data (such as certain Heidenhain or Futaba scales), the logic changes. Here, Parameter 1860 is linked to Bit 1815 (RONx).