Fanuc Parameter 1860 [verified] [ Best Pick ]

| Parameter | Function | |-----------|----------| | 1850 | Spindle orientation shift amount (offset) – static zero-point | | | Orientation gain (stiffness) – dynamic response | | 1861 | Orientation acceleration/deceleration time constant | | 1862 | Orientation completion width (in position check) |

| Problem | Likely Cause | Solution | |---------|--------------|----------| | Alarm PS0090 after G28 | 1860 too high → missed marker pulse | Reduce 1860 by 50% and retest. | | Intermittent home position shift (5-20 microns) | 1860 borderline high + electrical noise | Lower 1860; also check encoder cable shielding. | | Axis overtravels immediately after dog detection | 1860 higher than rapid speed (1420) | Set 1860 < 1420. | | Rotary axis homes inconsistently | 1860 too high for rotary inertia | Reduce 1860; consider increasing deceleration time (Parameter 1620). | | Homing takes >5 seconds | 1860 too low | Increase 1860 (test stability first). | fanuc parameter 1860