Fanuc Parameter 1860 [extra Quality] Full Review

Before adjusting Parameter 1860 for gear ratio issues:

When a FANUC CNC system is powered off, the battery-backed absolute position detector continuously tracks motor rotations. During the initialization or remastering of an axis (controlled primarily via —APZ and APC): FANUC? M6 toolchange position. | Practical Machinist

Select the axis you want to adjust (X, Y, Z, etc.) and input the new value. fanuc parameter 1860 full

✅ The second stage uses a slower speed to ensure the reference point is captured cleanly by the deceleration dog & position coder 1‑revolution signal — preventing overshoot or false reference return.

When setting parameter 1860, users should consider factors such as: Before adjusting Parameter 1860 for gear ratio issues:

$$ 1860 = \frac\textGear Ratio (Motor to Ball Screw) \times \textReference Counter (1821)\textFeed Gear Ratio $$

, cycle power, move to the physical home, and set it back to | Practical Machinist Select the axis you want

). If the value is too small, the machine will "nuisance trip" on minor vibrations. If it is too large, the machine might allow dangerous mechanical drift before stopping. 3. Comparison: 1860 vs. 1828 It is common to confuse Parameter 1860 with Parameter 1828.