Fanuc Parameter 1860 Full ((hot))

How does FANUC set the backlash compensation parameters on t

Reference position updating is performed . When the machine coordinate values cross the threshold defined in Parameter 1860, the system automatically runs a reference position update using either the 0-degree marker or the rounding value specified in Parameter 1260 (typically 360 degrees).

Parameter 1860 and Parameter 1825 (position loop gain) work in tandem. If you increase 1825 for higher stiffness, you may need to decrease 1860 to avoid instability. Conversely, a low 1825 with a very low 1860 will cause overshoot. fanuc parameter 1860 full

This is the most serious consequence. You calculated the shift in the wrong direction.

Most machines will not run a 10 ms 1860 due to mechanical resonance. Multiply by 3–5x for safety (e.g., 40–60 ms). How does FANUC set the backlash compensation parameters

The formula used to determine Parameter 1860 for full-closed loops is:

In such cases, the safest approach is to contact the machine tool builder directly and obtain their original parameter list. Changing 1860 without knowing its specific function can lead to axis mispositioning or unexpected servo behavior. If you increase 1825 for higher stiffness, you

The primary function of parameter 1860 is to control the advanced preview function, which enables the CNC machine to predict and optimize the machining process. This feature allows the machine to:

Increase 1860 by 10–20% increments. Also verify that the motor torque limit (parameter 1640/1641) is adequate.