Fanuc Parameter 1860 Full Better Jun 2026

Working with parameters like 1860 brings you into the very core of the machine's positioning logic. A few final points to keep in mind:

The parameter 1860 for the specific axis (usually Axis 4 or 5) will be shown. Enter 360.000 (or 360000 if your unit requires it). Restart/Power Down:

Press the SYSTEM hard key, then the PARAM soft key. Type 1860 and press NO. SRH .

Ensure the encoder is properly homed before assuming the parameter is wrong. fanuc parameter 1860 full

What are the stored in parameters 1860 and 1825?

Press the soft key to view the system parameters page.

FANUC Parameter 1860 embodies the complexity and power of CNC parameters: its function is entirely context-dependent. On modern 16i/18i systems, it stores rotary axis reference points. On 0i-MC controls, it governs acceleration for backlash compensation. On older 18MC machines, it may represent a gear ratio component. And during absolute encoder resets, it functions as a temporary placeholder cleared to zero, then automatically rewritten. Working with parameters like 1860 brings you into

If issues arise after setting parameter 1860, consider the following:

If you need to view or set parameters like flexible feed gear (2084/2085) and you cannot see them on the standard parameter pages, first verify that . This enables the SV parameter display screen where these values are shown.

On vertical axes (like the Z-axis), a built-in mechanical brake keeps the axis from falling when power is removed. If this brake drags or fails to release fully when the axis moves, it creates immense friction during rapid traverse, causing an excess error alarm. 3. Low Servo Amplifier Voltage or Failing Drive Restart/Power Down: Press the SYSTEM hard key, then

is primarily used to set the backlash acceleration amount in specific control series like the Fanuc 15i . In other common series (such as 16i, 18i, and 21i), this function is often mapped to parameter 2048 instead. Key Details for Parameter 1860 (Backlash Acceleration)

The truth is that . Unlike a simple ON/OFF switch, its behavior changes depending on which optional functions are active on your specific controller. This guide serves as a complete reference for Parameter 1860, covering its various functions, how to set it, and how to troubleshoot it across different FANUC Series (0i, 16i, 18i, 21i, 30i).

: It associates the reference position directly with the internal hardware counter value of the absolute position detector. Why You Should Not Edit Parameter 1860 Manually