Parameter 1860 [exclusive] Full — Fanuc

References: Fanuc 0i-D, 0i-F, 31i-B5 Series Connection Manual (B-64643EN) and Parameter Manual (B-64640EN). Always consult your specific machine tool builder's documentation as they may override standard Fanuc recommendations with custom PMC logic or secondary parameters.

Parameter 1860 is a . This means it is not a single global value for the entire machine; instead, a unique value must be entered for every physical and virtual axis present on the CNC system (e.g., X, Y, Z, A, B). Data Type: 2-Word (Double Word / Long Integer) Data Range: 0 to 99999999

If the motor turns a different speed than the screw (e.g., Motor turns 2 times for 1 turn of the screw):

When the procedure completes successfully: fanuc parameter 1860 full

In CNC machining, maintaining accurate position tracking on rotary axes (

When you adjust Parameter 1860, you are not moving the physical limit dog. You are electronically shifting where the control the grid point is.

Some operators shift Z-axis zero (Parameter 1860) slightly positive to gain extra clearance for a large drill or boring bar, though this is dangerous and not recommended for production. This means it is not a single global

The configuration of parameter 1860 involves setting a specific value that determines the level of advanced preview and optimization. The value range for this parameter varies depending on the FANUC control system version and the specific machine model.

Parameter 1860 cannot be looked at in isolation. It relies on a cluster of coordinate, encoder, and feedback parameters to properly govern an axis. Related Parameter System Function Operational Link to 1860 Position Detector Settings ( APC , APZ )

At its core, Parameter 1860 functions as a for a given axis. In many Fanuc systems, this parameter displays a raw value representing the absolute position of the axis as reported by the encoder . Some operators shift Z-axis zero (Parameter 1860) slightly

Unplugging the encoder cable or replacing the motor/encoder resets the stored position.

The machine cuts perfect straight lines but oval arcs. This is often a mismatch between 1860 and the acceleration for the orthogonal axes. Ensure that the 1860 values for X and Y (or X and Z) are identical for circular moves. Uneven acceleration distorts circles into ellipses.

: Manual modification is rare and usually only done during advanced troubleshooting or when migrating parameters from a backup. cti-sumy.com.ua Are you currently troubleshooting a 300 APC Alarm (Ref Position Need Return) or have you recently replaced encoder batteries 64120EN 0i Parameter Manual.pdf

Most manufacturers set this between 20 and 100 (

Detection units (the smallest increment the machine can move).