Fanuc Parameter 1860 Work Jun 2026

: When an absolute encoder is enabled (via Parameter 1815#5), the system uses the value in 1860 to calculate the exact machine coordinate based on the position data stored during power-down. Operational Workflow

Every absolute linear scale or rotary pulse coder tracks position across its full length or rotational cycle. However, when the mechanical component of an axis (such as a ball screw or a casting block) is mated to the servo motor, the feedback device's absolute zero point rarely aligns perfectly with the desired physical machine zero.

Working with machine positions can be dangerous if skipped steps cause physical crashes. Keep these rules in mind:

If you encounter a (Request for Reference Position Return), check parameter 1860. If the APRS bit is 0, the CNC has "forgotten" where it is. You will need to enable Parameter Write (PWE) and perform the homing procedure specified by your machine tool builder to reset it. fanuc parameter 1860 work

The settings you are about to work with affect fundamental machine geometry and motion.

In the realm of Computer Numerical Control (CNC) machining, the precision of axis movement is paramount. FANUC controls, renowned for their robustness, rely on a complex architecture of parameters to define machine behavior. Among these, stands as a cornerstone for the accurate setup of servo motor feedback systems. This parameter is not merely a number; it is the digital "signature" that aligns the CNC’s electronic commands with the physical reality of the motor’s rotation.

: On axes with separate linear scales that do not hold rotation data, Parameter 1815 #6 (NRT) determines if the reference position is updated when coordinates pass the value stored in 1860. Related Parameters for Work Offsets : When an absolute encoder is enabled (via

Parameter 1860 does not work in isolation. It is tightly coupled with:

1851 (Backlash), 1852 (Backlash Acceleration), and 1815 (Absolute Position) are frequently referenced along with 1860. 0;2a; 18;write_to_target_document7;default0;338;0;338;0;60;

Under normal operating conditions, a machine's grid shift settings remain untouched for years. However, standard mechanical maintenance or machine failures will require technicians to recalibrate Parameter 1860: Working with machine positions can be dangerous if

For machines running rigid tapping above 6000 RPM, the role of Parameter 1860 becomes even more critical. At high rotational speeds, even a 1-encoder-pulse error translates into significant angular mismatch during the reversal at hole bottom.

To truly understand how Parameter 1860 works, you need to look at three key areas:

In the parameter screen, locate (APZ bit) or 1860 (depending on the specific control model's logic). Set the relevant bit to "1" for the desired axis. Finalize :

When a FANUC control system is installed on a machine tool, it is typically set up with default parameters that provide a good starting point for most applications. However, to optimize the machine's performance, adjustments to these parameters may be necessary. Parameter 1860 comes into play when the machine's position feedback needs to be scaled.

: When manual setting is required—often for complex configurations or when adding axes—Parameter 1860 is used to assign a specific Slave Number to each axis.