Fanuc Parameter 1860 Work Jun 2026

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If you are dealing with a machine that has lost its zero position, requires a motor replacement, or shows a position mismatch after a mechanical crash, understanding how Parameter 1860 works is essential for a proper calibration and repair. What is Fanuc Parameter 1860? fanuc parameter 1860 work

Manual editing of Parameter 1860 via standard MDI inputs is . Forcing a manual change often triggers immediate machine power-cycle requirements. It can also result in unintended coordinate jumps, machine overtravel states, or physical turret crashes. ⚙️ Key Technical Dependencies This public link is valid for 7 days

: To change this value, the "Parameter Write Enable" (PWE) must be set to 1 in the Setting Screen Calculating the Shift Can’t copy the link right now

When a CNC machine executes a command to move an axis, the control system needs to know whether the encoder signal returning from the motor or linear scale aligns with the command. Setting Parameter 1860 correctly prevents the system from misinterpreting its own location, which would otherwise result in catastrophic servo alarms or runaway axes. The Core Function of Parameter 1860

This automatic updating is managed by a related setting, Parameter 1815 (specifically bit 0, labeled NRT for the rotary axis). This bit determines whether the reference point values stored in Parameters 1860 and 1861 can be changed by the control during operation . The relationship between Parameter 1860 and the absolute encoder setup is also evident in troubleshooting forums, where technicians often reset Parameters 1860 and 1861 to zero when re-establishing the absolute pulse coder's synchronization after maintenance or a battery change, with the correct values being automatically loaded once the zero-return procedure is complete .