Unlike incremental encoders, which require a "homing" sequence every time you turn on the machine, absolute encoders use this parameter to remember their last known position.
PARAMETER (REFERENCE) 1860 AXIS X Y Z B DATA 300 300 300 2000 fanuc parameter 1860
: If the 3V or 6V backup batteries on the servo amplifier die while the CNC is powered off, the absolute encoder loses its multi-turn memory. When power is restored, the machine generates a 300 APC Alarm: Need ZRN (Zero Return Required). Re-establishing the home position recalculates and rewrites Parameter 1860. High 1860 on a heavy axis may cause
Do not exceed the maximum allowable feedrate of the axis motor/drive. Check motor torque curves. High 1860 on a heavy axis may cause following error (alarm PS0410). If you're interested
When fine-tuning the exact "zero" point of the machine for accuracy. ⚠️ Common Alarms Related to 1860
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