Fanuc Parameter 1860 Work -

If the backup battery for the Absolute Pulse Coder (APC) dies while the machine is off, the absolute position data is lost.

Move the cursor to the target axis block under parameter 1860. Input the newly calculated long integer and press .

When changing a servo motor, the value in 1860 must match the encoder's required pulses to ensure the machine accurately recalls its position after a power-off.

Repeat the 4-step configuration sequence detailed above. Avoid manually forcing numbers into Parameter 1860. fanuc parameter 1860 work

: Input the calculated offset into 1860 (often 0 if you are directly on the witness mark). Set 1815 to 1 : Change 1815 APZ back to 1.

Step-by-Step Procedure: Changing & Calibrating Reference Parameters FANUC? M6 toolchange position. - Practical Machinist

: If you change 1860, your machine soft limits (stored in parameter 1320/1321) might need to be adjusted, or the machine could crash into its own mechanical limits. Step-by-Step Procedure: Using 1860 (Absolute Encoder Setup) If the backup battery for the Absolute Pulse

If the machine is robust and you need faster performance, you may decrease the value, but do so carefully and monitor servo temperature.

Show you where to find the .

In Fanuc CNC systems, Parameter 1860 acts as the machine's memory for when using absolute pulse coders (APC). Unlike incremental encoders, which must hit a "limit switch" or "dog" every time the machine starts up, absolute encoders always know their position. When changing a servo motor, the value in

: Cycle the power to the machine entirely (turn off, wait 10 seconds, turn on). Verify : Check that the machine position displays correctly. Conclusion

: Locate the specific axis (e.g., Z-axis) you need to set.

Controls whether the system treats the axis as absolute ( APC ) and verifies if home has been successfully established ( APZ ). Grid Shift

Re-tensioning, replacing, or repairing ball screws changes the mechanical relationship between the motor turns and physical tool travel.

In Fanuc CNC systems, precision and positioning accuracy are controlled by thousands of internal parameters. Among these, plays a critical role in machines equipped with absolute encoders (like alpha or beta series pulse coders).