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Every CNC machine leaves the factory with a printed parameter data sheet inside the electrical cabinet. Always cross-reference your current 1860 values with this original document.
0 (Disabled, relying purely on standard parameter 1851 backlash compensation) 20 to 70 (With 50 being a standard baseline) Related Parameters
Specifically, in modern FANUC controls utilizing serial encoders, Parameter 1860 is often designated as or relates to the initialization of the absolute pulse coder. Key Functions of Parameter 1860:
When the FANUC control boots up, it reads to see what kind of hardware is attached. It then checks Parameter 1815 Bit 5 to see if it should process that hardware as an absolute system. If both match, it checks Parameter 1815 Bit 4 to verify if the saved position coordinates are valid or if the machine requires a zero-point calibration. Common Scenarios Requiring Parameter 1860 Adjustments
Immediately reduce 1860 by 30-40%. If the buzz disappears, re-tune from a lower baseline.
Increase 1860 in increments of and repeat until slight overshoot appears.
Adjust parameter 1860 incrementally, observing axis behavior and machining results. Consult servo tuning software such as FANUC Servo Guide for systematic optimization.
After changing parameter 1860 in applications where it affects reference point or encoder behavior, always power cycle the control and verify correct operation before returning to production.
Press the softkey or enter 1 and press INPUT . The CNC will emit a harmless PWE alarm indicating parameters are unlocked. Step 2: Clear the Old Home Position
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. FANUC? M6 toolchange position. | Practical Machinist
: If an axis shears a coupling or slips mechanically, the physical location no longer matches the encoder value. Correcting this requires resetting the home position, changing the value in 1860. Step-by-Step: The Correct Way to Change Axis Homing
If issues arise with FANUC parameter 1860, here are some troubleshooting steps:
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