However, Parameter 1860 specifically interacts with the (Parameter 1821). In standard configurations (using Semi-Closed Loop control with standard encoders), Parameter 1860 is often set to 2 or calculated based on the Gear Ratio.
Photograph the parameter screen for 1860, 1850, 1851, and 1815 (APC/APZ settings). fanuc parameter 1860 full
Some machine builders (like DMG Mori, Haas, Mazak - though Mazak uses their own parameter numbers) lock certain parameters. You may need to disable parameter protection via a different Keep Relay or data protection key. fanuc parameter 1860 full