Processing... Please wait...
Processing... Please wait...
Product was successfully added to your shopping cart.
The correct 1860 value for that motor, at that specific alignment, was .
The cause was a mystery. A power blip? A failing battery in the servo amp? A gremlin? All Cole knew was that Goliath was catatonic.
On these legacy systems:
She didn’t type -211.
Modifying Parameter 1860 on an axis that only features an incremental encoder will cause persistent system errors. fanuc parameter 1860
When setting up a machine tool or recovering from a dead battery:
In summary:
Perform a reference position return on the relevant rotary axis. 4. Associated Parameters
Need more precision CNC insights? Subscribe to our newsletter or contact a certified Fanuc service partner for advanced spindle drive diagnostics. The correct 1860 value for that motor, at
While often factory-set by the Machine Tool Builder (MTB), it typically represents a distance (often in microns or pulses). If you must adjust it, always refer to your specific Fanuc Parameter Manual for the correct unit of measure (e.g., 0.001mm).
Parameter 1860 does not operate in isolation. It forms a ecosystem with several nearby parameters to control absolute positioning and rotary mechanics. 1. The 1860-1862 Triad
: Indicates whether the zero-point (reference position) of the absolute pulse coder has been established. The Initialization Chain
After each M19, place your hand on the spindle nose. A “snappy” but silent lock is ideal. A slow, mushy lock indicates low gain. A high-pitched whine indicates excessive gain. A failing battery in the servo amp
After making changes, you must verify the results. For rotary axis reference point settings:
Where:
A: OEMs often set 1860 for maximum stiffness to guarantee tool change reliability, even at the cost of a slight vibration. You can usually reduce it by 10-15% for smoother operation, but confirm with them first.
The spindle drive did not achieve the commanded orientation within the allowed time (Parameter 1862 sets the timeout). Most often, 1860 is too low (weak gain) or too high (hunting oscillation prevents settling).