Defines the allowable error while the axis is in motion . This is usually a large value (e.g., 5000+ units) because lag is expected during high-speed movement.
On many newer Fanuc controls (0i, 31i, 32i), Parameter 1860 is specifically for the reference position. fanuc parameter 1860 full
The machine zeros out, but the "Machine Coordinate" is not zero. Defines the allowable error while the axis is in motion
Absolute encoders rely on a backup battery to "remember" their position when the power is off. If the battery dies, the position is lost. The machine zeros out, but the "Machine Coordinate"
Standard incremental encoders require the machine to execute a manual reference return sequence (homing) at every startup to locate the physical grid pattern. By contrast, systems equipped with FANUC Absolute Pulse Coders (APCs) retain their physical position context via battery-backed memory even when the primary power is disconnected. Fanuc 1815 Parameter Overview | PDF - Scribd