Parameter 1860 sets the "External Pulse Encoder Diameter" (or Linear Scale Pitch).
It tells the CNC control the physical distance the machine moves for every single pulse (signal) received from the position encoder (the glass scale or rotary encoder on the motor). If this number is wrong, the machine will move the wrong distance (e.g., you command 100mm, but the machine moves 98mm or 102mm). fanuc parameter 1860 work
Parameter 1860 controls the Feed per Revolution (FPR) Override limit. Parameter 1860 sets the "External Pulse Encoder Diameter"
When your G-code program commands a feed rate based on spindle revolutions (e.g., G99 G01 Z-50.0 F0.2), the operator can adjust this feed rate using the Override knob on the control panel (usually 0%, 10%, ..., 150%, 200%). Parameter 1860 controls the Feed per Revolution (FPR)
Parameter 1860 sets the maximum percentage of override the operator can select. Any override selection higher than this parameter’s value will be ignored or clamped to this maximum.
No. Parameter changes require the spindle to be stopped. A moving spindle will cause erratic compensation and potential drive faults.