In short, the default setting is a legacy holdover from older controls that lacked processing power. For high-mix, low-volume shops,
. This "shields" or releases the ALM701 alarm, allowing the machine to continue running even if a fan is defective. When to Use "Better" Settings Setting Parameter 8901#0 to is generally only considered "better" as a temporary emergency measure Emergency Production: fanuc parameter 8901 better
Parameter 8901 (sometimes listed as bit parameters 8901.0 through 8901.7) controls the and the Dogless Reference Return behavior on many Fanuc CNC controls, particularly Series 0i, 16i/18i/21i, 30i, and 31i. In short, the default setting is a legacy
Tool nose radius compensation is critical for precision tapers, arcs, and chamfers. When 8901 = 1, TNR comp interacts with the sum of geometry and wear, which means your cutter compensation behaves predictably when you adjust for size. When to Use "Better" Settings Setting Parameter 8901#0
8901 Name: Handling of acceleration/deceleration before interpolation / Look-ahead control settings. Function: This parameter configures the operational mode for the High-Speed Precision Contour Control (HPCC) or the AI Contour Control functions. It dictates how the CNC handles the look-ahead buffer and acceleration/deceleration interpolation.
A DMG Mori CMX 1100V with default 8901=0 produced erratic thread pitch on M6x1.0 holes deeper than 20mm. Pitch error varied by 0.05mm.
