Fanuc Parameter 8901 Better !!top!! Direct

There are two primary settings for Parameter 8901:

Setting 8901 = 3 is invalid (3 decimal = binary 11 → bits 0 and 1 both 1 → selects axis 4). fanuc parameter 8901 better

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. There are two primary settings for Parameter 8901: