Hey all,

Working on a Fanuc 21-T Lathe. Spindle speed override is set to 100%. No gearbox in the machine, serial spindle control (no voltage offsets)

I command M3 S500, I get S873(ish) - no idea why. Checked through the parameters and Gear ratio of spindle to position code is set at 1:1 in parameter 3706

Any ideas here? I did check with a Tachometer and the spindle is indeed at 873rpm. I've called a G97 to cancel G96

Stumped!