We have an Mori Seiki MV40 Milling center Fanuc 15MF, with a Fanuc AC Spindle Drive A06B-6059-H212. The S-code spindle speed commanded does not match the displayed spindle RPM on the drive. When a speed of S1000 is commanded, we see an RPM of approx 717, a difference of about 283. Spindle speed override set at 100%

How can we make the speed match the S-code?

Cheers,
Hanzz