The Accuracy (CDD) and Surface Finish (SLE) gages are blank.
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There are two causes of this:
When you are cutting a full slot, the SLE and CDD calculations are blank. If you reduce the Width of Cut (Ae) from the full diameter of the cutter the calculations will reappear.
If you reduce the maximum spindle speed of the machine and the Dashboard, you are reducing the range that the CDD and SLE gages are comparing. In that slower speed range there may be little to no variation in surface finish or accuracy, SLE will go blank and the CDD may be a straight line. They are relative to the speed range being compared. To activate these gages, increase the speed range being compared by increasing the maximum RPM in Machine Details.