Refer to your machine manual.
This function must be enabled and adapted by the machine manufacturer.

This cycle enables you to program a contour in two dimensions and then transfer it onto a cylindrical surface. Use Cycle 28 to mill guide slots on the cylinder.
Describe the contour in a subprogram that you program with Cycle 14 CONTOUR.
In the subprogram you always describe the contour with the coordinates X and Y, regardless of which rotary axes exist on your machine. This means that the contour description is independent of your machine configuration. The path functions L, CHF, CR, RND and CT are available.
The dimensions in the rotary axis (X coordinates) can be entered as desired either in degrees or in mm (or inches). You can select the desired dimension type in the cycle definition using Q17.