From one of John's post...
www.linuxcnc.org/docview/html/common_mac...r.html#sub:Feed-Rate
1. If any of XYZ are moving, F is in units per minute in the XYZ cartesian system, and all other axes (UVWABC) move so as to start and stop in coordinated fashion
2. Otherwise, if any of UVW are moving, F is in units per minute in the UVW cartesian system, and all other axes (ABC) move so as to start and stop in coordinated fashion
3. Otherwise, the move is pure rotary motion and the F word is in rotary units in the ABC “pseudo-cartesian” system.
So could you set the proper rotary feed rate for the rotary only moves and revert to the proper linear feed rate for combined moves?
Rick G