Tool Setter M Codes! For Centurion 5, and probably 6 and 7.
Ever since I got my Partner 1D with a Centurion 5 controller I've hated the way you have to set tools and part Z zero, it never made sense and if the top of your part gets removed you're screwed if you have to re-set a tool. I come from Fanuc machines with M codes to set tool length and part height.