there are 500 pluses per mm on the scales (5µm). testet with dial gauge and hand wheel.
i mailed with cs labs, and the setting in the index frame is only for the indexing. i was thinking, the setting in the index menu is important for the pid tuning/servo drive..
the only one setting for scales is in the mach motor tuning and setup menu.
i reversed the scales in den the cs labs menu, but i think, i can`t reverse the servo in the mach3 settings, so i reverse today the analog servoe input for PID tuning.