On 8 August 2010 22:25, Jon Elson <[email protected]> wrote: > And that's what I SIMPLY don't understand. I have two servo-controlled > machines.
And I think he has none, if I have been reading right. I am fairly sure this is a stepper machine that is fitted with linear scales. My understanding is that leadscrews, steppers and backlash compensation is working perfectly well, but that it would be useful to feed the linear scale positions into Axis (to be displayed as an accurate indicator of machine position in CNC and manual mode) and potentially also to trip f-error if the scales and stepgens disagree by more than a backlash. Note that as far as I can see Brian has no encoders on the motors. There is no actual motor-pos-fb signal, other than what the stepgen thinks should have happened. -- atp ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
