On Sunday 05 April 2020 16:36:37 andy pugh wrote: > On Sun, 5 Apr 2020 at 20:25, Gene Heskett <[email protected]> wrote: > > But I don't know that. And w/o a base thread its not readily seen on > > a halscope setup. Its too slow. > > It's fast enough to capture everything that motion does, as motion > runs in the servo thread.
Well, I just traced thru my hal file and discovered the limit3 was actually in the lincurve output circuit, homing wouldn't work with the correction step at home position w/o a slowdown. So it looks as if the turnaround goes straight to the vfd thru a spinx1 ATM. The lincurve is correcting bed wear, up to around 7 thou. With fresh linkbelts in the spindle drive, turnaround with an ER40 in the spindle is damned fast. >From 200 rpms to -200, the overtravel is a red one over 0.54 revolutions. Considering all the weight involved, I am amazed. So it looks as if I need to do some rewrite of that halfile. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
