On Wednesday 30 August 2017 12:28:51 David Berndt wrote: > I was having a backlash issue yesterday that lead me to wondering. How > is backlash taken up? At rapid speed? At max acceleration? More? Less? > What governs how the motion to backlash comp is taken up? > > Kind of a moot point because it turned out my backlash problem was > some loose bolts in a super inaccessible spot under the saddle... Good > times. But still curious about the software side of things.
One of the reasons my Sheldons apron is more easily removed. 12 bolts. 8 for the plate, 4 for the Z drive nut holder and its all laying on the edge of the chip pan. Backlash comp was at one time done instantly, but that led to stalls and lost steps if the lash was more than a thou, so if my memory serves me correctly, backlash takeup is now made at the revelant axis's MAX_VEL and MAX_ACCELERATION settings. I believe since 2.2.0? Lots of lash, as in 10 thou or so, can be easily observed even at creep speed reversals. 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) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
