On 10/12/2016 04:15 AM, Peter C. Wallace wrote: ... snip > Another diagnostic would be to halscope the index pulse itself assuming you > can move slowly enough to detect it in the servo thread, index pulses are > often 1 encoder pitch wide (1/2048 in your case) so you would have to move > more slowly than 2s seconds per turn to reliably detect it at a 1 KHz servo > thread ... snip
I recently had Z axis homing problems on my HNC lathe. I watched the encoder signals with HALscope while turning the screw forward and back by hand. I lost position over a few cycles. It turned out to be a bad capacitor that was causing the encoder voltage regulator to randomly shutdown. I removed the capacitor and function was restored. So, your problem may be like this, where the fault may not be consistent or obvious. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ ------------------------------------------------------------------------------ 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
