Greetings; I have the gui sorted, looks good. But my exercise code I'm using should have a fixed starting point for each poke at the tapping, but I see in the backplot, it is very slowly drifting to the left. This is a stepper machine, so it has no idea where the machine actually is. So where is this drift in the backplot? Its not hugely serious at this point, but the fact that its doing it is a concern. I'm in the house, listening to the distant weather, but I'll repeat this tomorrow with a dial on the carriage to see if its physically moving its stop point where its waiting for an index pulse while running a loooong string of g33.1's.
Another thing is just how fast the oveshoot goes up with increasing spindle revs. I may have to play with the vfd some, and adjust the limit3 I have in the path to the vfd to slow that down, trying to make a true 4 quadrant control. At 100 rpms, and an empty ER-42 mounted, overtravel is .28 turns, distance is .01390". Raise the revs to about 350, and its over 2 turns and .110". I hate to think what it would do with the 8" 4 jaw mounted, thats a 40 lb flywheel. ==== I found some cable for the mill on ebay and bought a 40 foot hank of it, s/b here by Friday evening. -- 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-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
