On Wednesday 02 January 2019 14:38:55 Gene Heskett wrote: > On Wednesday 02 January 2019 11:07:23 Marius Liebenberg wrote: > > [...] > > > >Thank you Marius. Once again, the conversation has shown me other > > >potential ways to skin this cat. From that, I make progress. > > > > > > > > > > > >It's a pleasure and good luck when you do get around to do it. Not > > > so difficult after all. > > [...] > > I did, and started on the A table. Huge diff in the scale since its a > belt drive as opposed to the sloppy, worm driven backlash in fractions > of a degree and variable because the bull gear isn't concentric, > bigger POS, but now that I have it moving, all I have to do is cut the > wrong gender off the cables, strip and tin it and install a small > Hilti tip on the tinned part, and wash, rinse and repeat the color > order for the other 3 cables. Then disconnect at the disconnects and > take it about 6 feet to ground the cable shielding. > > Then determine the final scale & sign for them. With that in mind, I > also bought a 12" digital caliper, and may see if I can measure the > axis moved distance with one and of it clamped to the bed. Probably > more accurate than screwing with the axis backlash and a 1" travel > dial with a .001" scale. Really precise measurement stuff like > interferometers are well above my pay grade so I don't have. > > So I'll give that method a shot once all axises are moving. Nother > hour or so. > Which turned to 3+. All hooked up, y-a working, x-z not. Supposedly same wire config to all 4 motors. But 2 are stepping if driven slow enough, makeing 3 or 7 steps, then on the last microstep, drops back to were it started from.
What the heck is that a symptom of on a software stepper? It was working great a month ago on somewhat bigger motors. I checked spindle ctrl outs, looks normal. reverse is on pin 15, pwm on 16, but 17 is stuck high, tied to s-enable atm, but I seem to be missing the src for that net. And all the step signals are upside down. They should be narrow down pulses, I think... Found that in the docs and inverted it. Made the reset a couple hundred nano-secs longer. I've not opened the box to see if any of the 2M542's are showing a fault. Nothing for me in the mail today. > Thank you Marius. > > Cheers, Gene Heskett 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> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
