I checked the power supply for the servos and the drives and they were both good.
I also checked for lost steps (ie - ran the program until it jumped all over the place then went to almost to zero on every axis, then to zero). There were no lost steps.
I then went to the diagnostics screen on Mach 2 and noticed that the machine started jumping when the "buffer load" was at 100% for more than a second or so. Hmmm....very interesting. It was repeatable and so I now am quite certain this is the problem. So, after all this Hu was pretty darn close to figuring out the problem!
I am a VERY happy camper now. I just need to upgrade that PC and I should be good to go. WOO HOO!!
It would have been nice if the buffer load was mentioned somewhere in the docs for Mach 2. There's everything else in there.
Thank you Hu very much for helping! |