Made some progress forward... Z is moving although I cant get the video to download.

Also got Y going for initial tuning, here is a video jogging at ~1600 inch/min then I have a question for all the servo tuning experts out there.


Ok, so trying to get that Y axis tuned through the CSMIO config it seems I can get either no overshoot and no oscillation but I never actually get to the number I requested. Or by changing the I value just 1 I get slight overshoot and oscillation. I am tuning at 2000 inch per min max rate and an acceleration set to 500inch/sec/sec.

Right now my numbers are, with these numbers there is no overshoot and the movement is very crisp with no oscillation at 0 speed. But I am always 0.003 of an inch from the requested number. (i.e. if I ask it to go to 8 I get 7.997). Error in this setup ends up around 10 to 12 counts
P - 800
I - 4
D - 10

If I change the I to 5 leaving the P and D the same, I get slight overshoot, but also get oscillation around the number, around 100 counts + and - . Also at 0 speed I am getting oscillation around 30 counts + and -. The CSMIO config dialog wont let me put a decimal into the value otherwise I think 4.5 could be the magic number.

Any thoughts? I think not getting to the requested number wont work in real machining? Also overshoot or oscillation could have some pretty negative impact. Kinda got to the point of pulling my hair out yesterday after around 3 hours of messing with it so I decided to move on for now. Oh and a BTW, the autotuning feature did not work at all. The numbers it left me with gave oscillations around 1 full inch of movement. I am happy with the crispness of the response on how I have it tuned just very odd I cant get to the number I asked for.

Thanks