I actually did connected the inputs in differential mode and for some reason that I can not understand, I am getting some issue with the Z axis that loose it's position toward the +.
I did a test as follows: up and down at 4000mm/min for 15 min and it comes back perfectly. however when I launch my milling code for the part, after few minutes it is already offset by few mm.
on x and y, there is no position loss, only on Z.
the stepper in x and y are setup a 10000 steps per rev and the z to 5000 steps per rev which bring all of them at 1000 value in motor setup. I put acceleration to 350mm/s2 which seems fine.
kernel speed (not sure that it affect anything with the RJ45) is set at 100khz.
any clue on what is going on?
hope we can solve this crazy situation...