absolute encoders with dual axis

Hi,

i am wondering how would behave and if its possible to have dual axis with absolute encoders. Lets say you power off machine and one joint of dual axis moves a little, but the other one not (gantry gets skewed). What will happen on powering on machine again? Will the one moved joint go back so that gantry is squared as before?

Thanks for quick response. I am about to order absolute encoder motors for my delta b3 drives, so I wanted to check first.
What about feedback position? Doesn’t it have to be set from encoder? Lets say I have mesa 7i95t with step/dir control and feedback is set from stepgen. This might be an issue, right?
I had delta ethercat servos set up on my table a while back, using encoder feedback. I think it worked nice even with incremental encoders, even though you had to home once after launching linuxcnc, but after that it keeped positions well. After power off, i moved one motor from dual axes and when re-powered, motor quicky rotated back to correct position.

Worked well even with incremental encoders. The position is kept even after reopening linuxcnc. So basically you have to home once after powering up servo drives.

I am currently working on a machine with two X axes 1500x3000mm, what should I do so that with the incremental encoder it can align the bridge if it moves a little in reset mode.
mesa 7i95t
Greetings

you should have homing to index enabled and working, then you have to align gantry to be perfect square, when homed. And if you use velocity mode with PID, then the linuxcnc uses real feedback from motor encoders. So if you disable servos, and move axis by hand, the position is reflected in linuxcnc and you dont have to re-home. Same with gantry. it will square back.

I'm testing tomorrow
Thank you