Hi All, I have a problem on a machine that is confusing me (not to difficult to do these days). It is a servo system using mesa 5i23 and 7i33 cards. I have calibrated the x axis and during testing I find that the x axis will go from the home position (using G0 x6000) to the correct distance. Then when I say (G0 x0) it will go to x-70. It has a linear overshoot across the range but just in one direction. Now from that same position if I go (G0 x6000) it will travel exactly 6000mm. So it would seem that the calibration figures are correct. I did the PID tuning and it is pretty close to perfect. Any suggestions where to look?
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