Chaz and Hrand tested system with camera to "see" reverse moves.
On 8/31/15 Hrand, Thomas, Matt, Chaz and Johannes met at synchrotron.
Chaz showed video evidence of positioner 13 moving in wrong direction.
Visual observation showed that positioner 13 moves reversely within a large forward move (moves, stalls out, moves back a little, stalls, moves forward until hs)
Pos. 13 was thus discarded as proof.
Matt, Mitsuko, Johannes and Thomas observe 60 cycles of back and forth on every other positioners, do not see any reversals.
Positioner 9 fails while testing. Probing shows that the board does not send correct signals.
Positioner 9 is plugged into a different output and does not move neither (maybe not connected properly).
Board error on Pos. 9 to be investigated. Potentially related to blown resistors on neighboring cobra.
Conclusion
Due to the long time we are already debugging the system, we decided to go back to previous firmware.
Thomas will compile new version of previous firmware because compiled version was not saved.
Another possibility is that the positioners are broken from to heavy calibration moves.