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---++ Status description * Johannes was away 3 weeks. * 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. -- Main.JohannesGross - 01 Sep 2015
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Topic revision: r1 - 2015-09-01
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JohannesGross
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