Today I catched the fault which was causing headache for quite a long time already.
There is a machine with one 7i43 P (200k) and one 7i39 and one BLDC motor with encoder. I got reports about unexpected moves of the machine while standing still. Today I saw: count 712171 rawcounts 780979 changing to: 679403 748211 accordingly which is exactly 32768 or 0x8000 while motor is off and dead still. Together with that I saw huge number of errors (dmesg output): hm2/hm2_7i43.0: Encoder 0: quadrature count errorhm2/hm2_7i43.0: Encoder 0: quadrature count errorhm2/hm2_7i43.0: Encoder 0: quadrature count errorhm2/hm2_7i43.0: Encoder 0: quadrature count errorhm2/hm2_7i43.0: Encoder 0: quadrature count errorhm2/hm2_7i43.0: Encoder 0: quadrature count errorhm2/hm2_7i43.0: Encoder 0: quadrature count errorhm2/hm2_7i43.0: Encoder 0: quadrature count errorhm2/hm2_7i43.0: Encoder 0: quadrature count error... I will code some more safety features to prevent dangerous consequencies. I will try different ports - I can swap 50pin headers and swap 7i39 channels. There are 4 of them in total. And this is replaced 7i43 board after first one I diagnosed as working only when warmed and put on the shelf. It had issues with EPP communications as far as I remember. The motherboard is the same. What might be there, anyway? ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
