Hello YUL725, I could manually active the drives into parameter mode or even operating mode. however after having the power cycled the XM was in operation mode, but the drive s was back to CM mode and the XM showed the drives in PM mode. there was no checking for mode changes in communication on sercos between the two. I found out that Matser communication-sub-device coupling active was not lighted up, which meaned the drive was coupled with the control. actually they was decoupled. Thanks,
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