[Etherlab-users] Beckhoff MX

[Sandström Anders Eric]

Hi Everyone,

I'm experiencing some problems with the new Beckhoff MX formfactor in combination with etherlab 1.5.2.

Problem 1:
Every slot on the backplane reports as an ethercat slave (equipped with ESC). However, the SII memory is in the module that you plug into the backplane.
If a slot is empty, this results in that the master assumes a slave is there but fails reading the memory, then tries to read again, (infinite loop).
To overcome this, I made a small patch to the master, adding a command to ignore a slave. However, not sure if this is the best way to handle this (will it for instance affect DC clocks).

Problem 2:
If two base plates are daisy chained only the first one appears. If a hardware scan is issued from a twincat-system both base plates will be visible. After that, if reconnected to etherlab master, both baseplates will also be visible.  After power-cycle only the first baseplate will be visible again.

Anyone experienced similar issues with MX? Suggestions how to solve/workarounds?

Would version 1.6.2 version behave any different related to the above issues?

BTW, sorry for the lack of log files. I do not have access to hardware right now.

Best Regards
Anders Sandström

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