CtrlX IO drops out when DataLogger connected

I am workign on a project which has an X3, SAFEX C12, ctrlX IO bus coupler+IO, then a Kistler Data Logger last on the EtherCat.

I can communicate to the C12 and IO with no problems. However, when I add the Kistler unit (using IO works, datalayer update and download) the EtherCat stops working at the ctrlX IO node. If I just have the Kistler unit by itself it works fine.

What could cause this? What information do I need to provide for someone to help me debug?

Best reply by bclapperton

Hi JHU1XI1

I made a new synchronisation unit but that did not work. I was able to get it to work by putting the Kistler unit as the first device in the EtherCat daisy chain. This worked with or without a separate synchronisation unit.

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