Thank you for links. There is only one thing - for ctrlX Core-M as Profinet Device you are using Profinet Device App installed on Core and ports XF23 and XF24. I also did it and it is working, the Profinet communication was established and everything was looking good. But is it possible to use ports XF23 and XF24 with CODESYS Profinet Device in PLC Engineering? I was not able to establish the communication because I could not chose those ports in the Network Interface in Ethernet Adapter. In my situation my ctrlX Core needs to be Profinet Master and Profinet Slave at the same time (and also EtherCAT Master, but that's not the problem I think). As I said above, Profinet Slave was working correctly with the installed App. I didn't check Core as the Master at the same time with CODESYS yet, I need to check it. But it will look a bit weird - one connection will be made by Profinet Device App and the second by CODESYS Profinet Controller. Both of this connections should be possible only with CODESYS with separate Ethernet Adapters in my opinion, so that whole Profinet configuration could be made in one software.
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