Hello.Now I am working on the SPI communication between 28335 and EtherCAT -- LAN9252. The error reported on TwinCAT is as follows: the board of LAN9252 was welded by myself. Also, does the PORT0 of EtherCAT slave station have to be the input port? I connected PORT1 to my computer, my ESI file was burned successfully, and TwinCAT was able to scan the slave station information.What's the problem?Thanks.