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Houston, we have a problem, i ordered the io port expander (mcp23017) in wrong package so28 instead of ssop28, and the zener diodes is missing from the order, and i missed the i2c port pullup resistors from the design this need a littlebit of workaround, but the outputs are working now (tbd 62783). Tested with 5v and 24v without load, i messed up 1 of the w5100s-evb-pico-s usb port by pulling the whole microusb inside out but now this programmed trough the SWD debug port, the positive side is i do not need to printing debug info in the usb serial port.

I can give it a try, could you please share more details on how you got ethercat installed so i can reproduce your setup?