TX RX pinout on a Y&H 3kw hybrid inverter

I’m using an EW11 to connect to a Y&H 3kW inverter, but I haven’t had any success so far. I suspect I might be using the wrong pins on the RJ45 connector. Does anyone have experience with this inverter and know the correct TX, RX, and GND pinouts? with the aim to use modbus to connect to homeassistant
Thanks