I've had a Multiplus 2 5000 with a Cerbo GX unit for a few days. In addition, I have had a Mennekes Amtron Xtra 22KW wall box for two years. I would like to use the Mennekes Wallbox for surplus charging. The Wallbox can use MODBUS TCP. Has anyone found a way to set this up? If there is no way I will probably have to buy the new Victron Wallbox. I am happy about your answers.