RS232/COM port
Use a DB9 USB RS232 cable cable plugged into the inverter port labelled "RS232". Alternatively you can read more about the communication chips we recommend using here.
Steps in SolarAssistant
On the configuration page, select "Sumry" as your inverter model.
The cable you plugged in should show up as a USB port:
Click connect:
Parallel installations
With these inverters you will need to connect each inverter with its own cable.