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.
| Pin 2 | RX |
| Pin 3 | TX |
| Pin 5 | GND |
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.