RS485 port

A purpose built USB RS485 cable can be plugged into the RS485 port located on the inside the inverter. This is an RS485 cable with a specific RJ45 pinout that can be purchased in our online store.

If you buy any random USB RS485 RJ45 cable on Amazon, Ebay, Takealot, etc. which doesn't specifically state that it supports the inverter, it will most likely not work.

The labelling of the RS485 monitoring port is sometimes not intuitive. Please see the correct port below.

Steps in SolarAssistant

On the SolarAssistant configuration page, select "Growatt" as your inverter brand and select the "Growatt SPH HU" as your model.

Select the USB port where your inverter is connected. If you have multiple inverters, you need to multi-select multiple USB ports.

Click connect:

Parallel installations

With these inverters you will need to connect each inverter with its own cable.