...
Click on the “Configuration” tab
Add a Modbus ETH device
The relevant devices should be selected as described in the image below. All of the steps described from this step and below should be performed on the second string if you are working with two strings.
If you have configured the rectifier, take note of the hub IP address that you have configured in the "Hub Configuration" section. If no configuration is required for the rectifier, write the default hub IP address 192.168.8.100.
Apply the changes
...
6. Click on “Write Configuration”
7. In the case of two strings, go back to step 3 and select the second string. Then, repeat the process for the second string.