_terminal

Hi,
Yes, reading the settings will retrieve the current settings from the inverter and populate the dashboard.  You can then make changes if you like and press write settings to push back the changes to the inverter.
Some explanation on the different dashboards:
System Settings - Provides you with the ability to read and write the live settings from the inverter Default Settings - This stores a set of default settings to the file system on Pi.  This was utilized to store my non-loadshedding settings.  These settings are automatically pushed to the inverter based on the loadshedding status Loadshedding Settings - This stores a set of loadshedding settings to the file system on Pi.  This was utilized to store my loadshedding settings.  These settings are automatically pushed to the inverter based on the loadshedding status Time Mode - I use the Time Mode to trigger feeding back into my non-essential loads on certain days of the week.  Due to my solar setup currently being undersized to power the entire house on days when my domestic worker (higher loads due to washing, tumble dryer, ironing etc) is here, this allows me to save some additional power on the alternate days by feeding back into the non-essentials. A note for everybody else, if you want to access the dashboards then go to the following address http://[your pi's IP]:1880/ui

@JGB Check on your inverter under Advanced -> Multi-Inverter. If Modbus SN is set to 00 change that to 01. This solved my timeout issue. 
Edit: Likely not given you have an adapter that works.