Hello,
I’ve used the Sungrow Logger 1000 in the past. What you found is correct, however missing some critical details, which were either omitted on the file you found or you missed them while reading it.
In Sungrow Logger 1000, all Modbus addresses that are shown on the file need to be subtacted by 1 because of how they configured it, as you can see on the screenshot). Also, do note that the unit ID necessary to communicate with the logger, by default, is 247. Cheers! 
