If you want a simple and reliable solution for monitoring SUN2000 inverter and only collecting parameters to InfluxDB database I’ve added a support for this inverter in my hard.
The daemon is written in Rust and doesn’t need any special python/perl dependencies to work.
The SUN2000 can expose RS-485 data via internal WiFi interface or even (with newest firmware) via Smart Dongle-WLAN-FE.
All interfaces are well described here in this post:
If you build the hard, the following minimal config is needed to connect to inverter and pass the data to the InfluxDB: