A python 2.7 script to allow direct monitoring of sungrow inverters over LAN TCP modbus connections and upload the averaged observations for a specified interval to pvoutput.org
Based on a cut down version of Meltaxa's solarIoT script please check out their work if you are interested in a full on prememsis solution.
The modbus map was generated from the official sungrow modbus specification and contains many commented out registers. These are present simply as a register index to make it easier for anyone else that is looking for the information to get ahold of it as it was not openly avialble when I began this project. Only active power is required for the upload to pvoutput.
A docker container is available at thomasfa18/solar-sungrow for a click and run solution.
- Clone the repository to a directory eg ./app
- Install python 2.7 and pip
apt-get update && apt-get -y install curl python python-pip
- Install the required python modules
pip install --trusted-host pypi.python.org -r requirements.txt
- Create a config.py that matches your environment in the same directory as the sungrow_monitor.py script
- Run the script, it will spit out messages to stdout every scan interval
python sungrow_monitor.py
- Configure a directory for the config file [config.py] and modbus map if you have a custom one [modbus-.py]
- Create a config.py based off the example that matches your environment and place it in the config directory
docker pull thomasfa18/solar-sungrow
- Download the docker image
- Run the docker image with the volume switch to mount your config directory as /config in the image
docker run -v <localpath>:/config thomasfa18/solar-sungrow
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- This has been tested on a a sungrow SG5K-D inverter only
- A list of "valid devices" is included at the top of the modbus map, this came from the sungrow modbus specification document directly. It may work with other devices, I do not know.
- The script only performs reads of the input registers (function code 04), if you do not know anything about modbus I would highly dicourage you from making changes.
- In short, you are welcome to use this, but if you do you are agreeing that if something bad happens then it was not my fault and you can't sue me.