SungrowModbusWebClient

Drop in replacement for SungrowModbusTCPClient/ModbusTCPClient that uses Websockets and HTTP API requests to work around Sungrow disabling Modbus requests on WiNet-S Dongle.

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About The Project

Access Modbus RTU via HTTP API call to Sungrow WiNet-S.

This uses HTTP requests to retrieve Modbus packets, add a header and then pass to PyModbus to parse like a standard Modbus RTU message

Class based on pymodbus.ModbusTcpClient, completely interchangeable, just replace ModbusTcpClient() or SungrowModbusTcpClient() with SungrowModbusTcpClient()

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Built With

• Python3

Requires

• pymodbus>=2.4.0
• websocket-client>=1.2.1

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Getting Started

Install via PIP, then if replace ModbusTcpClient() or SungrowModbusTcpClient() with SungrowModbusWebClient()

Installation

1. Install with PIP

   pip install SungrowModbusWebClient

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Usage

For Solariot, open solariot.py

Add to the top: from SungrowModbusWebClient import SungrowModbusWebClient

Replace SungrowModbusTcpClient with SungrowModbusWebClient near lines 100 & 101

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Tested

• SG7.0RT with WiNet-S Dongle
• SG10RT with WiNet-S Dongle

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Building

python setup.py sdist
twine upload dist/*

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License

Distributed under the GPL3 License. See LICENSE.txt for more information.

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Contact

Project Link: https://github.com/bohdan-s/SungrowModbusWebClient

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Acknowledgments

• solariot
• Sungrow-Modbus
• modbus4mqtt

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