To read and write data from up to 5 Huawei SUN2000 inverters and LUNA2000 batteries via Modbus TCP. Third-party devices can be integrated via the modbus proxy.

Wiki

Some interesting things are explained in the wiki

Forum

Feel free to follow the discussions in the german iobroker forum

Inspiration

The development of this adapter was inspired by discussions from the forum thread https://forum.iobroker.net/topic/53005/huawei-sun2000-iobroker-via-js-script-funktioniert and the iobroker javascript https://github.com/ChrisBCH/SunLuna2000_iobroker.

Work in progress

Changelog

WORK IN PROGRESS

(bolliy) Adapter log have been reduced to the bare essentials. This makes it easier to categorize timeouts and connection issues, particularly those involving the sDongle.

2.7.4 (2026-10-22)

(bolliy) enhance error messages for Modbus communication and improve error rate calculations

2.7.3 (2026-10-06)

(bolliy) An incorrect bracket was used when converting the number to an array

2.7.2 (2026-10-04)

(bolliy) fix: disabled the adapter install/update pop-up message
(bolliy) fix control.externalPower: prevent negative values

2.7.1 (2026-10-03)

(bolliy) update devDependencies to latest versions
(bolliy) Allow decimal values for battery.tou.maximumPowerForChargingFromGrid and grid.maximumFeedGridPower. (#300)

2.7.0 (2026-08-23)

(bolliy) fix: Ensure that unacknowledged control states occurring during startup are correctly processed in the service queues.

License

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Huawei sun2000 inverter