Huawei sun2000 inverter

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

2.6.2 (2026-08-23)

(bolliy) update devDependencies to latest versions
(bolliy) fix: update day-start baseline handling of consumption breakdown

2.6.1 (2026-08-16)

(bolliy/claude) Fix: consumption breakdown entries (statistics.dataDef.consumptionBreakdown) the correct daily value in statistics.jsonToday`
(bolliy) fix: enhance error handling and validation in device initialization
(bolliy) Added: consumption.baseValue field in statistics.json* — holds the unreduced total house consumption before breakdown entries are subtracted.

2.6.0 (2026-07-22)

(booliy/claude) Optimization of memory usage
(bolliy/claude) Added six new EMMA control registers (#285)
(bolliy/claude) Implemented Time-of-Use (TOU)
(booliy/claude) modbus-proxy: Direct register reading on cache mismatch

2.5.1 (2026-06-29)

(bolliy) fix: update service queue logic (#283)
(bolliy) statistics fix: adjust reset handling logic to treat significant drops in value as potential resets

2.5.0 (2026-06-09)

(bolliy) statistics: added live power chart (statistics.jsonLive)
(bolliy) statistics: consumption breakdown — breakdown values are now subtracted from the total consumption entry so the lower chart panel shows the remainder separately from the breakdown series
(bolliy) statistics: xAxisFormatter for the live chart only labels full-hour ticks to avoid clutter
(bolliy) statistics: tooltip formatter refactored — formatTooltipValue(unit, negative, decimals) helper used consistently across all series
(bolliy) statistics: if no battery is present, the charts are generated without battery information (SOC, charge, discharge).
(bolliy) fix emma: update register addresses of meter.activePowerL1-L3 (#282)
(bolliy) requires node.js >= 22

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.