Tests: 
Read register data from Huawei SUN2000 inverter and LUNA2000 battery using Modbus TCP.
Modbus interface definition (Issue 5, 2023-02-16): https://forum.iobroker.net/assets/uploads/files/1699119419919-solar-inverter-modbus-interface-definitions-v5.pdf
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.
- HUAWEI Inverter (SUN2000 Serie) M1
- HUAWEI Smart Dongle-WLAN-FE / min. Softwareversion: xxxSPC133 (SDongleA-05)
- HUAWEI Luna2000 Battery
- HUAWEI Smart Power Sensor DTSU666-H or DDSU666-H
- Maximum 5 inverters (master/slave) can be processed, each with a battery module (max. 30kWh).
- Live data such as input power, output power, charging/discharging power and the grid consumption are read out at a fixed interval.
- States are only written for changed data from the inverter. This relieves the burden on the iobroker instance.
- The states “inputPower” or “activePower” in the “collected” path can be monitored with a “was updated” trigger element. Because these states are always written within the set interval.
In order to use the Modbus connection, all Huawei devices must use the latest firmware
feature. You can perform latest firmware directly in the FusionSolar portal under “Upgrades”.
In the FusionSolar setup you still have to activate the Modbus on the WLAN dongle and set the access authorization. Download the FusionSolar-App onto your cell phone and use it to connect via the inverter's WLAN hotspot directly.
After the click on Me (Ich) in the footer Menu> Commission Device ("Inbetriebnahme des Geräts“) > log in (am Wechselrichter anmelden).
To log into the app as an installer you need usually the password:00000a or 0000000a
You may also need a password to connect to the inverters own WLAN: Changeme
After login on the inverter go to Settings (Einstellungen) > Communication configuration (Kommunikationskonfiguration) > Dongle parameter settings (Dongle‐Parametereinstellungen) > Modbus TCP > Activate the connection without restriction (Verbindung uneingeschränkt aktivieren). You can also enter the Modbus comm address at the same time read out.
If you use two inverters, then connect to the second inverter and read the communication address there too.
How activate 'Modbus TCP' - from huawei forum
address: Inverter IP addressport: Inverter modbus port (default: 502)modbusIds: inverter IDs, separated with "," (default: 1, max. 5 inverters)updateInterval: Fast update interval (default: 20 sec, smallest 5 seconds per inverter)
- display the data from PV strings (#27)
- optimize the timing of interval loop
- improved handling of read timeouts from more then 2 inverters
- fix: no Data if interval less 20 sec (#24)
- prepare collected values more precisely
- expand up to 5 inverters #18
- fix: problems with multiple inverters
- fix some collected values
- watchdog implemented #11
- state values are cached - only changed data should be stored
- derived and collected values for example
inputPowerEffectiveorinputYield - deploy more register
Dependency and configuration updates
initial release
MIT License
Copyright (c) 2024 bolliy stephan@mante.info
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