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README.md

Huawei FusionSolar

Connects to a Huawei FusionSolar using Modbus RTU or TCP.

Huawei FusionSolar

The Huawei FusionSolar can be connected either via the Huawei SmartDongle or via a Modbus RTU (RS485) connection.

The following devices are supported:

  • Huawei FusionSolar Inverter (all model supported by the SmartDongle)
  • Huawei Meter (connected internally to the Inverter)
  • Luna2000 battery units 1 and 2 if connected

The batteries will be shown in the system as informative things, but will not be considered in the energy view and and energy balance. Since the batteries are connected internally behind the inverter, power coming from the battery will be shown as power coming from the inverter. The inverter power represents power from the PV or from the battery.

Huawei SmartDongle

The SmartDongle can be used to communicate with the Huawei Solar Inverter. In order to allow nymea to read from the device please make sure following requirements are met:

  • SmartDongle software version must be at least SP130.
  • Connect the Huawei SmartDongle to the network
  • Use the official FusonSolar App to enable Modbus TCP access for the Dongle (full access). You can find more informations here.

You can also contact the official Huawei support in order to get the update files and instructions, or get it from here.

The SmartDongle provides only access to the registers specified in the Huawei openAPI. Full modbus register access requires a modbus RTU connection.

Direct modbus RTU connection (RS485).

If you want to communicate directly with the inverter using modbus RTU, you need to wire up the connection correctly and set up the Modbus RTU interface in the nymea settings using the right configuations. Then you can discover the Modbus RTU interface while adding the Huawei Modbus RTU inverter in nymea.

The Modbus RTU offers a full access to all modbus registers available on the inverter.

Please contact your installer how to enable a modbus RTU connection for your setup.

More

https://solar.huawei.com/eu/