# Huawei Sun 2000

<table data-header-hidden><thead><tr><th width="291" align="center"></th><th width="215" align="center"></th><th width="86" align="center"></th><th align="center"></th></tr></thead><tbody><tr><td align="center"><strong>Device Type</strong></td><td align="center"><strong>Modbus TCP (Ethernet)</strong></td><td align="center"><strong>RS485</strong></td><td align="center"><strong>Curtailment</strong></td></tr><tr><td align="center">Huawei SUN2000 Series Inverters</td><td align="center">✅</td><td align="center">✅</td><td align="center">✅</td></tr></tbody></table>

{% hint style="danger" %}
**Factory Reset Recommended:** We strongly recommend performing a factory reset on the Huawei inverter before adding it to the Voltmaster Controller. This ensures a clean initial handshake and prevents potential connection conflicts.
{% endhint %}

### Configuration

#### 1. Install the FusionSolar App

Ensure you have the latest version of the FusionSolar App installed on your mobile device.

#### ![](/files/Ab1oQo2uExFUd2e9GXQa)

#### 2. Establish Local Connection

Ensure the inverter is powered (AC or DC). Connect your smartphone to the inverter using one of these methods:

* WLAN Connection: Plug the WLAN/Smart Dongle into the USB port at the bottom of the inverter. Enable WLAN on your phone and stay within 5 meters.

#### 3. Communication Settings

1. In the app, go to Settings.
2. Navigate to Communication Configuration.
3. Select Dongle Parameter Settings.
4. Choose Modbus-TCP and set the connection to Enable (unrestricted).

<figure><img src="/files/UOtQJbjfh2e6JniYWJ65" alt=""><figcaption></figcaption></figure>

{% hint style="danger" %}
Firmware Requirements: If the Modbus-TCP option is not visible, a firmware update for the inverter is required.
{% endhint %}

#### 4. Power Control & Curtailment

{% hint style="info" %}
To enable active power management via the Voltmaster Controller, follow these steps:
{% endhint %}

1. On the app home page, select Power Adjustment.
2. Select Grid-tied Point Control.
3. Select Active Power.
4. Set the Control Mode to Remote Output Control.


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