Register
Gateway setup · one-time

Enable Modbus on your GoodWe inverter

A quick setup in the GoodWe SolarGo app. Do this once, before you connect your Sundime Gateway.

Why this step? Your Sundime Gateway manages your battery by talking to the inverter's Wi-Fi/LAN dongle over Modbus TCP on your home network. Two switches in SolarGo open that door — until they're on, the Gateway can't see or control your system.

For accepted Sundime beta homes only Follow this guide only after Sundime has confirmed the exact system is compatible. Change only the two communications switches shown here. Do not alter country, grid, export, protection, battery or other installer settings.

Before you start

  • 📱Install GoodWe “SolarGo” from the App Store or Google Play (skip if your installer already set it up).
  • 🔑Have your User password ready. Ask your installer for it — it's the User password, not the Installer one.
  • 📶Stand next to the inverter. This uses Bluetooth, so you need to be within a few metres of it.
  1. 1

    Open SolarGo and choose Bluetooth

    On the Device List screen, make sure the Bluetooth tab is selected — not WLAN. If nothing appears, tap Search Device while standing near the inverter.

    9:41
    Device List
    Bluetooth
    WLAN
    WLA-•••••••• 0001›
    Search Device
    Not Found ›
    Tap the Bluetooth tab
  2. 2

    Tap your dongle

    Tap the WLA-… entry for your inverter. Its full serial is printed on the sticker of the Wi-Fi module plugged into the inverter.

    Not sure it's the right one? Match the serial on the sticker, or check with your installer.
    9:41
    Device List
    Bluetooth
    WLAN
    WLA-•••••••• 0001›
    Search Device
    Not Found ›
    Tap your dongle
  3. 3

    Log in as User

    In the pop-up, choose User (the left icon — not Installer). Type the User password from your installer, then tap Login.

    Leave “Remember Password” ticked so you won't need to re-enter it next time.
    9:41
    Device List
    Bluetooth
    WLAN
    WLA-•••••••• 0001›
    ✕
    User
    Installer
    ••••••••
    ✓Remember Password
    Login
    User → password → Login
  4. 4

    Wait for it to connect, then open Settings

    Give it a few seconds to connect after you log in. Then tap Settings in the bottom bar.

    9:41
    Settings
    Communication Settings›
    Quick Settings›
    Basic Settings›
    Battery Function›
    Port Connection›
    Meter Function›
    Home
    Parameters
    •••Settings
    Tap Settings (bottom bar)
  5. 5

    Open Communication Settings

    At the top of the Settings list, tap Communication Settings.

    9:41
    Settings
    Communication Settings›
    Quick Settings›
    Basic Settings›
    Battery Function›
    Port Connection›
    Meter Function›
    Home
    Parameters
    •••Settings
    Tap Communication Settings
  6. 6

    Open Privacy & Security

    It's the first item in the Communication Settings list. Tap Privacy & Security.

    9:41
    ‹Communication Settings
    Privacy & Security›
    WLAN/LAN›
    FTP›
    4G›
    RS485›
    Tap Privacy & Security
  7. 7

    Turn on Modbus TCP (and check WLAN Control)

    Switch Modbus TCP ON — the toggle turns green. While you're here, make sure WLAN Control is ON too (it usually already is).

    Both green = done. These let your Sundime Gateway reach the inverter on your home network.
    9:41
    ‹Privacy & Security
    Bluetooth
    Bluetooth Always On
    ON: the app can reach the device over the module's Bluetooth signal.
    WLAN
    WLAN Control
    ON: the app can connect to the device over the module's local Wi-Fi network.
    Modbus TCP
    Modbus TCP
    ON: lets a third-party platform read device information over the communication protocol.
    Both toggles green / ON
✓

That's it — you're done in SolarGo.

Tap back, close the SolarGo app, and return to the Sundime app to finish connecting your Gateway. You only need to do this once.

GoodWe and SolarGo are trademarks of their respective owners. The screens above are illustrations — your app may differ slightly by version.