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Device integrations

Sunny Boy / Sunny Tripower

Supported devices: Sunny Tripower 3.0-10.0, Sunny Tripower TL-20, Sunny Tripower TL-30, CORE1, CORE2, Sunny Tripower 125, Sunny Tripower X, Sunny Tripower TL-US-10 and Sunny Boy

Our EMS connects directly to SMA Sunny Boy and Sunny Tripower inverters over Modbus TCP for production monitoring and active-power curtailment. Most models integrate through the generic SunSpec adapter; a few families have a dedicated SMA-native adapter.

Supported devices

Series Models Adapter
Sunny Tripower 3.0 / 4.0 / 5.0 / 6.0 / 8.0 / 10.0 STP3.0 to STP10.0 SunSpec
Sunny Tripower TL-20 (legacy, beta) STP 5000TL-20, 6000TL-20, 7000TL-20, 8000TL-20, 9000TL-20, 10000TL-20, 11000TL-20, 12000TL-20 SMA Sunny Tripower TL-20, chosen automatically
Sunny Tripower TL-30 STP 15000TL-30 (beta), 20000TL-30, 25000TL-30 SMA Sunny Tripower TL-30, chosen automatically. Available from controller version 0.0.337.
Sunny Tripower TL-10 STP 10000TL-10, 17000TL-10 (beta) SunSpec
Sunny Tripower TL-US-10 (beta) STP 12000TL-US-10, 15000TL-US-10, 20000TL-US-10, 24000TL-US-10, 30000TL-US-10 SunSpec
Sunny Tripower CORE1 STP 50-40, STP 50-41 SMA Modbus profile, chosen automatically from controller version 0.0.339. On an older controller: SunSpec.
Sunny Tripower CORE2 STP 110-60 SMA Sunny Tripower CORE2, chosen automatically
Sunny Tripower 125 (beta) STP 125-70 SMA Modbus profile, chosen automatically. Set the Modbus Unit ID of the inverter to 3.
Sunny Tripower X STP 12-50, 15-50, 20-50, 25-50 SunSpec
Sunny Boy and other SMA inverters with SunSpec SunSpec
Older Sunny Tripower without SunSpec SMA Modbus profile

Most models connect through the generic SunSpec adapter. A dedicated SMA adapter talks to SMA’s own register layout and gives extra values, such as the active power per phase and the voltage and current on the DC bus.

Any SMA inverter that exposes the standardised SunSpec Modbus profile can be integrated through the generic SunSpec adapter, even if it is not listed by name above. See SunSpec (Generic). To read several inverters through a single connection, use the SMA Data Manager.

Enable Modbus TCP

  1. Log in as Installer

    Connect your laptop to the same network as the inverter, open its IP address in a browser and log in with the Installer user group.

    The login page of the SMA STP50-41 web interface, in Dutch, with the language, user group and password fields.

  2. Open the device parameters

    Click Device Parameters (Apparaatparameters in the screenshots) and then Edit Parameters (Parameters bewerken).

    The SMA web interface with the device parameters tab highlighted, the device status, the current power on a gauge and the yield figures.
    The SMA device parameters page, in Dutch, with the edit parameters button highlighted above the collapsed parameter groups.

  3. Enable the Modbus TCP server

    Expand External Communication → Modbus → TCP Server (Externe communicatie), set Enabled (Modbus TCP-server ingeschakeld) to Yes and leave the Port at 502.

    The SMA external communication section, in Dutch, with the Modbus unit ID and the TCP server on port 502 highlighted.

  4. Save the settings

    Click Save All (Alle opslaan).

    The SMA device parameters tab, in Dutch, with one unsaved change that enables the Modbus TCP server, and the save all button highlighted.

Active-power curtailment (with any adapter) requires the inverter's Modbus write access and grid-management mode to be enabled in the SMA Installer settings, and the correct Modbus Unit ID to be configured. Without this, the EMS can read data but cannot send setpoints.

Enable reactive power control

To allow the EMS to send reactive-power setpoints, the inverter's reactive power mode must be set to external control. In the inverter's web interface, go to:

Device parameters > System and device control > Inverter > Reactive power mode

Set both of the following parameters to Q, external setting (instead of Off):

  • Reactive power mode in case of active power output
  • Reactive power for zero active power
The SMA reactive power mode section with the dropdown open and Q, external setting highlighted while Off is still the active choice.

In the Dutch interface: Apparaatparameters > Installatie- en apparaatbesturing > Omvormer > Blindvermogenprocedure: set Procedure blindvermogen bij afgifte act. vermogen and Procedure blindvermogen bij nul act. vermogen both to Q, externe instelling.

Active power control and fallback

Curtailment only arrives if the inverter's feed-in management mode points at the register the EMS writes, and a wrong mode fails silently. The inverter can also limit itself when it stops receiving setpoints. See Active power control and fallback.