# Sungrow

> Sungrow inverters in the Voltmasters EMS: which series support Modbus TCP and curtailment, and how to connect them.

Source: https://voltmasters.io/en/docs/device-integrations/pv-inverters/sungrow/

Sungrow is a global leader in solar inverter and energy storage solutions.

Within our EMS, we support a wide range of Sungrow inverters for monitoring, control, and energy management.

The following Sungrow devices are compatible with and supported by our EMS for communication and integration.

| Device Type | Modbus TCP (Ethernet) | Curtailment |  |  |
| :-: | :-: | --- | --- | --- |
| SG-Series | ✅ | ✅ |  | false |
| S-Series | ✅ | ✅ |  | false |
| SR-Series | ✅ | ✅ |  | false |
| MVS-Series | ✅ | ✅ |  | false |
| ST-Series | ✅ | ✅ |  | false |
| SH-Series | ✅ | ✅ |  | false |
| SBR-Series | ✅ | ✅ |  | false |
| SC-Series | ✅ | ✅ |  | false |

### Physical connection

### Network configuration

#### Ethernet configuration

To configure the inverter for Ethernet communication:

1.  Open the inverter display interface
2.  Navigate to:
    -   **Settings → Communication Parameters**
3.  Enable **MODBUS-TCP**
4.  Set the communication port:
    -   **Default Port: 502**
5.  Configure:
    -   DHCP, or
    -   A static IP address depending on your network requirements

* * *

### Device configuration

#### Enable Modbus communication

1.  Open the inverter LCD display
2.  Navigate to:
    -   **Settings → Communication Parameters**
3.  Configure the following settings:

| Parameter | Value |
| --- | --- |
| Protocol | MODBUS |
| Device Address | Unique address between 1–247 |

### Modbus TCP Settings

| Parameter | Value |
| --- | --- |
| MODBUS-TCP | Enabled |
| Port | 502 (default) |
| IP Address | According to network configuration |

> **Warning**
>
> Important issue

![A Sungrow parameter list, in Dutch, with shutdown at an active power limit of zero percent set to disabled.](https://voltmasters.io/assets/docs/whatsapp-image-2026-05-18-at-16.30.47.webp)

### Known issues

#### Inverter goes offline after receiving a setpoint of 0

Some Sungrow inverter models stop communicating with the EMS for an extended period after the EMS sends a power setpoint of 0 kW (for example, during curtailment at negative energy prices). The inverter enters a low-power or sleep state and does not immediately respond to new commands.

**Workaround**: If this behaviour occurs on your installation, contact Voltmasters Support. A configuration adjustment may be required to prevent the inverter from entering this unresponsive state during zero-setpoint periods.