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	✅	✅
S-Series	✅	✅
SR-Series	✅	✅
MVS-Series	✅	✅
ST-Series	✅	✅
SH-Series	✅	✅
SBR-Series	✅	✅
SC-Series	✅	✅

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

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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

Important issue

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.