Huawei Sun2000 Inverter and Schneider Bi directional meter

Installation

1. 1Connect the ModbusCloud gateway (MCG or MLP series) to the same local network as the Huawei Sun2000 inverter and Schneider meter.
2. 2Enable Modbus TCP on the Huawei Sun2000 inverter via its configuration interface or the FusionSolar app, and note the IP address and port (default 502).
3. 3Ensure the Schneider bidirectional meter is reachable over Modbus TCP, either natively or through an RS485-to-TCP converter, and record its IP address and unit ID.
4. 4Import the Huawei Sun2000 and Schneider bidirectional meter template from the ModbusCloud template library into your gateway configuration.
5. 5Set the correct IP addresses, TCP ports, and Modbus unit IDs for both devices in the template settings.
6. 6Verify data is flowing by checking live register values on the ModbusCloud dashboard for both the inverter and the meter.

Things to watch for

01

Why do power and energy values show incorrect or very large numbers?

The inverter uses int32 registers for power and energy, which span two consecutive Modbus registers. Make sure the register pair is read as a 32-bit signed integer with the correct byte and word order. Mismatched byte order will produce wrong values.

02

How do I enable Modbus TCP on the Huawei Sun2000 inverter?

Modbus TCP can be enabled through the inverter's local interface or the FusionSolar app. Navigate to the communication settings and activate the Modbus TCP server. The default port is 502.

03

Can I use this template if the Schneider meter is connected via RS485?

Yes, but you need an RS485-to-Modbus-TCP gateway between the meter and the network. Configure the converter with the correct baud rate, parity, and unit ID matching the Schneider meter settings.

04

What Modbus unit ID should I use for each device?

The Huawei Sun2000 typically defaults to unit ID 1, but this can be changed in the inverter settings. The Schneider meter unit ID depends on your configuration. Verify both unit IDs and enter them correctly in the template.

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