Sourceful Energy

After configuring Modbus TCP on your inverter, verify that the connection is working correctly using our <a href="https://github.com/srcfl/egw-getting-started/blob/main/test_con.md" rel="nofollow noopener noreferrer" target="_blank">testing guide</a>.

Each inverter brand uses a different port. Make sure to use the correct one when testing:

SolarEdge — port <code>1502</code>

Ferroamp — port <code>502</code>

- Huawei — port <code>6607</code>
- Deye — port <code>8899</code>
- Fronius — port <code>502</code>
- SolarEdge — port <code>1502</code>
- Sungrow — port <code>502</code>
- Ferroamp — port <code>502</code>

The Unit ID is typically set to <code>1</code>. If that doesn't work, try <code>0</code>.

For Huawei with restricted access mode enabled, make sure you are testing from an allowed IP address.

For SolarEdge, ensure Modbus TCP is enabled via the SetApp (port 1502).

Only one Modbus TCP client can connect at a time for most inverters.

- For Huawei with restricted access mode enabled, make sure you are testing from an allowed IP address.
- For SolarEdge, ensure Modbus TCP is enabled via the SetApp (port 1502).
- Only one Modbus TCP client can connect at a time for most inverters.

How to verify your Modbus TCP connection is working after configuration.

Testing Modbus TCP Connectivity

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Testing Modbus TCP Connectivity

Default Modbus TCP Ports

Unit ID

Notes