Deye - Activate Modbus TCP

The following guide describes how to configure the Modbus TCP  settings for Deye inverters and how to test the connection.

Prerequisites​

• Compatible with SUN-G3-EU-230  Series (300W to 2000W models)
• Network scanning tool (e.g., Advanced IP Scanner )
• Web browser
• Network connectivity

Configuration Process​

Locating Your Inverter​

1. Choose one of these methods:
   • Use your router's interface
   • Use Advanced IP Scanner  to identify inverter IP

Accessing Settings​

1. Enter inverter IP  in browser
2. Login with default credentials:
   • Username: admin
   • Password: admin
3. Modify URL to: http://<ipaddress>/config_hide.html

Modbus Configuration​

Configure "Internal server parameters settings":

1. Set Protocol to TCP-Server
2. Set Port to 8899
3. Enter your server IP  address
4. Set TCP timeout to 300

Troubleshooting​

Inverter Discovery Issues​

If you cannot find your inverter:

1. Verify inverter power status
2. Check network connectivity
3. Try alternative network scanning tools

Settings Problems​

If settings are not saving:

1. Confirm you're using the config_hide.html  URL
2. Clear browser cache and retry
3. Verify admin  access rights

Modbus Connection Issues​

If Modbus is not working:

1. Verify port 8899  is accessible
2. Check server address accuracy
3. Test using Modbus  diagnostic tool

Testing Connectivity (advanced)

After completing the configuration, you should verify that the Modbus TCP connection is working properly. Follow our testing guide to confirm the connection. For Deye inverters, remember to use port 8899 when testing the connection. The Unit ID is typically set to 1, but you may need to try 0 if that doesn't work.

Source​

• Sourceful Community