| Device Type | Modbus TCP (Ethernet) | RS485 |
|---|
| WhatWatt GO Energy Meter | ✅ | ❌ |
- Must purchase a whatwatt Plus license to enable Modbus TCP support.
- The Energy Meter must be connected to the P1 port of your digital utility meter and be joined to the same local network as the EMS.
- Visit the device's web interface at
http://<DEVICE_IP_ADDRESS>/ and enter your license key.
- Navigate to the Integrations page and enable Modbus. Keep the port as 502.
- Click the check mark in the top right to save the settings.
Last updated August 24, 2026
