How-To: Adding Modbus Devices
This guide explains how to register new WAGO controllers or energy analyzers within the WEVA interface.
Prerequisites​
- Administrator credentials for the WEVA dashboard.
- Device network details (IP Address, Modbus Unit ID).
- Controller Modbus service must be Enabled.
1. Access Device Management​
Login to WEVA and navigate to the Configuration module.
- Select Device Management from the sidebar.
- Click the Add Device button.
2. Configure Device Parameters​
Enter the technical specifications for the target device.
| Field | Description | Example |
|---|---|---|
| Name | Unique identifier for the plant engineer. | Transformer_A_Meter |
| IP Address | IPv4 address of the controller. | 192.168.1.10 |
| Port | Modbus TCP port. | 502 |
| Unit ID | Modbus slave address. | 1 |
| Model | Select from pre-defined hardware profiles. | WAGO 879-8421 |
Screenshot: The 'Add Device' modal with sample technical data filled in.
3. Verification of Connectivity​
After saving, the system will attempt an initial heartbeat check.
- Observe the Status column in the device list.
- Green: Communication established.
- Red: Connection timeout. Check physical cabling and IP settings.
4. Troubleshooting Initial Connections​
If the device remains offline:
- Verify that no other master is locking the Modbus connection (Max 1 connection for some legacy controllers).
- Ping the device from the WEVA host terminal:
ping <device-ip>
Image: View of the device list showing one 'Online' and one 'Offline' device.