Integrate Janitza UMG 96RM-E With SEDAC Lite Wi-Fi Gateway to VVAC DASHBOARD

The Janitza UMG 96RM-E is a multifunction energy meter used to measure voltage, current, power, and energy in three-phase systems. To make this data accessible online, we can use the SEDAC Lite Wi-Fi Gateway from VOLKKOMMEN®, which converts Modbus RTU (RS485) data into MQTT for cloud monitoring and visualizes it in the VOLKKOMMEN V-VAC dashboard.

In this guide, you’ll learn step-by-step how to:

1. Connect the Janitza UMG 96RM-E energy meter to the SEDAC Lite Wi-Fi Gateway.
2. Configure Modbus and MQTT parameters.
3. Publish real-time readings to V-VAC cloud dashboard.

Hardware Components

1. SEDAC Lite – Wi-Fi Gateway (VOLKKOMMEN®)
2. Janitza UMG 96RM-E Multifunction Energy Meter
3. 5V, 1A DC Power Adapter (for SEDAC Lite)
4. Power supply for UMG 96RM-E (typically 85–265 V AC)
5. Laptop / PC for configuration
6. Wi-Fi Router / Access Point
7. Screwdriver and wire stripper for connections
8. Connecting wires

Software Components

1. Web Browser (Google Chrome / Edge)
2. Wi-Fi Access Credentials (SSID and Password)
3. Network Analyzer Tool (to find the device — IP optional)

Power off both devices before wiring.

LED Status Indications

1. Blue: No Wi-Fi connection
2. Green: Wi-Fi connected
3. Yellow (Blink): Data being requested
4. Purple: Configuration mode
5. Red: Not connected with any device

You can display and analyze this data using the VOLKKOMMEN V-VAC Platform: V-VAC

Steps to Connect V-VAC :

1. Log in to your V-VAC account. (Create a new account if not signed up already.)
2. In the Devices section add a new device.
3. Select common device and enter the details of the device.
4. Copy the Device Token and paste it in the MQTT section of the SEDAC Lite Web Interface.

For further details check out (How to connect to V-VAC).

Enter Configuration Mode.

1. Press the Config button on the SEDAC Lite device.
2. The Status LED will turn purple, indicating that the device is now in configuration mode.

Connect to the SEDAC Lite Wi-Fi Network.

1. On your laptop or smartphone, open the list of available Wi-Fi networks.
2. Select:

SSID: Sedac Lite

1. When prompted for a password, enter:

Password: 12345678

1. Once connected, keep this network active — it will allow access to the configuration interface.

Open the Configuration Page.

1. Open a web browser (Google Chrome or Edge recommended).
2. In the address bar, type:

192.168.4.1

1. Press Enter — the Main Menu Page will open.
2. Click on “Configure Wi-Fi” to proceed to the network settings screen.

Add Your Wi-Fi Details

1. In the Wi-Fi Settings page, enter your router details:
2. SSID : Your_WiFi_Name
3. Password : Your_WiFi_Password
4. Click Save Settings.
5. The device will automatically restart and connect to your Wi-Fi network.

💡 Tip: Once it reconnects, the Status LED will change to green (connected).

Find the Device IP Address

1. Open your Wi-Fi router’s connected device list or use a network scanner app (like Fing or Advanced IP Scanner).
2. Locate SEDAC Lite in the device list — note down its IP address.
3. Use this IP to access the SEDAC Lite web interface for further configuration.

Access the SEDAC Lite Web Interface.

1. Open a web browser and enter the IP address you found in Step 3.
2. The login page will appear.
3. Enter the default credentials:

Username: User@volk.com

Password: Pass@123

1. Click Login to access the main dashboard.

Open the Setup Menu.

1. Once logged in, you’ll see the Main Menu (Page 02).
2. Click on the “Setup” option.
3. This will open the MQTT Configuration Page.

Configure MQTT Parameters.

Fill in the following details according to your cloud or broker settings:

Parameter : Value

Server : data.volkkommen.com

Port : 1883

Client ID : (leave blank)

Username : from V-VAC platform (Devices → Setup)

Password : from V-VAC platform (Devices → Setup)

Telemetry Topic Prefix : data/v1/

Suffix : (leave blank)

Topics (can add multiple topics for sending as multiple devices)

example → Topic 0 : f898f4a51628f4eb replace it with Device token from V-VAC platform (Devices).

Default Polling (seconds) Required interval to send data

Save and Apply Settings

1. Review all fields carefully.
2. Click “Save” to apply the settings.
3. Once successful, you’ll see green LED indicating an active Wi-Fi and MQTT connection.

Open the Modbus Configuration Page.

1. From the SEDAC Lite main menu, click “Modbus”.
2. A login prompt will appear — enter the credentials:

Username: admin

Password: admin

1. You’ll be redirected to the Modbus Register Entry page.

Set Communication Parameters

Enter the following settings according to your Janitza UMG 96RM-E configuration:

Parameter : Example Value : Description

Baud Rate : 9600 : Communication speed of RS485 line

Parity / Stop Bits : 8N1 : 8 data bits, No parity, 1 stop bit

Row count : 2 : No of rows to be shown below

Add Modbus Register Details

Refer to the Janitza UMG 96RM-E Modbus Register List (available in its user manual) and add key parameters to monitor.

Example registers:

Parameter : Example Value : Description

ID : 3 : According to the datasheet of the Janitza meter

Fn Code : 03 : According to the datasheet of the Janitza meter

Offset : 19000 : According to the datasheet of the Janitza meter

Format : Float

Sign : signed

Endian : Big

Div : 0

Param ID : 300

Topic : 0 : According to the topic number set in MQTT page

Interval (min) : 1 : Publishing time

Label : Voltage

Output : 249

Action : Click Read to view latest data

⚠️ Tip: Ensure that the Janitza meter’s RS485 settings (baud rate, parity, ID) match exactly with the SEDAC Lite configuration.

Save and Test the Configuration

1. Click “Submit Form” to save the Modbus settings.
2. Press the “Read” button to test communication.
3. If everything is correct, real-time data values will appear in the output field.

Troubleshooting

If you see “Timeout” or no response:

1. Double-check RS485 A+/B– wiring polarity.
2. Confirm that baud rate and slave ID match.
3. Ensure the Janitza UMG 96RM-E is powered and in Modbus RTU mode.

1. In Dashboard section you can configure widgets for your required data.
2. Click “Create Dashboard”.
3. Give your dashboard a name (e.g., Smart Sensor Dashboard).
4. Click the 3rd icon in the dashboard to open the dashboard.
5. Inside the dashboard editor, click “Edit” and click "Add Widget" to add new widgets.
6. In the selection menu choose any widget based on your data visualization needs.

For example:

1. Line Chart: For continuous data (voltage, frequency etc.)
2. Bar Graph: For comparing sensor readings
3. Card: For displaying single-value metrics
4. Link each widget to a device telemetry key (the data your device sends).
5. After customizing your widget, click the Show on Dashboard button to display it on the dashboard.
6. To save your changes, click the Save button at the top-right corner of the dashboard.
7. You’ll now see live charts and readings updating automatically.