📖 Overview
This guide provides a step-by-step procedure for integrating the N3uron IIoT platform with Robustel Edge Gateways (EG Series) running RobustOS Pro. N3uron is a powerful industrial edge platform that enables data orchestration between OT and IT systems.
By following this example, you will learn how to:
- Collect data from a Modbus device.
- Visualize that data locally using the WebVision module.
- Forward the processed data to an external MQTT broker for cloud integration.
🛠 What You'll Need
Hardware:
- Robustel EG Series Gateway (e.g., EG5100, EG5120).
Software/Firmware: RobustOS Pro v2.3.0 or newer.
- N3uron software installed on the gateway.
- An MQTT Client tool (e.g., MQTT.fx or MQTT Explorer) for verification.
- Connectivity: Ethernet or Cellular internet access.
📝 Note: Ensure your PC is in the same subnet as the gateway (Default IP: 192.168.0.1) to access the WebUI.
🚀 Step-by-Step Configuration Guide
1️⃣ Phase 1: Data Acquisition (Modbus Client)
In this stage, we configure N3uron to poll data from a Modbus TCP device.
- Create Modbus Module:
- Navigate to System > Config > Modules.
- Click Add and create a new module.
- Set Module Type to
ModbusClient.
- Configure Channel:
- Create a new Channel under the Modbus module.
- Set the Host (IP address of your Modbus server) and the TCP Port (default is
502).
- Define Device:
- Create a Device under the channel.
- Assign the correct Slave ID for your target equipment.
- Create Tag Group:
- Navigate to System > Config > Tags.
- Create a new Group to organize your data points.
- Configure Data Tag:
- Create a Tag within the group.
- Set Number Type and enable the source by toggling Enable under the Source section.
- Link the tag to the Modbus module by selecting the Module Type (
ModbusClient) and the Module Name you created. - In the Source Config, specify the Device, Modbus Address, and Data Type.

2️⃣ Phase 2: Data Visualization (WebVision)
WebVision allows you to create a local HMI dashboard directly on the gateway.
- Create WebVision Module:
- Navigate to System > Config > Modules.
- Click Add and select WebVision as the module type.
- User Permissions:
- Add an access user for WebVision.
- Grant the user Designer permissions.
- Ensure the user has access rights to the Tags created in Phase 1.
- Design the Interface:
- Open the Designer interface and log in with the authorized user.
- [Insert screenshot of WebVision Designer Interface]
- Create UI Components:
- Create a Container and select Set as startup.
- Inside the container, add a Component (e.g., a display gauge or text box).
- Link the component value to the Modbus Tag created previously.
- Launch UI:
- Save and open the generated WebVision UI URL to view live data.

3️⃣ Phase 3: Data Forwarding (MQTT Client)
Finally, we forward the collected data to a remote MQTT broker.
- Create MQTT Module:
- Navigate to System > Config > Modules.
- Create a module with Module Type set to
MqttClient.
- Establish Connection:
- Create a new MQTT connection.
- Under Connection Options, enter your Broker URL (e.g.,
mqtt://broker.hivemq.com:1883).
- Set Publisher:
- Create a Publisher entry.
- Define the Topic where the gateway will post data.
- Verify Transmission:
- Use your external MQTT client tool to subscribe to the defined topic.

❓ Troubleshooting / FAQ
- Q: Why is my Modbus module showing a "Timeout" error?
- Check physical wiring (for RTU) or IP connectivity (for TCP).
- Ensure the Slave ID and register addresses match the device documentation.
- Q: I cannot log into the WebVision Designer.
- Verify that the user was created specifically within the WebVision module settings and has "Designer" rights enabled.
- Q: MQTT data is not reaching the broker.
- Check the gateway's Firewall settings to ensure outbound traffic on port 1883/8883 is allowed.
- Verify the Broker URL format includes the protocol (e.g.,
mqtt://).
📖 Conclusion
After completing this guide, N3uron should be configured on a Robustel edge computing gateway to collect Modbus data, display values locally, and forward processed data through MQTT. Users should verify the Modbus tags, WebVision display, and MQTT output before adapting the configuration for a real industrial system or a wider OT to IT workflow.
📜 Revision History
Version | Date | Author | Notes |
v1.0 | 2026-01-28 | Jens Zhou | Initial document creation.
|