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MQTT Client
Configuration
MQTT Client in Configuration Hub
Configuration Hub allows you to manage the MQTT Client connections to multiple broker(s) that collect, store, and retrieve data parameters.
OPC UA
The OPC UA protocol is a standard communication mechanism for transferring data between interfaces. OPC UA clients connect to the OPC UA server and collect data from UA Variables.

Configuration Hub Products Documentation

MQTT Client
- Getting Started
- Utilities
- Configuration
  - MQTT Client in Configuration Hub
    Configuration Hub allows you to manage the MQTT Client connections to multiple broker(s) that collect, store, and retrieve data parameters.
    - MQTT Client Configuration
      Use the following steps to configure the MQTT connections in the Configuration Hub.
    - Save and Publish
      When the MQTT node is plugged-in with Configuration Hub, the common toolbar will contain the Save button at the top left. Changes made in Configuration Hub for MQTT nodes are not saved on the server until the changes are published. Until then, any changes are stored in a separate directory on the node being configured.
    - Publish Log and Version
      After you publish the MQTT plugin changes, you can directly view the published log reports by clicking the icon.
    - OPC UA
      The OPC UA protocol is a standard communication mechanism for transferring data between interfaces. OPC UA clients connect to the OPC UA server and collect data from UA Variables.
      - OPC UA Settings
        After establishing broker connections, subscriptions, and tags information, click the overflow icon of the MQTT plugin, and then select OPC UA Settings to connect to the OPC UA server and establish the OPC UA client connection.

OPC UA

The OPC UA protocol is a standard communication mechanism for transferring data between interfaces. OPC UA clients connect to the OPC UA server and collect data from UA Variables.

OPC UA is an independent open communication platform for both industrial and business application needs. The OPC UA server acts as a bridge between the IIoT devices (such as sensors, HMI software, SCADA systems, and so on) and OPC UA clients. It protects data integrity and helps in creating a scalable, reliable, and secure connection. OPC UA supports communication protocols, and also the exchanging of data between devices. Information requested by OPC UA clients is translated through the OPC UA server.

The MQTT client application is used as a two-way data communication. You can also write from OPC UA clients to MQTT clients or from IIoT devices.

After you configure MQTT Client information (that is, establishing the connections, subscriptions, and tags), the OPC UA server reads the configuration and displays the tags in a hierarchical manner. The hierarchy includes the client's name (unique per broker), topic, and the tag name within the topic. The OPC UA server reads the values of the data subscribed to by the MQTT clients. The OPC UA data is then published to OPC UA Clients.

Refer to OPC UA Settings to configure the OPC UA settings page.