Working with the Data Hub

The Data Hub enables applications and built-in services to communicate with each other. The Data Hub is based on a provider-consumer model. Providers manage variables that are offered to the Data Hub. Consumers can read, write, and subscribe to the values of the variables.

The Data Hub Browser can be used for:

• Displaying all variables and providers available on the device.
• Searching through all variables via keywords.
• Finding the variable key and the provider ID of a specific variable to integrate it into applications (e.g. Node-RED).

The Data Hub Variable APIs can be used for:

• Reading and writing existing variables via internal and external applications.
• Providing variables with applications that are installed on the device.

If you have installed a third-party app that uses the system bus, the data of the system bus will be displayed in the Data Hub in read-only mode.