Introduction to Industrial Edge Databus

The Industrial Edge Databus (Databus) is the communication interface between Industrial Edge Apps and your own apps. The Databus is responsible for the data distribution, such as providing access to the data of field devices to IE applications or providing data from applications to any cloud provider.

The Industrial Edge Databus is a MQTT broker and implements a publish-subscribe-pattern based on the MQTT protocol. The Industrial Edge Runtime sends the data from field devices to the Databus. If you want to use this data for your custom application, you must connect your application to the Databus of the corresponding Industrial Edge Device via so-called topics. The Databus distributes the published data from apps to the defined topics. Other apps subscribe to these topics to consume the data. The configuration of the application is stored in the Databus, which allows the access of the app to the Databus.

The Databus consists of the following two components:

• Industrial Edge Databus Configurator
  The Databus Configurator installed in the Maintenance UI of the Industrial Edge Management. To run and configure the runtime app, the Databus Configurator must be installed.

• Databus (Runtime App)
  The Databus (runtime app) is a distributed application that runs on the individual Industrial Edge Device. Data point values from field devices connected to the individual Industrial Edge Devices are sent to the Databus. You use this application to access the data of the Databus for your individual applications.