Working with the Topic Filters List

The Topic Filters List is MQTT-specific—it is only available on systems on which the MQTT driver is installed. Use the Display Topic Filters pick action to display the Topic Filters List for a particular MQTT Broker item in the database. The List contains entries for the topics that are associated with that particular broker.

As with other Lists, the Topic Filters List consists of rows and columns. Each row represents an individual topic entry, and each column contains information about a specific value associated with that topic.

The Topic Filters List contains these column headings:

• Enabled—This column indicates whether the database item that is used to specify the topic in Geo SCADA Expert is In Service (active), or not In Service (inactive). True indicates that the database item is In Service; False indicates that the database item is not In Service.

  A broker is only capable of transmitting data for topics that are associated with database items that are In Service and have valid configuration.

  The type of database item that is used to specify a topic varies per extension driver. For more information, see the guide for the relevant MQTT extension driver.

• Topic Filter—This column shows the topic filter that the remote MQTT client uses in the messages that it publishes to the broker.

As with other Lists, you can right-click on an entry in the List to display a context-sensitive menu (see Work with Common List Options).