Configure MQTT JSON Schema A Digital Points

With the MQTT JSON Schema A driver, you use:

• MQTT JSON Schema A Digital Points to retrieve digital data from a device that publishes that data to the broker. The data has to be associated with an MQTT topic to which Geo SCADA Expert has subscribed.

You configure the properties of each digital point using fields on the MQTT JSON Schema A Digital Point Form. The configuration Form contains many fields, organized into tabs. Most of these tabs contain properties that are common to points on many drivers (see Tabs on Point Forms in the Geo SCADA Expert Guide to Advanced Drivers).

The Digital Point tab includes properties that are specific to MQTT JSON Schema A Digital Points.

Use the Digital Point tab to:

• Configure the Common Point Properties
• Define the Point Formatting (see Define the Format of a Digital Point’s Values in the Geo SCADA Expert Guide to Core Point Configuration)
• Configure the Point States (see Define the Point States for a Digital Point in the Geo SCADA Expert Guide to Core Point Configuration). MQTT JSON Schema A Digital Input points have 1-bit and therefore can be in either of two states.
• Specify the Area of Interest (see Specify the Area of Interest Associated with the Point’s State-Related Alarms and Events in the Geo SCADA Expert Guide to Core Point Configuration). This requirement only applies if the Area of Interest feature is enabled on your system (in which case an Area of Interest field is displayed below the States section of the tab).
• Configure the Override Properties (see Define whether a Digital Point can be Overridden in the Geo SCADA Expert Guide to Core Point Configuration)
• Configure the Trend Properties (see Define a Digital Point's Trend Settings in the Geo SCADA Expert Guide to Core Point Configuration).
• Configure the Logged Data Properties (see Specify the Type of Point Data that the Driver is to Store Historically).