Adding data points to MQTT devices - Industrial IoT 4.4.2.4

Industrial IoT Plugin Guide 4.4.2.4

Applies to
Industrial IoT 4.4.2.4
Last updated
2022-10-12
Content type
Guides > Plugin and extension guides
Language
English
Product
Industrial IoT
Version
4.4

To monitor the data points of an MQTT device or entity, you must add them to the device or entity in Security Center.

Before you begin

Obtain the topics and payload structure (JSON path) of the device that you have enrolled.

Procedure

  1. From the Config Tool home page, open the Plugins task.
  2. Select an MQTT device or entity from the entity browser and click the Properties tab.
  3. In the Data points section, click Add data point ().
  4. In the Information section, enter a name for the data point.
  5. In the Protocol information section, enter the following:
    MQTT topic
    The topic that the MQTT broker will subscribe to for the JSON payload. This payload will be parsed to extract the value of the data point.
    JSON path
    The JSON path that will be used to extract the value from the JSON payload in regards to the data point.
    NOTE: If the data point value does not appear within a JSON payload sent to the plugin with the correct topic, the data point value will not be updated.
    Value type
    The type of information reported by the input (data point).
  6. In the Measurement unit section, enter the following:
    Name
    The name of the unit of measure of the data point.
    Symbol
    A symbol to represent the unit of measure of the data point.
  7. Click Add and then click Apply.

Results

The data point is displayed in the Data points section.