Adding data points to MQTT devices - Industrial IoT 5.0.2.0 | BACnet | Modbus | OPC Client | SNMP Manager

Industrial IoT Plugin Guide 5.0.2.0

Applies to
Industrial IoT 5.0.2.0 | BACnet | Modbus | OPC Client | SNMP Manager
Last updated
2023-03-20
Content type
Guides > Plugin and extension guides
Language
English
Product
Industrial IoT
Version
5.0

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

Procedure

  1. From the Config Tool home page, open the Plugins task.
  2. Select an MQTT device or entity.
  3. In the Data points section, click Add a data point ()
    The Add a data point dialog box opens.
    Dialog box for adding an MQTT data point.
  4. Enter the following information:
    Name
    The name of the data point.
    MQTT topic
    The topic that the MQTT broker subscribes to for the JSON payload. This payload is 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.

    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).
    Access level
    Indicates whether the selected data point is read-only or read-write. This field is automatically displayed by the plugin role.
    Unit name
    (Optional) The measurement unit of the data point.
    Unit symbol
    (Optional) The symbol representing the measurement unit.
  5. Click Add to add another data point or click Add and Close.
    The data point is displayed in the Data points section.
  6. Click Apply.