MQTT JSON Schema A Driver Guide - Tag (MQTT JSON Schema A) (MQTT JSON Schema A Terminology)

Tag (MQTT JSON Schema A)

A tag is an item of data.

In Geo SCADA Expert, you use a database Point on the relevant MQTT extension driver to represent a single item of data that is retrieved using MQTT.

For data that Geo SCADA Expert retrieves using either of the MQTT JSON Schema A message formats, you use a database Point on the MQTT JSON Schema A driver.

You use each Point item to specify the 'tag name' that uniquely identifies the item of data that the point represents in the remote client (the client that sent the data to the broker).

With the MQTT driver and extension drivers, 'time' and 'status' are reserved words. As such, 'time' and 'status' cannot be used for tag names.

Tag names are case-sensitive.