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- reading simple value types
- reading arrays (with support for the Destination column)
- writing simple value types
- reading of template items (UDT)
- reading of dataset items
- browsing - finding a list of metrics
The communication was tested/deployed with:
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Note: it is also possible to monitor the status of other Sparkplug Host Applications connected to the MQTT server. If the Identifier of Host Application is e.g. "ACME", so it is necessary to create a station with the address "spBv1.0/STATE/ACME" (or in abbreviated form "ACME") and on it an I/O tag of type Di with the address "JA=online" (since the Host Application sends a STATE message with a JSON payload).
BrowseKotva browse browse
In the Sparkplug mode, for the I/O tags, it is possible to discover the list of metrics, as long as the KOM process is running and communication with an MQTT server is established.
Clicking the Browse button opens the MQTT Item Browser window and displays a list of received metrics. The object list is created dynamically as a result of received messages.
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