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MQTT Transmission provides a mechanism for publishing newly added tags to the tag tree for which a Transmitter publishes on. This must be done any time new tags are added to the tag tree or tags are moved within the tag tree. It must also be done any time properties of tags are modified.

Since MQTT Transmission only publishes tag updates on Value or Quality changes, this mechanism can also be useful in refreshing slow changing tag values so that downstream processes can confirm that the system is operating correctly.

This can be done manually or via a script.

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In performing this type of 'Edge Node specific Refresh' using the '[MQTT Transmission]Transmission Info/Transmitters/TRANSMITTER_NAME/Edge Nodes/GROUP_ID/EDGE_NODE_ID/Refresh Edge Node' means that only the sub-tag tree associated with this specific Edge Node will be rescanned. So, using this mechanism will only publish a new BIRTH sequence for this one Edge Node. In this example only 'My Group/Edge Node 1' would publish it's BIRTH sequence. In addition, if tags had been added to any other Edge Nodes Node(s) the changes would not be picked up because the refresh scope is to this one single Edge Node.


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