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Start by configuring the MQTT Transmission module. Do so by opening Ignition Designer and creating a tag structure similar to what is shown below with [default]MQTT Tags/FB107 folders:

Note this structure is based on usage of the 'Default Example Transmitter' in MQTT Transmission in Ignition8.  So, the directory structure is very important.  Note the structure.

• [tag provider/Edge Nodes/[Group ID]/[Edge Node ID]]MQTT Tags/[Device ID]/...

In the example below this implies the following definitions:

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• [Edge Node ID] = E1[Device ID] = Flow Computer 1FB107

Note since we are using the 'Example Transmitter' of Ignition8 we also need to set the Group ID and Edge Node ID in the Example Transmitter. To do so, go to MQTT Transmission → Settings on the left Ignition Gateway Web UI navigation panel. Then select the 'Transmitters' tab as shown below:

Image AddedThese exact values will be used for the EFM Emerson ROC connection Sparkplug parameters to tell the EFM Emerson ROC which MQTT Transmission Transmitter configuration to use and, in turn, which MQTT connection to use to send the event data on.

Next the MQTT Transmission server configuration must be modified to point to the Central Ignition Gateway we set up earlier.  To do so, in the Ignition Gateway Web UI browse to the Configure tab on the top and then to MQTT Transmission Settings in the lower left as shown below.

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