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Data from an Edge edge device publishing MQTT payloads with binary data can be parsed at Ignition using an MQTT Engine Custom Namespace and an Ignition script.

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Follow the steps in the MQTT Publishing via Transmission to publish an MQTT message with a topic of a/b and a payload of [30, 32, 32, 34, 41]

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When using the default MQTT module configuration for MQTT Distributor and MQTT Engine, you your arguments will look like:

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When the MQTT message is received and parsed by MQTT Engine, a tag folder tree will be created create containing the binary data as shown below:

Create a Value Changed script on the tag

To parse the binary tag data we will now create a Value Changed script on the tag.

Follow the steps in the Ignition Tag Event Scripts documentation to create a Value Change script on the tag and copy the code below which will parse through the binary data and make the bytes available for use as needed.  

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system.cirruslink.transmission.publish("Chariot SCADA", "a/b", [1, 2, 3, 4, 5, 6], 0, False)

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