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It is also important to note that Ignition in conjunction with Cirrus Link's MQTT Transmission module converts Ignition User Defined Types (UDTs) to Sparkplug Templates. This is done automatically by the MQTT Transmission module. So, much of this document will refer to UDTs rather than Sparkplug Templates since that is what they are in Ignition. More information on Inductive Automation's Ignition platform can be found here. Additional information on Cirrus Link's MQTT Transmission module can be found here.

Info

AWS IoT has a message size limit of 128KB and will disconnect the client if it receives a message that exceeds this limit. If you have a large number of UDT definitions/instances and/or have very large UDTs, you will very likely hit this limit when sending your UDTs to IoT Core. Review this document for ways to reduce the message size.


Snowflake Setup

If you don't have a Snowflake account, open a Web Browser and go to https://www.snowflake.com. Follow the instructions there to start a free trial. After creating an account, log in to Snowflake via the Web Console. You should see something like what is shown below.

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