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IoT Bridge for SiteWise is an application that is deployed via AWS Marketplace as a launchable Amazon Machine Image (AMI) in AWS EC2. It connects to an MQTT Server (such as AWS IoT Core) and consumes MQTT Sparkplug messages from Edge devices. After receiving messages that are properly formatted it then pushes that data into AWS SiteWise in a form that it can consume. This model continues Cirrus Link's vision of 'one source of truth' at the Edge that can be pushed from the OT networks to IT networks without complex data transformations or manipulation as it flows from one system to the next.
IoT Bridge can be deployed in the environment shown below without the need for any custom code to be written. Using Inductive Automation's Ignition platform at the Edge with Cirrus Link's MQTT Transmission module, a wide range of information can be automatically gathered and published. This includes but is not limited to Inductive Automation's OPC modules and Cirrus Link's EFM modules. Through configuration with these tools, data is automatically captured and published as Sparkplug based MQTT messages to an MQTT Server. From there, IoT Bridge consumes this data and again automatically pushes that data to AWS SiteWise. It automatically creates Asset Models, Assets using those models, attaches attributes to them, and creates measurements and updates their values as new Sparkplug MQTT messages flow through the system. Again, this is done without being required to write any code at either the Edge or in the Cloud.
IoT Bridge performs the following functions.