• OSI - Open Systems Interconnection model layers visualization 3d illustration

    What is the Open Systems Interconnection model?

    March 14, 2025
    How to understand the seven layers of the OSI model

    What are the seven layers of the Open Systems Interconnection (OSI) model? Read this article to find out, and then test yourself with this quiz.

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    This diagram shows how data flows from the production line into digital twin clients. Data from production floor devices is collected through standard industrial protocols, such as OPC UA and then structured and contextualized by the unified namespace (UNS). A message queuing telemetry transport (MQTT) broker distributes live data from the UNS to the Unity-based digital twin clients on compatible devices for accurate visualization of the production line. Time-series and SQL databases store historical data that Unity can access as needed. The supervisory control and data acquisition (SCADA) system obtains the same data as the UNS in parallel and operates on it before supplying its data to the UNS, offering additional process visibility and control. Cloud-based services like Amazon Web Services or Azure can be used to host the UNS, databases and other backend components so that Unity clients can access the digital twin securely over the internet.

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