What Is the OPC UA Information Model?
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The Founder's Explanation (Teach Exactly This Way)
"A list of names tells you little — Ram, Sita, Lav. But a family tree tells you Ram is the father, Sita the mother, Lav the son — the relationships. OPC UA information model is a family tree for data. Not just a value, but this value belongs to that pump, in that zone, with this limit. The data describes itself."Teaching the Concept
A Family Tree, Not a Name List A list of names tells you little. A family tree shows who is the parent, who the child, how everyone relates. The OPC UA information model is a family tree for data — every value carries its name, type, unit and its links to other things. The data describes itself and its relationships. The Model ``` NODES objects, variables, properties REFERENCES links between nodes (has-property, part-of) TYPES define structure and meaning ADDRESS SPACE the whole navigable graph ``` What It Enables ``` Pump (object) - SupplyTemp (variable, deg C) - HighLimit (property) - belongs-to -> Zone 3 (reference) a client can BROWSE and UNDERSTAND without a manual map ``` The information model turns a list of numbers into a map of meaning — data that carries its own relationships.Related Topics
- What is OPC UA in BMS and when is it needed? — when to reach for OPC UA
- What is BMS integration? — how a BMS connects VFDs, meters and other systems
- Browse all Protocols topics — more from this section of the EnSmart BMS Library
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