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OPC UA Online Reference

Searchable official reference for OPC UA core specifications and companion information models.

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The OPC UA Online Reference provides searchable access to the core OPC UA specifications and published companion information models. Engineers can review services, address-space concepts, security models, profiles, mappings and industry-specific models.

Use it when designing interoperable information models, mapping field data into OPC UA or checking the requirements of a particular service or companion specification.

This reference is maintained by OPC Foundation. Use the official source for the latest revision and licence terms.

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