OPC UA connection concepts
Understand endpoint identity, certificates, namespaces and information models before integration.
Before using this guide
Confirm your site, role and source revision. Follow the local procedure and responsible engineer for physical actions.
What to capture
Document the endpoint URL, server identity, supported security mode/policy, namespace and node identifiers, and expected data types. Agree certificate trust with the site administrator. Verify the observed values and units against a trusted local source.
Review path
- Use a test endpoint or approved read-only window.
- Confirm certificate and user trust; never bypass validation for convenience.
- Map nodes to stable semantic names and quality states.
- Record reconnection and stale-data behavior.
Check before proceeding
- Security choices are site-specific; use the approved policy and vendor documentation.
Source references
These official references provide additional context. Confirm the current edition and your site requirements.