DataItem – OPC Unified Architecture – Part 8: Data Access

OPC Unified Architecture – Part 8: Data Access

v1.05.07

1Scope
2Normative references
3Terms, definitions and abbreviated terms
- 3.1Terms and definitions
- 3.2Abbreviated terms
4Concepts
5Model
6Quantities and Units model
7Data Access specific usage of Services
Annex AOPC COM DA to UA mapping (Normative)
Annex BUCUM Symbols (Normative)
Annex COutline of Syntax References (Informative)
Bibliography

3.1.1 DataItem

link to arbitrary, live automation data, that is, data that represents currently valid information

Note 1

Note 1 to entry: Examples of such data are

device data (such as temperature sensors),
calculated data,
status information (open/closed, moving),
dynamically-changing system data (such as stock quotes),
diagnostic data.