HistoricalEventNode – OPC Unified Architecture – Part 11: Historical Access

OPC Unified Architecture – Part 11: Historical Access

v1.05.04

1Scope
2Normative references
3Terms, definitions, and abbreviations
- 3.1Terms and definitions
- 3.2Abbreviated terms
4Concepts
5Historical Information Model
6Historical Access specific usage of Services
Annex AClient conventions (Informative)
- A.1How clients can request timestamps
- A.2Determining the first or last historical data point

3.1.6 HistoricalEventNode

Object or View in the AddressSpace for which a Client can access historical Events

Note 1

Note 1 to entry: “HistoricalEventNode’s history” or “history of a HistoricalEventNode” refers to the time series Events stored in some historical system. Examples of such data are:

Notifications
system Alarms
operator action Events
system triggers (such as new orders to be processed)

The term HistoricalEventNode is used when referencing aspects of the standard that apply to accessing historical Events only.