OPC Unified Architecture - Part 11: Historical Access
文件核验信息（付费前可核对）
标准范围（官方英文摘要）
IEC 62541-11: 2025 defines the Information Model associated with Historical Access (HA). It particularly includes additional and complementary descriptions of the NodeClasses and Attributes needed for Historical Access, additional standard Properties, and other information and behaviour. The complete AddressSpace Model including all NodeClasses and Attributes is specified in IEC 62541？3. The predefined Information Model is defined in IEC 62541？5. The Services to detect and access historical data and events, and description of the ExtensibleParameter types are specified in IEC 62541？4. This document includes functionality to compute and return Aggregates like minimum, maximum, average etc. The Information Model and the concrete working of Aggregates are defined in IEC 62541？13. Conventions for Historical Access Clients are informatively provided in Annex A.
This fourth edition cancels and replaces the third edition published in 2020. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) a functionality has been added to support retrieving of modified events;
b) an Event has been a
标准信息
- 标准号
- IEC 62541-11:2025
- 英文标题
- OPC Unified Architecture - Part 11: Historical Access
- 发布单位
- —
- 技术委员会
- TC 65/SC 65E
- 版本 / 版次
- 3.0
- 状态
- 现行
- 发布日期
- 2025
- ICS 分类
- 35.100.05 多层应用
- 页数
- 73 页
- 官方定价
- CHF 380
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