统一架构 第11部分：历史访问

[中文适用范围]： IEC 62541-11:2025 RLV包含官方的IEC国际标准及其红线版本。红线版本仅提供英文版，可帮助用户快速、简便地比较官方IEC标准与其前一版之间的所有变更。IEC 62541-11:2025定义了与历史访问（HA）相关的信息模型。它特别包括了用于历史访问所需的NodeClasses和Attributes的附加和补充描述、附加的标准属性，以及其他信息和行为。完整的AddressSpace模型，包括所有NodeClasses和Attributes，详见IEC 62541-3。预定义的信息模型在IEC 62541-5中定义。用于检测和访问历史数据和事件的服务，以及可扩展参数类型的描述详见IEC 62541-4。本文件包括计算并返回如最小值、最大值、平均值等聚合值的功能。信息模型和聚合的具体运作方式在IEC 62541-13中定义。附录A提供了历史访问客户端的相关惯例。本第四版取消并替代了2020年发布的第三版。本版构成技术修订版。与前一版相比，本版包括以下重大技术变更：a）增加了支持获取修改事件的功能；b）新增了一个事件，用于指示回填发生；c）定义了一种新的ReferenceType，可用于指示外部节点；d）改进了文本，以更清晰地解释注释的概念并消除冲突的解释；e）定义了默认的历史记录配置（以及如何找到它）；f）增加了HistoricalEventConfigurationType，提供了关于历史事件存储的一般配置信息；g）更新了文本，并向HA配置对象添加了可选字段，以允许为周期性数据收集配置，而不仅限于异常事件收集；h）提供了一种可用于外部事件收集的ObjectType，以及一个关于历史记录如何配置的示例。 [外文原描述]： IEC 62541-11:2025 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. 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 added to indicate when a backfill occurred; c) a new ReferenceType that can be used to indicate an external node has been defined; d) the text has been improved to better explain the concept of annotation and remove conflicting explanations; e) a default historian configuration (and where to find it) has been defined; f) HistoricalEventConfigurationType, which provides general configuration information about the historical Event storage, has been added; g) the text has been updated and optional fields have been added to HA configuration object to allow configuration to be defined for periodic data collection, not just for exception-based collection; h) an ObjectType that can be used for external event collection has been provided as well as an example how historians can be configured.