标准摘要
[中文适用范围]: IEC 62541 的这一部分是整个 OPC 统一架构标准系列的一部分,定义了与历史访问 (HA) 相关的信息模型。它特别包括历史访问@附加标准属性@以及其他信息和行为所需的节点类和属性的附加和补充描述。 IEC 62541-3 中指定了完整的地址空间模型,包括所有节点类和属性。预定义信息模型在 IEC 62541-5 中定义。 IEC 62541-4 中指定了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。该标准包括计算和返回聚合的功能,例如最小值@最大@平均值等。信息模型和聚合的具体工作在 IEC 62541-13 中定义。 [外文原描述]: IEC 62541-11:2015 is part of the overall OPC Unified Architecture standard series and 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. It also 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.
英文名称OPC Unified Architecture - Part 11: Historical Access