统一架构 第9部分：报警与条件

[中文适用范围]： IEC 62541-9:2026 RLV 版本包含官方 IEC 国际标准及其修订对照版。修订对照版仅提供英文版，便于快速、简便地比对官方标准与其上一版之间的所有变更。 IEC 62541-9:2026 规定了 OPC 统一架构（OPC UA）中“报警与状态”的表示方法，其中包括该架构地址空间内报警与状态的信息模型表示。报警系统的其他方面，如报警理念、生命周期、响应时间、报警类型等，已在 IEC 62682 和 ISA 18.2 等标准中予以规范。本文档中的“报警与状态”信息模型依据 IEC 62682 和 ISA 18.2 设计。 附录 C 给出了 OPC 经典报警与事件（A&E）服务器与本文档所述模型之间的推荐映射关系；附录 A 描述了报警状态的推荐本地化名称；附录 B 提供了若干示例，例如事件序列及地址空间中的报警区域等。 本第四版于 2026 年发布，替代了 2020 年发布的第三版，属于技术修订版。与上一版相比，本版本包含以下主要技术变更： a) 在报警搁置方法中新增“注释”（Comment）参数； b) 新增一种方法，允许客户端获取所属组的成员，因为地址空间可能并未暴露报警实例； c) 在限值报警类型（Limit AlarmType）的所有限值中新增死区属性（该类型为本文档所述其他类型的基类）； d) 新增说明文字：ISA 18.2 已不再支持禁用报警功能，但本文档为保持向后兼容性予以保留，同时建议不启用报警禁用操作； e) 为限值报警新增可选的严重性等级； f) 新增 AlarmState 变量类型，可用于收集报警信息并在图形界面上显示； g) 新增 SupportsFilterRetain 属性，以提升客户端的过滤能力； h) 从条件类型（ConditionType）定义中移除 ConditionSubClassId 和 ConditionSubClassNames，因为这两项现已在 BaseEventType 中定义。 [外文原描述]： IEC 62541-9:2026 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 62541-9:2026 specifies the representation of Alarms and Conditions in the OPC Unified Architecture. Included is the Information Model representation of Alarms and Conditions in the OPC UA address space. Other aspects of alarm systems like alarm philosophy, life cycle, alarm response times, alarm types and many other details are captured in standards such as IEC 62682 and ISA 18.2. The Alarms and Conditions Information Model in this document, is designed in accordance with IEC 62682 and ISA 18.2. Annex C specifies a recommended mapping between OPC Classic Alarm & Events (A&E) servers to the model described in this document. Annex A describes recommended localized names for Alarm states. Annex B describes examples (e.g. Event sequences, Alarm areas in AddressSpace). 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) addition of "Comment" parameter to Alarm shelving methods; b) addition of method that allows a client to get the members of a group, since it is possible that the AddressSpace does not expose instances of alarms; c) addition of deadband properties for all limits in the limit AlarmType (from which all other types described in this issue are derived); d) addition of text explaining the disabling of alarms is no longer supported in ISA 18.2 and that it is maintained in this document for backward compatibility, but that it is recommended that Alarm not be disabled; e) addition of optional severities for limit alarms; f) addition of new AlarmState variable type that can be used to collect alarm information for displays on graphics; g) addition of SupportsFilterRetain property to improve Client filtering; h) removal of ConditionSubClassId and ConditionSubClassNames from the conditiontype definition since they are now defined in BaseEventType.