IEC 62541-5:2020 Opc统一架构 - 第5部分:信息模型

标准编号：IEC 62541-5:2020

中文名称：Opc统一架构 - 第5部分:信息模型

英文名称：OPC Unified Architecture - Part 5: Information Model

发布日期：2020-07-10

标准范围

IEC 62541-5:20 20作为IEC 62541-5:20 20 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 62541-5:20 20定义了OPC统一架构的信息模型。信息模型描述了服务器地址空间的标准化节点。这些节点是标准化类型以及用于诊断或作为特定于服务器的节点的入口点的标准化实例。因此，信息模型定义了空OPC UA服务器的地址空间。然而，并不期望所有服务器都提供所有这些节点。这第三版取消并取代了2015年出版的第二版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更:a)增加了关于用户认证的附件F。描述也允许配置角色的角色信息模型。b)添加了新的数据类型:“Union”、“Decimal”、“OptionSet”、“DateString”、“TimeString”、“DurationString”、“NormalizedString”、“DecimalString”和“AudioDataType”。c）添加了请求服务器状态更改的方法。d）添加了将订阅设置为持久模式的方法。e)添加了请求从订阅重新发送数据的方法。f)在C.4中添加了允许临时创建文件以写入服务器或从服务器读取的概念。g)添加了新的变量类型以支持选择列表。h)向FiniteStateMachineType添加了可选属性，以公开当前可用的状态和转换。i）向ServerType添加了UrisVersion属性。该版本信息可用于无会话服务调用。

IEC 62541-5:2020 is available as IEC 62541-5:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 62541-5:2020 defines the Information Model of the OPC Unified Architecture. The Information Model describes standardized Nodes of a Server’s AddressSpace. These Nodes are standardized types as well as standardized instances used for diagnostics or as entry points to server-specific Nodes. Thus, the Information Model defines the AddressSpace of an empty OPC UA Server. However, it is not expected that all Servers will provide all of these Nodes.
This third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Added Annex F on User Authentication. Describes the Role Information Model that also allows configuration of Roles.
b) Added new data types: "Union", "Decimal", "OptionSet", "DateString", "TimeString", "DurationString", NormalizedString", "DecimalString", and "AudioDataType".
c) Added Method to request a state change in a Server.
d) Added Method to set Subscription to persistent mode.
e) Added Method to request resending of data from a Subscription.
f) Added concept allowing to temporarily create a file to write to or read from a server in C.4.
g) Added new Variable type to support Selection Lists.
h) Added optional properties to FiniteStateMachineType to expose currently available states and transitions.
i) Added UrisVersion Property to ServerType. This version information can be used for session-less service invocation.

IEC 62541-5:2020 Opc统一架构 - 第5部分:信息模型

标准范围

标准预览图