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This part of IEC 62541 describes the OPC Unified Architecture (OPC UA) AddressSpace and its Objects. This part is the OPC UA meta model on which OPC UA information models are based.
OPC unified architecture - Part 3: Address Space Model (IEC 62541-3:2010); English version EN 62541-3:2010
本部分IEC 62541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中的标准化节点。这些节点是标准化类型以及用于诊断或作为服务器特定节点入口点的标准化实例。因此，信息模型定义了一个空OPC UA服务器的地址空间。然而，并不期望所有服务器都会提供所有这些节点。
OPC unified architecture - Part 5: Information Model (Endorsed by AENOR in July of 2015.)
本规范描述了OPC统一架构(OPC UA)的地址空间及其对象。本部分是OPC UA的元模型，OPC UA信息模型基于此。
OPC Unified Architecture - Part 3: Address Space Model
IEC 62541-22:2025 specifies an OPC UA Information Model for a basic set of network related components used in other Information Models. The initial version of this document defines parameter sets for TSN Talkers and Listeners as well as network interfaces and ports as shown in Figure 1. A future version of this document is expected to have a broader scope of other network technologies than Ethernet only.
OPC unified architecture - Part 22: Base Network Model
This part of IEC 62541 describes the OPC Unified Architecture (OPC UA) AddressSpace and its Objects. This Part is the OPC UA meta model on which OPC UA information models are based.
OPC Unified Architecture - Part 3: Address space model
IEC 62541-12:2025 specifies how OPC Unified Architecture (OPC UA) Clients and Servers interact with DiscoveryServers when used in different scenarios. It specifies the requirements for the LocalDiscoveryServer, LocalDiscoveryServer-ME and GlobalDiscoveryServer. It also defines information models for Certificate management, KeyCredential management and AuthorizationServices. Annex A informatively discusses deployment and configuration aspects. Annex B defines NodeSet and numeric NodeIds. Annex F provides installation rules for the LDS. Annex H compares the Certificate management defined in this document with IETF RFC 7030. This second edition cancels and replaces the first 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 a "Quantity Model" which can be referenced from EngineeringUnit Properties. The model defines quantities and assigned units. In addition it provides alternative units and the conversion to them; b) addition of rules for ValuePrecision Property: ? can also be used for other subtypes like Duration and Decimal. ? additional rules when ValuePrecision has negative values.
OPC unified architecture - Part 12: Discovery and global services
本部分IEC 62541规定了OPC统一架构中报警和条件的表示方法。包括OPC UA地址空间中报警和条件的信息模型表示。报警系统的其他方面，如报警哲学、生命周期、报警响应时间、报警类型等许多细节，在IEC 62682和ISA 18.2等文件中有所体现。本规范中的报警和条件信息模型是根据IEC 62682和ISA 18.2设计的。
OPC Unified Architecture - Part 9: Alarms and Conditions (IEC 62541-9:2020); English version EN IEC 62541-9:2020 / Note: DIN EN 62541-9 (2015-11) remains valid alongside this standard until 2023-07-23.
What is BS EN IEC 62541 ? 5 about? ? BS EN IEC 62541 ? 5 is the fifth part of the OPC unified architecture multi-series. It deals with information models related to OPC unified architecture. ? BS EN IEC 62541 ? 5 defines the information model for 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.
OPC Unified Architecture - Information Model
本部分IEC 62541定义了OPC统一架构(OPC UA)的地址空间及其对象。本文档是OPC UA的元模型，OPC UA信息模型基于此。
OPC Unified Architecture - Part 3: Address Space Model (IEC 62541-3:2020); English version EN IEC 62541-3:2020 / Note: DIN EN 62541-3 (2015-11) remains valid alongside this standard until 2023-08-12.
IEC 62541-16:2025 defines an Information Model. The Information Model describes the basic infrastructure to model state machines. NOTE?State Machines were dealt with in IEC 62541?5:2020, Annex B. In newer versions of IEC 62541?5 this Annex B was removed and replaced by this document
OPC unified architecture - Part 16: State Machines
本部分 IEC 62541 规定了 OPC 统一架构中警报和条件的表示。包括 OPC UA 地址空间中警报和条件的信息模型表示。警报系统的其他方面，如警报哲学、生命周期、警报响应时间、警报类型和许多其他细节在 IEC 62682 和 ISA 18.2 等文件中捕获。本规范中的警报和条件信息模型是根据 IEC 62682 和 ISA 18.2 设计的。
OPC Unified Architecture - Part 9: Alarms and Conditions (IEC 62541-9:2020); English version EN IEC 62541-9:2020
本部分IEC 62541定义了OPC统一架构(OPC UA)的地址空间及其对象。本文件是OPC UA的元模型，OPC UA信息模型基于此。
OPC Unified Architecture - Part 3: Address Space Model
本部分IEC 62541定义了OPC统一架构的信息模型。该信息模型描述了服务器地址空间的标准化节点。这些节点既包括标准化类型，也包括用于诊断或作为特定服务器节点入口点的标准化实例。因此，信息模型定义了一个空的OPC UA服务器的地址空间。然而，并不期望所有服务器都会提供所有这些节点。
OPC Unified Architecture - Part 5: Information Model
本部分IEC 62541规定了OPC统一架构中警报和条件的表示。包括OPC UA地址空间中警报和条件的信息模型表示。
OPC unified architecture - Part 9: Alarms and conditions (Endorsed by AENOR in June of 2015.)
IEC 62541-3:2025 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 62541-3: 2025 describes the OPC Unified Architecture (OPC UA) AddressSpace and its Objects. This specification is the OPC UA meta model on which OPC UA information models are based. 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 the concept and modelling elements for Interfaces and AddIns; b) addition of Currency; c) addition of Method Meta Data to define additional attributes for Method Arguments; d) addition of ApplyRestrictionToBrowse bit to AccessRestrictionType; e) addition of a Non-Volatile Storage bit to AccessLevelExType; f) addition of a Constant bit and ConfigurationConstant bit to AccessLevelExType; g) the View NodeClass has been changed to define the EventNotifier as an EventNotifierType in the same way the Object NodeClass defines it; h) correctition of HasNotifier, HasEventSource, and Organizes, to include ObjectType as valid source node; i) NamingRules have become deprecated; j) addition of AssociatedWith ReferenceType.
OPC unified architecture - Part 3: Address Space Model
