IEC TR 62541-2:20 20作为IEC TR 62541-2:20 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 62541-2:20 20描述了OPC统一架构（OPC UA）安全模型。它描述了OPC UA预期运行的物理、硬件和软件环境的安全威胁。它描述了OPC UA如何依赖其他安全标准。它提供了OPC UA规范的这一部分和其他部分中使用的通用安全术语的定义。它概述了OPC UA规范的其他部分中指定的安全特性。它引用了在OPC UA规范的其他部分中规范指定的服务、映射和配置文件。它提供了关于实施安全性的建议或最佳实践指南。本部分与其他规范性部分之一之间的任何看似模糊的地方都不会消除或减少其他规范性部分中规定的要求。

IEC TR 62541-2:2020 is available as IEC TR 62541-2:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 62541-2:2020 describes the OPC Unified Architecture (OPC UA) security model. It describes the security threats of the physical, hardware, and software environments in which OPC UA is expected to run. It describes how OPC UA relies upon other standards for security. It provides definition of common security terms that are used in this and other parts of the OPC UA specification. It gives an overview of the security features that are specified in other parts of the OPC UA specification. It references services, mappings, and Profiles that are specified normatively in other parts of the OPC UA Specification. It provides suggestions or best practice guidelines on implementing security. Any seeming ambiguity between this part and one of the other normative parts does not remove or reduce the requirement specified in the other normative part.