IEC 62541的这一部分描述了OPC统一体系结构（OPC UA）安全模型。它描述了OPC UA预计运行的物理、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规范本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规范其他部分中规定的安全功能。它引用指定的服务、映射和概要文件 在OPC UA规范的其他部分中有规范性规定。它提供了关于实现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间的任何看似模糊之处，都不会消除或减少其他规范性部分中规定的要求。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This part of IEC 62541 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.All current amendments available at time of purchase are included with the purchase of this document.