范围:IEC 62443系列的本部分提供了与IEC 62443-1-1中描述的七项基本要求（FRs）相关的详细技术控制系统要求（SRs），包括定义控制系统能力安全等级SL-C（控制系统）的要求。这些要求将由工业自动化和控制系统（IACS）社区的各个成员以及所考虑系统（SuC）的定义区域和管道使用，同时开发适当的控制系统目标SL、SL- T（控制系统），用于特定资产。 根据IEC 62443-1-1的定义，共有七种FRs:a）识别和认证控制（IAC），b）使用控制（UC），c）系统完整性（SI），d）数据保密性（DC），e）受限数据流（RDF），f）事件及时响应（TRE），以及g）资源可用性（RA）。 这七个要求是控制系统能力SLS、SL—C（控制系统）的基础。定义控制系统级别的安全能力是本标准的目标，而不是目标SLs、SL- T、 或者实现了超出范围的SLs、SL-A。 参见IEC 62443-2-1，了解完全实现控制系统目标SL所需的一组等效非技术性、程序相关的能力SRs。交叉参考:IEC/TS 62443-1-2009IEC 62443-2-1EN IEC 62443-4-1IEC 62443-4-1EN IEC 62443-4-2ISO/IEC 27002EN IEC 62443-4-2EN ISO/IEC 27002EN IEC 62443-2-4IEC 62443-2-4包含以下内容:勘误表，2019年5月；勘误表，2014年5月

Scope: This part of the IEC 62443 series provides detailed technical control system requirements (SRs) associated with the seven foundational requirements (FRs) described in IEC 62443-1-1 including defining the requirements for control system capability security levels, SL-C (control system). These requirements would be used by various members of the industrial automation and control system (IACS) community along with the defined zones and conduits for the system under consideration (SuC) while developing the appropriate control system target SL, SL-T (control system), for a specific asset. As defined in IEC 62443-1-1 there are a total of seven FRs:a) Identification and authentication control (IAC),b) Use control (UC),c) System integrity (SI),d) Data confidentiality (DC),e) Restricted data flow (RDF),f) Timely response to events (TRE), andg) Resource availability (RA). These seven requirements are the foundation for control system capability SLs, SL-C (control system). Defining security capability at the control system level is the goal and objective of this standard as opposed to target SLs, SL-T, or achieved SLs, SL-A, which are out of scope. See IEC 62443-2-1 for an equivalent set of non-technical, program-related, capability SRs necessary for fully achieving a control system target SL.Cross References:IEC/TS 62443-1-1:2009IEC 62443-2-1EN IEC 62443-4-1IEC 62443-4-1EN IEC 62443-4-2ISO/IEC 27002IEC 62443-4-2EN ISO/IEC 27002EN IEC 62443-2-4IEC 62443-2-4Incorporates the following:Corrigendum, May 2019; Corrigendum, May 2014