标准摘要
[中文适用范围]: IEC 61784-3 系列的本部分规定了基于 IEC 61784-1@ IEC 61784-2 (CP 3/1@ CP 3/2@ CP 3/4@ CP) 的 CPF 3 的安全通信层(服务和协议) 3/5 和 CP 3/6) 以及 IEC 61158 类型 3 和 10。它确定了 IEC 61784-3 中定义的与该安全通信层相关的功能安全通信原则。注 1:它不包括电气安全和本质安全方面。电气安全涉及电击等危险。本质安全涉及与潜在爆炸性环境相关的危险。本部分定义了根据 IEC 61508 系列 2 对功能安全的要求,使用现场总线技术在分布式网络内的参与者之间传输安全相关消息的机制。这些机制可用于各种工业应用,例如过程控制、制造自动化和机械。本部分为合规设备和系统的开发人员和评估人员提供指南。注 2:系统的 SIL 声明取决于所选功能安全通信配置文件在该系统内的实现?根据本部分在标准设备中实现功能安全通信配置文件不足以将其认定为安全设备。 [外文原描述]: IEC 61784-3-3:2010 specifies a safety communication layer (services and protocol) based on CPF 3 of IEC 61784-1, IEC 61784-2 (CP 3/1, CP 3/2, CP 3/4, CP 3/5 and CP 3/6) and IEC 61158 Types 3 and 10. It identifies the principles for functional safety communications defined in IEC 61784-3 that are relevant for this safety communication layer. This second edition cancels and replaces the first edition published in 2007. This edition constitutes a technical revision. The main changes with respect to the previous edition are: - updates in relation with changes in IEC 61784-3; - introduction of a secondary watchdog timer (F_WD_Time_2) to cover the use cases 'configuration-in-run', or 'maintenance of fault tolerance systems', or both (7.1.3, 7.2.3, 7.2.6, 8.1.1, 8.1.4, 8.1.6.2); - missing GSDL definitions conveyed from other approved documents (8.3.2.1); - missing CRC signature calculation for a GSD conveyed from other approved documents (8.3.3.3); - constraints for the parameter value assignment of the primary watchdog timer 'F_WD_Time' (9.3.3); - identification of the safety parameterization state of an F-Device or F-Module via field IM4 (signature) within the I&M functions (9.6.2); - updated documents in bibliography. This bilingual version (2012-02) corresponds to the monolingual English version, published in 2010-06.
英文名称Industrial communication networks - Profiles - Part 3-3: Functional safety fieldbuses - Additional specifications for CPF 3