标准摘要
[中文适用范围]： IEC 61784-3 系列的这一部分指定了基于 IEC 61784-1、IEC 61784-2 和 IEC 61158 Type 2 的 CPF 2 的安全通信层（服务和协议）。它确定了 IEC 中定义的功能安全通信的原则61784-3 与此安全通信层相关。该安全通信层仅用于在安全设备中实现。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。这些机构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 3-2:2016 specifies a safety communication layer (services and protocol) based on CPF 2 of IEC 61784-1, IEC 61784-2 and IEC 61158 Type 2. It identifies the principles for functional safety communications defined in IEC 61784-3 that are relevant for this safety communication layer. This safety communication layer is intended for implementation in safety devices only. This third edition cancels and replaces the second edition published in 2010. This edition constitutes a technical revision. The main changes with respect to the previous edition are listed below (and highlighted in yellow in this document): - Added detailed requirements for use of FSCP 2/1 in conjunction with CP 16/3 (see 4.1, 6.4.3, 6.5.3, 8.2, 8.13, and miscellaneous references when referencing CPF 2 networks); - Defined object class section keywords for safety to EDS file definition in 8.10.2.1; - New sections on safety CRC overview in 7.1.2.1 and Rollover counts for EF format in 7.4; - Corrections to PFH calculations in 9.5.2; - Change from MACID to NodeID as general reference to network identifier.
英文名称Industrial communication networks - Profiles - Part 3-2: Functional safety fieldbuses - Additional specifications for CPF 2