IEC 61784-3-19-ed.1.0

Annotation of standard text IEC 61784-3-19-ed.1.0 :

IEC 61784-3-19:2024 specifies a safety communication layer (services and protocol) based on IEC 61784-1-19, IEC 61784-2-19 and the IEC 61158 series (Type 24 and Type 27). 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. NOTE 1 It does not cover electrical safety and intrinsic safety aspects. Electrical safety relates to hazards such as electrical shock. Intrinsic safety relates to hazards associated with potentially explosive atmospheres. This document defines mechanisms for the transmission of safety-relevant messages among participants within a distributed network using fieldbus technology in accordance with the requirements of the IEC 61508 series for functional safety. These mechanisms can be used in various industrial applications such as process control, manufacturing automation and machinery. This document provides guidelines for both developers and assessors of compliant devices and systems. NOTE 2 The resulting SIL claim of a system depends on the implementation of the selected functional safety communication profile within this system – implementation of a functional safety communication profile according to this document in a standard device is not sufficient to qualify it as a safety device. IEC 61784-3-19:2024 specifie une couche de communication de securite (services et protocole) fondee sur lIEC 61784 1-19, lIEC 61784-2-19 et la serie IEC 61158 (Types 24 et 27). Elle identifie les principes qui sappliquent aux communications de securite fonctionnelle definies dans lIEC 61784 3, associees a cette couche de communication de securite qui est destinee a etre mise en ouvre sur les appareils de securite uniquement. NOTE 1 Elle ne couvre pas les aspects relatifs a la securite electrique et a la securite intrinseque. La securite electrique concerne les dangers comme les chocs electriques. La securite intrinseque concerne les dangers associes aux atmospheres explosibles. Le present document definit les mecanismes de transmission des messages relatifs a la securite entre les participants dun reseau reparti, en utilisant la technologie de bus de terrain conformement aux exigences de la serie IEC 61508 concernant la securite fonctionnelle. Ces mecanismes peuvent etre utilises dans differentes applications industrielles, par exemple la commande de processus, lusinage automatique et les machines. Le present document fournit des lignes directrices aux developpeurs, ainsi quaux evaluateurs dappareils et de systemes conformes. NOTE 2 Le SIL ainsi revendique pour un systeme depend de la mise en ouvre du profil de communication de securite fonctionnelle retenu au sein du systeme (la mise en ouvre dun profil de communication de securite fonctionnelle conforme au present document dans un appareil normal ne suffit pas a le qualifier dappareil de securite).