IEC IEC 61784-3 Edition 4.02021-02 INTERNATIONAL STANDARD NORME INTERNATIONALE colour nside Industrial communication networks-Profiles Part 3: Functional safety fieldbuses - General rules and profile definitions Réseaux de communication industriels - Profils - Partie 3: Bus de terrain de sécurité fonctionnelle - Regles genérales et definitions de profils IEC 61784-3:2021-02(en-fr THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2021 IEC, Geneva, Switzerland All rights reserved.Unless otherwise specified, no part of this publication may be reproduced or utilized in anyform or by any means, electronic ormechanical, including photocopying and microfilm, withoutpermission in writing from eitherIEc orIEC's memberNational Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, piease contact the address below or your local IEC member National Committee for further information. Droits de reproduction reserves. Sauf indication contraire, aucune partie de cette publication ne peut etre reproduite ni utilisée sous quelque forme que ce soit et par aucun procede, electronique ou mécanique, y compris la photocopie et les microfilms, sans I'accord écrit de I'lEC ou du Comite national de I'IEC du pays du demandeur. Si vous avez des questions sur le copyright de I'lEC ou si vous desirez obtenir des droits supplementaires sur cette publication, utilisez les coordonnées ci-apres ou contactez le Comite national de I'lEC de votre pays de residence. IEC Central Office Tel.: +41 22 919 02 11 3, rue de Varembé [email protected] CH-1211 Geneva 20 www.iec.ch Switzerland About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards forall electrical, electronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigendum or an amendment might have been published. IEC publications search-webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the varietyof criteria(referencenumber,text,technical publications previews.With a subscription you will always committee, ...). It also gives information on projects, replaced haveaccess to up to date content tailoredtoyour needs. and withdrawn publications. Electropedia-www.electropedia.org IECc Just Published - webstore.iec.ch/justpublished The world's leading online dictionary on electrotechnology, Stay up to date on all new IEC publications. Just Published containing more than 22 000 terminological entries in English details all new publications released. Available online and and French, with equivalent terms in 18 additional languages. once a month by email. Also known as theInternational Electrotechnical Vocabulary (IEV) online. IEcCustomerServiceCentre-webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: [email protected]. Apropos del'IEC La Commission Electrotechnique Internationale (IEC) est la premiere organisation mondiale qui élabore et publie des Normes internationales pourtout cequiatrait a I'électricite,aiélectronique etauxtechnologies apparentees Aproposdes publicationsIEc Le contenu technique des publications IEc est constamment revu. Veuillez vous assurer que vous possedez I'édition la plusrecente,uncorrigendumouamendementpeutavoirétepublié. Recherchedepublications IEC - IEC onlinecollection-oc.iec.ch Decouvrez notre puissant moteur de recherche et consultez webstore.iec.ch/advsearchform La rechercheavancéepermetde trouverdes publications IEc gratuitement tous les apercus des publications. Avec un en utilisant differents criteres (numero de reference, texte, abon