ISO/IEC14543-4-301 IEC OS1 Edition 1.0 2020-06 NTERNATIONAL STANDARD colour inside Information technology - Home Electronic System (HES) architecture Part 4-301: Application protocols for home air conditioners and controllers ISO/IEC14543-4-301:2020-06(en) THISPUBLICATIONISCOPYRIGHTPROTECTED Copyright @ 2020 ISO/lIEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from ISO/IEC copyright or have an enquiry about obtaining additionai rights to this publication, please contact the address below oryourlocal IECmemberNational Committeeforfurtherinformation. IEC Central Office Tel.: +41 22 919 02 11 3, rue de Varembé info@iec.ch 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 InternationalStandardsforallelectrical,electronicandrelatedtechnologies 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. IECpublications search-webstore.iec.ch/advsearchform Electropedia-www.electropedia.org The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology, varietyof criteria(reference number,text,technical containing more than 22 000 terminological entries in English committee,..). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages. and withdrawn publications. Also known as the International Electrotechnical Vocabulary (IEV) online. IEC Just Published -webstore.iec.ch/justpublished Stay up to date on all new IEC publications. Just Published IEc Glossary - std.iec.ch/glossary details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and once a month by email. French extracted from the Terms and Definitions clause of IEC publications issued since 2002. Some entries have been IECCustomerServiceCentre-webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and If you wish to give us your feedback on this publication or CISPR. needfurtherassistance,please contact the Customer Service Centre: sales@iec.ch.