BS EN IEC 62541-9:2020 BSl Standards Publication OPC Unified Architecture Part 9: Alarms and Conditions bsi. BSENIEC 62541-9:2020 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN IEC 62541-9:2020. It is identical to IEC 62541-9:2020. It supersedes BS EN 62541-9:2015, which will be withdrawn on 17 February 2021. The UK participation in its preparation was entrusted to Technical Committee GEL/65/3, Industrial communications: process measurement and control, including fieldbus. A list of organizations represented on this committee can be obtained on request to its committee manager. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @ The British Standards Institution 2020 Published by BSI Standards Limited 2020 ISBN 978 0 580 51138 7 ICS 25.040.40; 35.100.05; 35.100 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2020. Amendments/corrigenda issued since publication Date Text affected BSENIEC 62541-9:2020 EN IEC 62541-9 EUROPEANSTANDARD NORMEEUROPEENNE EUROPAISCHE NORM August2020 ICS 35.100.05; 25.040.40 Supersedes EN 62541-9:2015 and all of its amendments and corrigenda (if any) English Version OPC Unified Architecture - Part 9: Alarms and Conditions (IEC 62541-9:2020) Architecture unifiée OPC - Partie 9: Alarmes et Conditions OPC Unified Architecture - Teil 9: Alarme und Zustande (IEC 62541-9:2020) (IEC 62541-9:2020) This European Standard was approved by CENELEC on 2020-07-23. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC ManagementCentreortoanyCENELECmember. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notifiedto the CEN-CENELEC Management Centre has the same status as theofficial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comite Européen de Normalisation Electrotechnique Europaisches Komitee fur Elektrotechnische Normung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels @ 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN IEC 62541-9:2020 E