1、 PUBLICLY AVAILABLE SPECIFICATION IEC PAS 62406 First edition2005-08 Real-time Ethernet TCnet(Time-Critical Control Network)Reference number IEC/PAS 62406:2005(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numbering As
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8、imited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.PUBLICLY AVAILABLE SPECIFICATIONIEC PAS 62406 First edition2005-08 Real-time Ethernet TCnet(Time-Critical Control Network)PRICE CODE IEC 2005 Copyright-all rights reserved No part of this publication may be
9、 reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41
10、22 919 03 00 E-mail:inmailiec.ch Web:www.iec.ch XG For price,see current catalogue Commission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 PAS 62406 IEC:2005
11、(E)CONTENTS FOREWORD.9 1 Introduction.11 1.1 General.11 1.2 Nomenclature for references within this PAS.12 2 Scope.12 2.1 Field of applications.12 2.2 Scope and objectives.13 3 Normative references.14 4 Terms and definitions.14 5 Symbols and abbreviations.14 6 Data Link Layer Service definitions.15
12、6.1 Introduction.15 6.2 Scope.15 6.2.1 Overview.15 6.2.2 Specifications.16 6.2.3 Conformance.16 6.3 Void.17 6.4 Terms and definitions.17 6.5 Symbols and abbreviations.18 6.5.1 Common symbols and abbreviations.18 6.5.2 DLC DL-connection.18 6.5.3 RTE-TCnet:Additional symbols and abbreviations.18 6.6 C
13、onventions.19 6.6.1 General conventions.19 6.6.2 Additional convention.20 6.7 Data link service and concept.20 6.7.1 General description of services.20 6.7.2 Time critical cyclic data service.26 6.7.3 Detail description of Sporadic Message Data service.29 6.8 DL-management services.31 6.8.1 General.
14、31 6.8.2 Facilities of the DL-Management service.31 6.8.3 Service of the DL-management.31 Overview of interactions.33 6.8.4 Detail specification of service and interactions.34 7 Data Link Layer Protocol specification.44 7.1 Introduction.44 7.2 Scope.45 7.2.1 Overview.45 7.2.2 Specifications.45 7.2.3
15、 Procedures.45 7.2.4 Applicability.46 7.2.5 Conformance.46 7.3 Void.46 7.4 Terms and definitions.46 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.PAS 62406 IEC:2005(E)3 7.5 Symbols and abbreviations.47 7.5.1 Common symbols and abbrev
16、iations.47 7.5.2 RTE-TCnet:Additional symbols and abbreviations.48 7.6 Overview of the DL-protocol.49 7.6.1 Overview of the media access control.49 7.6.2 Service assumed from the PhL.50 7.6.3 DLL architecture.51 7.6.4 Access Control Machine and schedule support functions.52 7.6.5 Local parameters,variable,counters,timers.53 7.7 General structure and encoding of PhIDUs and DLPDU and related elements of procedure.61 7.7.1 Overview.61 7.7.2 PhIDU structure and encoding.61 7.7.3 Common MAC frame str
