IEC PAS 62406:2005
(Main)Real-time Ethernet TCnet (Time-Critical Control Network)
Real-time Ethernet TCnet (Time-Critical Control Network)
specifies the protocol set necessary for RTE-TCnet, specifically of the Data Link layer and the Application layer, which is mapped on top of the Data Link layer to exploit the services in terms of the "three-layer" Fieldbus Reference Model which is based in part on the OSI Basic Reference Model. Both Reference Models subdivide the area of standardization for interconnection into a series of layers of specification, each of manageable size
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IEC
AVAILABLE
PAS 62406
SPECIFICATION
First edition
2005-08
Real-time Ethernet TCnet
(Time-Critical Control Network)
Reference number
IEC/PAS 62406:2005(E)
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PUBLICLY
IEC
AVAILABLE
PAS 62406
SPECIFICATION
First edition
2005-08
Real-time Ethernet TCnet
(Time-Critical Control Network)
IEC 2005 Copyright - all rights reserved
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 the publisher.
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– 2 – PAS 62406 © IEC:2005 (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
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 Conventions .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 .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 Procedures .45
7.2.4 Applicability .46
7.2.5 Conformance .46
7.3 Void .46
7.4 Terms and definitions .46
PAS 62406 © IEC:2005 (E) – 3 –
7.5 Symbols and abbreviations .47
7.5.1 Common symbols and abbreviations.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 structure, encoding and elements of procedure .61
7.7.4 Elements of the MAC frame.62
7.7.5 Order of bit transmission .65
7.7.6 Invalid DLPDU .65
7.8 DLPDU-specific structure, encoding and elements of procedure .65
7.8.1 General .65
7.8.2 Synchronization DLPDU (SYN).66
7.8.3 Transmission Complete DLPDU (CMP).71
7.8.4 In-Ring Request DLPDU (REQ) .72
7.8.5 Claim DLPDU (CLM) .73
7.8.6 Command (COM) DLPDU.74
7.8.7 Cyclic data and Cyclic data with transmission complete DLPDU (DT)
and (DT-CMP).75
7.8.8 RAS DLPDU (RAS) .76
7.9 DLE elements of procedure.77
7.9.1 Overall structure .77
7.9.2 Initialization .78
7.9.3 Cyclic transmission TX/RX Control (CTRC).79
7.9.4 Sporadic TX/RX Control （STRC）.83
7.9.5 Access Control Machine (ACM) .86
7.9.6 Redundancy medium control (RMC) .95
7.9.7 Serializer and Deserializer .103
7.9.8 DLL Management protocol.103
8 Application Layer Service definitions.108
8.1 Introduction .108
8.2 Scope.108
8.3 Void .109
8.4 Term and definitions .109
8.4.1 ISO/IEC 7498-1 terms .109
8.4.2 ISO/IEC 8822 terms .109
8.4.3 ISO/IEC 9545 terms .110
8.4.4 ISO/IEC 8824-1 terms .110
8.4.5 Fieldbus Data Link Layer terms .110
8.4.6 Fieldbus Application Layer terms.110
8.4.7 RTE-TCnet specific terms .111
– 4 – PAS 62406 © IEC:2005 (E)
8.4.8 Symbols and abbreviations.111
8.4.9 Conventions.112
8.5 Concept .112
8.5.1 Overview .112
8.5.2 Common memory concept .113
8.5.3 Relationship of common memory and AREP .114
8.5.4 Common memory data type.115
8.5.5 RTE-TCnet ASE and services.115
8.6 Common memory ASE.116
8.6.1 Overview .116
8.6.2 Common memory model class specification .116
8.6.3 Service specification of Common memory (CM) ASE .
...
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