IEC 61158-4-7:2007
(Main)Industrial communication networks - Fieldbus specifications - Part 4-7: Data-link layer protocol specification - Type 7 elements
Industrial communication networks - Fieldbus specifications - Part 4-7: Data-link layer protocol specification - Type 7 elements
IEC 61158-4-7:2007 describes the data-link layer which provides basic time-critical messaging communications between devices in an automation environment. It specifies the procedures for the timely transfer of data and control information from one data-link user entity to a peer user entity, and among the data-link entities forming the distributed data-link service provider. This first edition and its companion parts of the IEC 61158-4 subseries cancel and replace IEC 61158-4:2003 and constitutes an editorial revision. It includes the following changes:
- deletion of the former Type 6 fieldbus, and the placeholder for a Type 5 fieldbus data link layer, for lack of market relevance;
- addition of new types of fieldbuses;
- division of this part into multiple parts numbered -4 1, -4 2,..., -4-19. This bilingual version (2013-09) corresponds to the monolingual English version, published in 2007-12.
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 4-7: Spécification de protocole de la couche de liaison de données - Éléments de Type 7
La CEI 61158-4-7:2007 décrit la couche de liaison de données assure les communications de messagerie de base en temps critique entre des dispositifs dans un environnement d'automation. Elle spécifie les procédures de transfert opportun des données et des informations de commande entre une entité utilisateur de liaison de données et une entité utilisateur homologue, mais aussi parmi les entités de liaison de données formant le fournisseur de service de liaison de données distribué. Cette première édition et ses parties associées de la sous-série CEI 61158-4 annulent et remplacent la CEI 61158-4:2003. Elle comporte les modifications suivantes:
- suppression du précédent bus de terrain Type 6 et du "placeholder" (réceptacle) pour une couche de liaison de données de bus de terrain Type 5, en raison du manque de pertinence commerciale;
- ajout de nouveaux types de bus de terrain;
- division de la présente partie en plusieurs parties numérotées -4 1, -4 2,..., -4-19. La présente version bilingue (2013-09) correspond à la version anglaise monolingue publiée en 2007-12.
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IEC 61158-4-7
Edition 1.0 2007-12
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 4-7: Data-link layer protocol specification – Type 7 elements
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 61158-4-7
Edition 1.0 2007-12
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 4-7: Data-link layer protocol specification – Type 7 elements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XE
ICS 35.100.20; 25.040.40 ISBN 2-8318-9434-4
– 2 – 61158-4-7 © IEC:2007(E)
CONTENTS
FOREWORD.6
INTRODUCTION.8
1 Scope.9
1.1 General .9
1.2 Specifications.9
1.3 Procedures.9
1.4 Applicability.9
1.5 Conformance.9
2 Normative references .10
3 Terms, definitions, symbols and abbreviations.10
3.1 Reference model terms and definitions.10
3.2 Service convention terms and definitions.11
3.3 Other terms and definitions .12
3.4 Symbols and abbreviations.16
4 Overview of the DL-protocol .18
4.1 Overall description of medium allocation .18
4.2 Types of entities.20
4.3 Addressing .23
4.4 Flow control.29
4.5 Graphical representation .31
5 General structure and encoding of PhIDUs and DLPDUs and related elements of
procedure.32
5.1 DLPDU formats and components.32
5.2 Description of each DLPDU component .32
5.3 PhIDU structure and encoding.36
5.4 Common DLPDU structure, encoding and elements of procedure .37
5.5 Valid DLPDU types.37
5.6 DLL timers.39
6 DLPDU-specific structure, encoding and element of procedure.43
6.1 General .43
6.2 Buffer read .43
6.3 Buffer write.44
6.4 Buffer transfer .44
6.5 Specified explicit request.45
6.6 Free explicit request.50
6.7 Messaging.53
6.8 Acknowledged messaging .58
6.9 Numbering of acknowledged messages.62
6.10 Behavior with mismatched parameters .64
7 DL-service elements of procedure, interfaces and conformance .66
7.1 General .66
7.2 Producer/consumer entity.67
7.3 Protocol elements by service.70
7.4 Bus arbitrator operation.77
7.5 Bridges.85
7.6 Interfaces .92
61158-4-7 © IEC:2007(E) – 3 –
7.7 Conformance.94
Annex A (informative) Exemplary FCS implementation.97
Annex B (informative) Object modeling .99
B.1 Modeling of the IDENTIFIER object .99
B.2 Description of the IDENTIFIER object attributes .99
B.3 Modeling of the QUEUE object .103
B.4 Description of the QUEUE object attributes . 103
B.5 Modeling of the BUFFER object.104
B.6 Description of the BUFFER object attributes. 104
Annex C (informative) Topology of multi-segment DL-subnetwork . 106
C.1 Introduction .106
C.2 Global specification .106
C.3 Local specification.107
C.4 Properties .107
C.5 Methods .107
Annex D (informative) Management of transmission errors . 111
D.1 Transmission of RP_DAT_XX .111
D.2 Transmission of a free RP_RQ(1/2) .111
D.3 Transmission of the specified RP_RQ1 . 112
D.4 Transmission of RP_MSG_NOACK.113
D.5 Transmission of RP_MSG_ACK.115
Bibliography.118
Figure 1 – Relationships of DLSAPs, DLSAP-addresses and group DL-addresses .13
Figure 2 – General description of medium allocation.19
Figure 3 – Internal structure of a producer/consumer entity.20
Figure 4 – Associated buffers and queues .22
Figure 5 – Internal structure of a bus arbitrator .23
Figure 6 – Polling BA Table .23
Figure 7 – Addressing scheme.24
Figure 8 – Address partitioning .26
Figure 9 – Structure of an individual physical address .27
Figure 10 – Structure of an individual logical address .27
Figure 11 – Structure of restricted physical group address.27
Figure 12 – Structure of a restricted logical group address .28
Figure 13 – Structure of a generalized group address .28
Figure 14 – Summary of address structure.29
Figure 15 – Example of an evaluation net .31
Figure 16 – Basic DLPDU structure.32
Figure 17 – DLPDU transmission / reception order.32
Figure 18 – Identifier DLPDU .38
Figure 19 – Variable response DLPDU.38
Figure 20 – Request response DLPDU.38
Figure 21 – Message response DLPDU.39
Figure 22 – Acknowledgement response DLPDU .39
– 4 – 61158-4-7 © IEC:2007(E)
Figure 23 – End of message transaction response DLPDU .39
Figure 24 – Buffer reading service interactions .44
Figure 25 – Buffer writing service interactions.44
Figure 26 – Buffer transfer service interactions .44
Figure 27 – Buffer transfer DLPDU sequence .45
Figure 28 – Interactions within the specified explicit request for buffer transfer service
in the aperiodic window.46
Figure 29 – Interactions within the specified explicit request for buffer transfer service
in the periodic window.47
Figure 30 – DLPDU sequence for an explicit request for a transfer .48
Figure 31 – Evaluation network for a buf
...
IEC 61158-4-7 ®
Edition 1.0 2007-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial communication networks – Fieldbus specifications –
Part 4-7: Data-link layer protocol specification – Type 7 elements
Réseaux de communication industriels – Spécifications des bus de terrain –
Partie 4-7: Spécification de protocole de la couche de liaison de données –
Éléments de Type 7
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
either IEC or IEC's member National 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, please contact the address below or
your local IEC member National Committee for further information.
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About the IEC
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International Standards for all 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 corrigenda or an amendment might have been published.
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IEC 61158-4-7 ®
Edition 1.0 2007-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial communication networks – Fieldbus specifications –
Part 4-7: Data-link layer protocol specification – Type 7 elements
Réseaux de communication industriels – Spécifications des bus de terrain –
Partie 4-7: Spécification de protocole de la couche de liaison de données –
Éléments de Type 7
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XE
CODE PRIX
ICS 25.040.40; 35.100.20 ISBN 978-2-8322-1020-8
– 2 – 61158-4-7 IEC:2007
CONTENTS
FOREWORD . 6
INTRODUCTION . 7
1 Scope . 9
1.1 General . 9
1.2 Specifications . 9
1.3 Procedures . 9
1.4 Applicability . 9
1.5 Conformance . 9
2 Normative references . 10
3 Terms, definitions, symbols and abbreviations . 10
3.1 Reference model terms and definitions . 10
3.2 Service convention terms and definitions . 11
3.3 Other terms and definitions . 12
3.4 Symbols and abbreviations . 16
4 Overview of the DL-protocol . 18
4.1 Overall description of medium allocation . 18
4.2 Types of entities . 20
4.3 Addressing . 23
4.4 Flow control. 29
4.5 Graphical representation . 31
5 General structure and encoding of PhIDUs and DLPDUs and related elements of
procedure . 32
5.1 DLPDU formats and components . 32
5.2 Description of each DLPDU component . 32
5.3 PhIDU structure and encoding . 36
5.4 Common DLPDU structure, encoding and elements of procedure . 37
5.5 Valid DLPDU types . 37
5.6 DLL timers . 39
6 DLPDU-specific structure, encoding and element of procedure . 43
6.1 General . 43
6.2 Buffer read . 43
6.3 Buffer write . 44
6.4 Buffer transfer . 44
6.5 Specified explicit request. 45
6.6 Free explicit request . 50
6.7 Messaging . 53
6.8 Acknowledged messaging . 58
6.9 Numbering of acknowledged messages . 62
6.10 Behavior with mismatched parameters . 64
7 DL-service elements of procedure, interfaces and conformance . 66
7.1 General . 66
7.2 Producer/consumer entity . 67
7.3 Protocol elements by service . 70
7.4 Bus arbitrator operation . 77
7.5 Bridges . 85
7.6 Interfaces . 92
61158-4-7 IEC:2007 – 3 –
7.7 Conformance . 94
Annex A (informative) Exemplary FCS implementation . 97
Annex B (informative) Object modeling . 99
B.1 Modeling of the IDENTIFIER object . 99
B.2 Description of the IDENTIFIER object attributes . 99
B.3 Modeling of the QUEUE object . 103
B.4 Description of the QUEUE object attributes . 103
B.5 Modeling of the BUFFER object. 104
B.6 Description of the BUFFER object attributes . 104
Annex C (informative) Topology of multi-segment DL-subnetwork . 106
C.1 Introduction . 106
C.2 Global specification . 106
C.3 Local specification . 107
C.4 Properties . 107
C.5 Methods . 107
Annex D (informative) Management of transmission errors . 111
D.1 Transmission of RP_DAT_XX . 111
D.2 Transmission of a free RP_RQ(1/2) . 111
D.3 Transmission of the specified RP_RQ1 . 112
D.4 Transmission
...
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