IEC 61158-4-12:2010

Industrial communication networks - Fieldbus specifications - Part 4-12: Data-link layer protocol specification - Type 12 elements

IEC 61158-4-12:2010 specifies procedures for the transfer of data and control information from one data-link user entity to one or more user entity; the structure of the DLPDUs used for the transfer of data and control information by the protocol of this standard, and their representation as physical interface data units. This second edition cancels and replaces the first edition published in 2007 and constitutes a technical revision. The main changes with respect to the previous edition are: bug fixes and editorial improvements. This bilingual version (2012-05) corresponds to the monolingual English version published in 2010-08.

Réseaux de communication industriels - Spécifications de bus de terrain - Partie 4-12: Spécification du protocole de couche de liaison de données - Eléments de type 12

La CEI 61158-4-12:2010 spécifie les procédures de transfert de données et d'informations de commande d'une entité utilisateur de liaison de données vers une ou plusieurs entités utilisateur; la structure des DLPDU utilisées par le protocole de la présente norme pour le transfert des données et des informations de commande, et leur représentation sous forme d'unités de données d'interface physique. Cette seconde édition annule et remplace la première édition publiée en 2007 et constitue une révision technique. Les principales modifications par rapport à l'édition précédente sont la réparation des erreurs et l'amélioration rédactionnelle. La présente version bilingue (2012-05) correspond à la version anglaise monolingue publiée en 2010-08.

General Information

• Status: Published
• Publication Date: 04-Aug-2010
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100.20 - Data link layer
• ICS: 35.110 - Networking
• Technical Committee: SC 65C - Industrial networks
• Drafting Committee: WG 9 - TC 65/SC 65C/WG 9
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 14-Aug-2014

Relations

• Revised: IEC 61158-4-12:2014 - Industrial communication networks - Fieldbus specifications - Part 4-12: Data-link layer protocol specification - Type 12 elements
• Effective Date: 05-Sep-2023
• Revises: IEC 61158-4-12:2007 - Industrial communication networks - Fielbus specifications - Part 4-12: Data-link layer protocol specification - Type 12 elements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61158-4-12 ®
Edition 2.0 2010-08
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Fieldbus specifications –
Part 4-12: Data-link layer protocol specification – Type 12 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 61158-4-12 ®
Edition 2.0 2010-08
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Fieldbus specifications –
Part 4-12: Data-link layer protocol specification – Type 12 elements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XG
ICS 25.04.40; 35.100.20; 35.110 ISBN 978-2-88912-087-1
– 2 – 61158-4-12 © IEC:2010(E)
CONTENTS
FOREWORD.7
INTRODUCTION.9
1 Scope.10
1.1 General .10
1.2 Specifications.10
1.3 Procedures.10
1.4 Applicability.10
1.5 Conformance.10
2 Normative references .11
3 Terms, definitions, symbols and abbreviations.11
3.1 Reference model terms and definitions.11
3.2 Service convention terms and definitions.12
3.3 Common terms and definitions .13
3.4 Additional Type 12 definitions.13
3.5 Common symbols and abbreviations .16
3.6 Additional Type 12 symbols and abbreviations .17
3.7 Conventions .18
4 Overview of the DL-protocol .23
4.1 Operating principle .23
4.2 Topology .23
4.3 Frame processing principles.23
4.4 Data-link layer overview .24
4.5 Error detection overview.25
4.6 Node reference model .25
4.7 Operation overview .26
5 Frame structure .27
5.1 Frame coding principles .27
5.2 Data types and encoding rules .27
5.3 DLPDU structure .29
5.4 Type 12 DLPDU structure.32
5.5 Network variable structure.48
5.6 Type 12 mailbox structure .48
6 Attributes.50
6.1 Management .50
6.2 Statistics .66
6.3 Watchdogs .69
6.4 Slave information interface .72
6.5 Media independent interface (MII) .77
6.6 Fieldbus memory management unit (FMMU).80
6.7 Sync manager .83
6.8 Distributed clock.89
7 DL-user memory.93
7.1 Overview .93
7.2 Mailbox access type .94
7.3 Buffered access type.97

61158-4-12 © IEC:2010(E) – 3 –
8 Type 12: FDL protocol state machines.99
8.1 Overview of slave DL state machines .99
8.2 State machine description .99
Annex A (informative)  Type 12: Additional specifications on DL-Protocol state
machines .107
Bibliography.141

Figure 1 – Type description example .19
Figure 2 – Common structure of specific fields.20
Figure 3 – Frame structure.24
Figure 4 – Mapping of data in a frame.25
Figure 5 – Slave node reference model.26
Figure 6 – Type 12 PDUs embedded in Ethernet frame.27
Figure 7 – Type 12 PDUs embedded in UDP/IP .27
Figure 8 – DL information type description .51
Figure 9 – Address type description.53
Figure 10 – DL control type description.55
Figure 11 – DL status type description .57
Figure 12 – Successful write sequence to DL-user control register .59
Figure 13 – Successful read sequence to the DL-user status register .60
Figure 14 – RX error counter type description .67
Figure 15 – Lost link counter type description .68
Figure 16 – Additional counter type description.69
Figure 17 – Sync configuration type description .70
Figure 18 – Watchdog divider type description.70
Figure 19 – Sync manager watchdog type description.71
Figure 20 – Sync manager watchdog status type description .71
Figure 21 – Watchdog counter type description.72
Figure 22 – Slave information interface access type description .72
Figure 23 – Slave information interface control/status type description .74
Figure 24 – Slave information interface address type description.76
Figure 25 – Slave information interface data type description .77
Figure 26 – MII control/status type description .78
Figure 27 – MII address type description .79
Figure 28 – MII data type description .80
Figure 29 – FMMU mapping example.80
Figure 30 – FMMU entity type description .81
Figure 31 – SyncM mailbox interaction.84
Figure 32 – SyncM buffer allocation.84
Figure 33 – SyncM buffer interaction .85
Figure 34 – Handling of write/read toggle with read mailbox .85
Figure 35 – Sync manager channel type description .87
Figure 36 – Distributed clock local time parameter type description .91
Figure 37 – Successful write sequence to mailbox .94

– 4 – 61158-4-12 © IEC:2010(E)
Figure 38 – Bad write sequence to mailbox.95
Figure 39 – Successful read sequence to mailbox.95
Figure 40 – Bad read sequence to mailbox .96
Figure 41 – Successful write sequence to buffer .97
Figure 42 – Successful read sequence to buffer.98
Figure 43 – Structuring of the protocol machines of an slave .99
Figure 44 – Slave information interface read operation . 101
Figure 45 – Slave information interface write operation. 102
Figure 46 – Slave information interface reload operation . 103
Figure 47 – Distributed clock .
...

IEC 61158-4-12 ®
Edition 2.0 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Fieldbus specifications –
Part 4-12: Data-link layer protocol specification – Type 12 elements

Réseaux de communication industriels – Specifications de bus de terrain –
Partie 4-12: Spécification du protocole de couche de liaison de données –
Eléments de Type 12
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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International Standards for all electrical, electronic and related technologies.

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latest edition, a corrigenda or an amendment might have been published.

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IEC 61158-4-12 ®
Edition 2.0 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Fieldbus specifications –

Part 4-12: Data-link layer protocol specification – Type 12 elements

Réseaux de communication industriels – Specifications de bus de terrain –

Partie 4-12: Spécification du protocole de couche de liaison de données –

Eléments de Type 12
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XG
ICS 25.04.40; 35.100.20; 35.110 ISBN 978-2-88912-942-3

– 2 – 61158-4-12  IEC:2010
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
1.1 General . 10
1.2 Specifications . 10
1.3 Procedures . 10
1.4 Applicability . 10
1.5 Conformance . 10
2 Normative references . 11
3 Terms, definitions, symbols and abbreviations . 11
3.1 Reference model terms and definitions . 11
3.2 Service convention terms and definitions . 12
3.3 Common terms and definitions . 13
3.4 Additional Type 12 definitions . 13
3.5 Common symbols and abbreviations . 16
3.6 Additional Type 12 symbols and abbreviations . 17
3.7 Conventions . 18
4 Overview of the DL-protocol . 23
4.1 Operating principle . 23
4.2 Topology . 23
4.3 Frame processing principles . 23
4.4 Data-link layer overview . 24
4.5 Error detection overview . 25
4.6 Node reference model . 25
4.7 Operation overview . 26
5 Frame structure . 27
5.1 Frame coding principles . 27
5.2 Data types and encoding rules . 27
5.3 DLPDU structure . 29
5.4 Type 12 DLPDU structure . 32
5.5 Network variable structure . 48
5.6 Type 12 mailbox structure . 48
6 Attributes . 50
6.1 Management . 50
6.2 Statistics . 66
6.3 Watchdogs . 69
6.4 Slave information interface . 72
6.5 Media independent interface (MII) . 77
6.6 Fieldbus memory management unit (FMMU) . 80
6.7 Sync manager . 83
6.8 Distributed clock . 89
7 DL-user memory . 93
7.1 Overview . 93
7.2 Mailbox access type . 94
7.3 Buffered access type . 97

61158-4-12  IEC:2010 – 3 –
8 Type 12: FDL protocol state machines . 99
8.1 Overview of slave DL state machines . 99
8.2 State machine description . 99
Annex A (informative)  Type 12: Additional specifications on DL-Protocol state
machines . 107
Bibliography . 141

Figure 1 – Type description example . 19
Figure 2 – Common structure of specific fields . 20
Figure 3 – Frame structure. 24
Figure 4 – Mapping of data in a frame . 25
Figure 5 – Slave node reference model . 26
Figure 6 – Type 12 PDUs embedded in Ethernet frame . 27
Figure 7 – Type 12 PDUs embedded in UDP/IP . 27
Figure 8 – DL information type description . 51
Figure 9 – Address type description . 53
Figure 10 – DL control type description . 55
Figure 11 – DL status type description . 57
Figure 12 – Successful write sequence to DL-user control register . 59
Figure 13 – Successful read sequence to the DL-user status register . 60
Figure 14 – RX error counter type description . 67
Figure 15 – Lost link counter type description . 68
Figure 16 – Additional counter type description . 69
Figure 17 – Sync configuration type description . 70
Figure 18 – Watchdog divider type description . 70
Figure 19 – Sync manager watchdog type description . 71
Figure 20 – Sync manager watchdog status type description . 71
Figure 21 – Watchdog counter type description . 72
Figure 22 – Slave information interface access type description .
...