IEC 61158-6-26:2019
(Main)Industrial communication networks - Fieldbus specifications - Part 6-26: Application layer protocol specification - Type 26 elements
Industrial communication networks - Fieldbus specifications - Part 6-26: Application layer protocol specification - Type 26 elements
IEC 61158-6-26:2019 provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to Type 2 fieldbus. The term “time-critical” is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty. Failure to complete specified actions within the time window risks failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life.
This International Standard specifies interactions between remote applications and defines the externally visible behavior provided by the Type 2 fieldbus application layer. The purpose of this document is to define the protocol provided to
a) define the wire-representation of the service primitives defined in this document, and
b) define the externally visible behavior associated with their transfer. This document specifies the protocol of the Type 2 fieldbus application layer, in conformance with the OSI Basic Reference Model (ISO/IEC 7498-1) and the OSI application layer structure (ISO/IEC 9545).
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 6-26 : Spécification de protocole de couche d’application - Éléments de type 26
L'IEC 61158-6-26:2019 fournit des éléments communs pour les communications de messagerie prioritaires et non prioritaires élémentaires entre les programmes d’application des environnements d’automatisation et le matériel spécifique au bus de terrain de type 26. On utilise le terme "prioritaire" pour traduire la présence d’une fenêtre temporelle, à l’intérieur de laquelle une ou plusieurs actions spécifiées doivent être terminées avec un niveau de certitude défini. Si les actions spécifiées ne sont pas réalisées dans la fenêtre temporelle, les applications demandant les actions risquent de connaître une défaillance, avec les risques que cela comporte pour les équipements, les installations et éventuellement la vie humaine.
La présente norme définit de manière abstraite le comportement, visible par un observateur externe, assuré par les différents Types de la couche Application de bus de terrain, en termes
a) de syntaxe abstraite définissant les unités de données de protocole de la couche Application, transmises entre les entités d'application en communication,
b) de syntaxe de transfert définissant les unités de données de protocole de la couche Application, transmises entre les entités d'application en communication;
c) de diagramme d'états de contexte d'application définissant le comportement de service d'application observable entre les entités d'application en communication; et
d) de diagrammes d'états de relations d'applications définissant le comportement de communication visible entre les entités d'application en communication.
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IEC 61158-6-26 ®
Edition 1.0 2019-06
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 6-26: Application layer protocol specification – Type 26 elements
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
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International Standards for all electrical, electronic and related technologies.
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IEC 61158-6-26 ®
Edition 1.0 2019-06
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 6-26: Application layer protocol specification – Type 26 elements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.70; 35.110 ISBN 978-2-8322-7016-5
– 2 – IEC 61158-6-26:2019 © IEC 2019
CONTENTS
FOREWORD . 10
INTRODUCTION . 12
1 Scope . 13
1.1 General . 13
1.2 Specifications . 14
1.3 Conformance . 14
2 Normative references . 14
3 Terms, definitions, symbols, abbreviations and conventions . 15
3.1 Terms and definitions from other ISO/IEC standards . 15
3.1.1 Terms and definitions from ISO/IEC 7498-1 . 15
3.1.2 Terms and definitions from ISO/IEC 8822 . 16
3.1.3 Terms and definitions from ISO/IEC 9545 . 16
3.1.4 Terms and definitions from ISO/IEC 8824-1 . 16
3.1.5 Terms and definitions from ISO/IEC 8825-1 . 17
3.2 Type 26 specific terms and definitions . 17
3.3 Abbreviations and symbols . 21
3.4 Conventions . 23
3.4.1 Conventions used in state machines . 23
3.4.2 Convention for abstract syntax description . 24
3.4.3 Convention for reserved bits and octets . 24
3.4.4 Conventions for bit description in octets . 24
4 FAL syntax description . 25
4.1 General . 25
4.2 Overview of Type 26 fieldbus . 26
4.2.1 Application field and Common-memory . 26
4.2.2 Structure of Type 26 protocol . 27
4.2.3 Structure of Type 26 FAL . 28
4.2.4 Data link layer . 29
4.3 Operating principle . 29
4.3.1 Overview . 29
4.3.2 Logical ring maintenance . 30
4.3.3 Node addition . 33
4.3.4 Node in a logical ring . 36
4.3.5 Node drop-out . 36
4.3.6 Data transmission . 37
4.3.7 Data transmission frames . 46
4.4 FAL PDU abstract syntax . 49
4.4.1 Basic abstract syntax . 49
4.4.2 Transparent-msg- PDU . 51
4.4.3 Token-PDU . 51
4.4.4 Participation-req-PDU . 51
4.4.5 Byte-block-read PDUs . 51
4.4.6 Byte-block-write PDUs . 52
4.4.7 Word-block-read PDUs . 52
4.4.8 Word-block-write PDUs . 52
4.4.9 Network-parameter-read PDUs . 52
4.4.10 Network-parameter-write PDUs. 53
4.4.11 Stop-command PDUs . 53
4.4.12 Operation-command PDUs . 53
4.4.13 Profile-read PDUs . 53
4.4.14 Trigger-PDU . 54
4.4.15 Log-data-read PDUs . 54
4.4.16 Log-data-clear PDUs . 54
4.4.17 Message-return PDUs . 54
4.4.18 Vendor-specific-msg PDUs . 55
4.4.19 Start-TK-hld-time-mrmt PDUs . 55
4.4.20 Terminate-TK-hld-time-mrmt PDUs . 55
4.4.21 Start-GP_Comm-sndr-log PDUs . 56
4.4.22 Terminate-GP_Comm-sndr-log PDUs . 56
4.4.23 Set-remote-node-config-para PDUs . 56
4.4.24 Read-rmt-partici-node-mgt-info-para PDUs . 56
4.4.25 Read-rmt- node-mgt-info-para PDUs . 57
4.4.26 Read-rmt-node-set-info-para PDUs . 57
4.4.27 Reset-node PDUs . 57
4.4.28 Cyclic-data PDUs . 57
4.5 Data type assignments . 57
5 Transfer syntax . 59
5.1 Encoding rules . 59
5.1.1 Basic encoding . 59
5.1.2 Fixed length Unsigned encoding . 59
5.1.3 Fixed length BitString encoding . 59
5.1.4 OctetString encoding . 59
5.1.5 SEQUENCE encoding . 60
5.2 PDU elements encoding . 60
5.2.1 FALARHeader . 60
5.2.2 Transparent-msg PDU . 63
5.2.3 Token-PDU . 64
5.2.4 Participation-req-PDU . 65
5.2.5 Byte-block-read PDUs . 66
5.2.6 Byte-block-write PDUs . 67
5.2.7 Word-block-read PDUs . 69
5.2.8 Word-block-write PDUs . 71
5.2.9 Network-parameter-read PDUs . 73
5.2.10 Network-parameter-write PDUs. 76
5.2.11 Stop-command PDUs . 79
5.2.12 Operation-command PDUs . 81
5.2.13 Profile-read PDUs . 83
5.2.14 Trigger-PDU . 85
5.2.15 Log-data-read PDUs . 86
5.2.16 Log-data-clear PDUs . 92
5.2.17 Message-return PDUs . 94
5.2.18 Vendor-specific-msg PDUs . 96
5.2.19 Start-TK-hld-time-mrmt PDUs . 98
5.2.20 Terminate-TK-hld-time-mrmt PDUs . 100
5.2.21 Start-GP_Comm-sndr-log PDUs . 103
5.2.22 Terminate-GP_Comm-sndr-log PDUs . 104
– 4 – IEC 61158-6-26:2019 © IEC 2019
5.2.23 Set-remote-node-config-para PDUs . 107
5.2.24 Read-rmt-partici-node-mgt-info-para PDUs .
...
IEC 61158-6-26 ®
Edition 1.0 2019-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial communication networks – Fieldbus specifications –
Part 6-26: Application layer protocol specification – Type 26 elements
Réseaux de communication industriels – Spécifications des bus de terrain –
Partie 6-26: Spécification de protocole de couche d’application – Éléments de
type 26
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 corrigendum or an amendment might have been published.
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containing more than 22 000 terminological entries in English
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and French, with equivalent terms in 18 additional languages.
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(IEV) online.
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IEC 61158-6-26 ®
Edition 1.0 2019-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial communication networks – Fieldbus specifications –
Part 6-26: Application layer protocol specification – Type 26 elements
Réseaux de communication industriels – Spécifications des bus de terrain –
Partie 6-26: Spécification de protocole de couche d’application – Éléments de
type 26
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.100.70; 35.110 ISBN 978-2-8322-1005-6
– 2 – IEC 61158-6-26:2019 © IEC 2019
CONTENTS
FOREWORD . 10
INTRODUCTION . 12
1 Scope . 13
1.1 General . 13
1.2 Specifications . 14
1.3 Conformance . 14
2 Normative references . 14
3 Terms, definitions, symbols, abbreviations and conventions . 15
3.1 Terms and definitions from other ISO/IEC standards . 15
3.1.1 Terms and definitions from ISO/IEC 7498-1 . 15
3.1.2 Terms and definitions from ISO/IEC 8822 . 16
3.1.3 Terms and definitions from ISO/IEC 9545 . 16
3.1.4 Terms and definitions from ISO/IEC 8824-1 . 16
3.1.5 Terms and definitions from ISO/IEC 8825-1 . 17
3.2 Type 26 specific terms and definitions . 17
3.3 Abbreviations and symbols . 21
3.4 Conventions . 23
3.4.1 Conventions used in state machines . 23
3.4.2 Convention for abstract syntax description . 24
3.4.3 Convention for reserved bits and octets . 24
3.4.4 Conventions for bit description in octets . 24
4 FAL syntax description . 25
4.1 General . 25
4.2 Overview of Type 26 fieldbus . 26
4.2.1 Application field and Common-memory . 26
4.2.2 Structure of Type 26 protocol . 27
4.2.3 Structure of Type 26 FAL . 28
4.2.4 Data link layer . 29
4.3 Operating principle . 29
4.3.1 Overview . 29
4.3.2 Logical ring maintenance . 30
4.3.3 Node addition . 33
4.3.4 Node in a logical ring . 36
4.3.5 Node drop-out . 36
4.3.6 Data transmission . 37
4.3.7 Data transmission frames . 46
4.4 FAL PDU abstract syntax . 49
4.4.1 Basic abstract syntax . 49
4.4.2 Transparent-msg- PDU . 51
4.4.3 Token-PDU . 51
4.4.4 Participation-req-PDU . 51
4.4.5 Byte-block-read PDUs . 51
4.4.6 Byte-block-write PDUs . 52
4.4.7 Word-block-read PDUs . 52
4.4.8 Word-block-write PDUs . 52
4.4.9 Network-parameter-read PDUs . 52
4.4.10 Network-parameter-write PDUs. 53
4.4.11 Stop-command PDUs . 53
4.4.12 Operation-command PDUs . 53
4.4.13 Profile-read PDUs . 53
4.4.14 Trigger-PDU . 54
4.4.15 Log-data-read PDUs . 54
4.4.16 Log-data-clear PDUs . 54
4.4.17 Message-return PDUs . 54
4.4.18 Vendor-specific-msg PDUs . 55
4.4.19 Start-TK-hld-time-mrmt PDUs . 55
4.4.20 Terminate-TK-hld-time-mrmt PDUs . 55
4.4.21 Start-GP_Comm-sndr-log PDUs . 56
4.4.22 Terminate-GP_Comm-sndr-log PDUs . 56
4.4.23 Set-remote-node-config-para PDUs . 56
4.4.24 Read-rmt-partici-node-mgt-info-para PDUs . 56
4.4.25 Read-rmt- node-mgt-info-para PDUs . 57
4.4.26 Read-rmt-node-set-info-para PDUs . 57
4.4.27 Reset-node PDUs . 57
4.4.28 Cyclic-data PDUs . 57
4.5 Data type assignments . 57
5 Transfer syntax . 59
5.1 Encoding rules . 59
5.1.1 Basic encoding . 59
5.1.2 Fixed length Unsigned encoding . 59
5.1.3 Fixed length BitString encoding . 59
5.1.4 OctetString encoding . 59
5.1.5 SEQUENCE encoding . 60
5.2 PDU elements encoding .
...
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