IEC 61158-6-4:2019
(Main)Industrial communication networks - Fieldbus specifications - Part 6-4: Application layer protocol specification - Type 4 elements
Industrial communication networks - Fieldbus specifications - Part 6-4: Application layer protocol specification - Type 4 elements
IEC 61158-6-4:2019 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).
This third edition includes the following significant technical changes with respect to the previous edition:
a) additional user parameters to services;
b) additional services to support distributed objects;
c) additional secure services.
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 6-4: Spécification du protocole de la couche application - Eléments de type 4
l’IEC 61158-6-4:2019 fournit des éléments communs pour les communications à temps critique ou non entre des programmes d’application dans un environnement et avec un matériel d’automation spécifiques aux bus de terrain de type 4. Le terme "en temps critique" signale l'existence d'une fenêtre temporelle dans laquelle des actions spécifiées doivent être exécutées, avec un niveau de certitude défini. La non-réalisation des actions spécifiées dans la fenêtre temporelle induit un risque de défaillance des applications qui demandent ces actions, avec les risques relatifs à l'équipement, les installations et éventuellement la vie humaine.
La présente norme internationale spécifie les interactions entre les applications distantes et définit le comportement, visible par un observateur externe, assuré par la couche Application de bus de terrain de type 4, en termes
a) de syntaxe abstraite formelle définissant les unités de données de protocole de couche Application, acheminées entre les entités d'application en communication;
b) de syntaxe de transfert définissant les règles de codage qui s'appliquent aux unités de données de protocole de couche Application;
c) de diagramme d'états de contexte d'application définissant le comportement de service d'application observable entre les entités d'application en communication;
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 61158-6-4 ®
Edition 3.0 2019-06
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 6-4: Application layer protocol specification – Type 4 elements
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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International Standards for all electrical, electronic and related technologies.
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IEC 61158-6-4 ®
Edition 3.0 2019-06
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 6-4: Application layer protocol specification – Type 4 elements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.70; 35.110 ISBN 978-2-8322-7009-7
– 2 – IEC 61158-6-4:2019 © IEC 2019
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
1.1 General . 8
1.2 Specifications . 8
1.3 Conformance . 9
2 Normative references . 9
3 Terms, definitions, symbols, abbreviations and conventions . 9
3.1 Referenced terms and definitions . 10
3.1.1 ISO/IEC 7498-1 terms . 10
3.1.2 ISO/IEC 8822 terms . 10
3.1.3 ISO/IEC 9545 terms . 10
3.1.4 ISO/IEC 8824-1 terms . 10
3.1.5 Fieldbus data-link layer terms . 10
3.2 Abbreviations and symbols . 11
3.3 Conventions . 11
3.3.1 General concept . 11
3.3.2 Conventions for state machines for Type 4 . 12
4 FAL syntax description . 13
4.1 FAL-AR PDU abstract syntax . 13
4.1.1 General . 13
4.1.2 Abstract syntax of APDU header . 13
4.1.3 Abstract syntax of APDU body . 14
4.2 Data types . 16
5 Transfer syntaxes . 16
5.1 APDU encoding . 16
5.1.1 APDU Header encoding . 16
5.1.2 APDU body encoding . 18
5.2 Variable object encoding and packing . 20
5.2.1 Encoding of simple variables . 20
5.2.2 Encoding of constructed variables . 21
5.2.3 Alignment . 22
5.2.4 Variable object attributes . 23
5.3 Error codes . 24
6 FAL protocol state machines . 25
7 AP-context state machine . 26
8 FAL service protocol machine (FSPM) . 27
8.1 Primitives exchanged between FAL User and FSPM . 27
8.2 FSPM states . 27
8.2.1 General . 27
8.2.2 FSPM proxy object states . 27
8.2.3 FSPM real object state machine description . 32
9 Application relationship protocol machine (ARPM) . 34
9.1 Primitives exchanged between ARPM and FSPM . 34
9.2 ARPM States . 34
9.2.1 General . 34
9.2.2 Sender state transitions . 34
9.2.3 Receiver state transitions . 35
10 DLL mapping protocol machine (DMPM) . 36
10.1 Data-link Layer service selection. 36
10.1.1 General . 36
10.1.2 DL-UNITDATA request . 36
10.1.3 DL-UNITDATA indication . 36
10.1.4 DL-UNITDATA response . 36
10.1.5 DLM-Set primitive and parameters . 36
10.1.6 DLM-Get primitive and parameters . 36
10.2 Primitives exchanged between ARPM and DLPM . 36
10.3 Primitives exchanged between DLPM and data-link layer . 37
10.4 DLPM states . 37
10.4.1 States . 37
10.4.2 Sender state transitions . 38
10.4.3 Receiver state transitions . 39
11 Protocol options. 39
Bibliography . 40
Figure 1 – State transition diagram . 12
Figure 2 – APDU header structure . 16
Figure 3 –Subfields of ControlStatus for Request . 17
Figure 4 – Subfields of ControlStatus for Response with error . 17
Figure 5 – Subfields of ControlStatus for Response with no error . 18
Figure 6 – DataFieldFormat encoding . 18
Figure 7 – Structure of request APDU body . 19
Figure 8 – Structure of response APDU body . 19
Figure 9 – Variable identifier . 19
Figure 10 – Code subfield of variable identifier . 19
Figure 11 – Sequence of data in the APDU body subfield . 21
Figure 12 – MSG consists of APDU header and APDU body . 22
Figure 13 – Summary of FAL architecture . 26
Figure 14 – FSPM proxy object state machine . 28
Figure 15 – FSPM real object state machine . 33
Figure 16 – ARPM state machine . 34
Figure 17 – DLPM state machine . 37
Table 1 – State machine description elements . 12
Table 2 – APDU header . 13
Table 3 – APDU body . 15
Table 4 – Transfer syntax for Array . 23
Table 5 – Transfer syntax for Structure . 23
Table 6 – Common variable object attributes . 23
Table 7 – Variable type identifiers . 24
Table 8 – FIFO variable object attributes . 24
– 4 – IEC 61158-6-4:2019 © IEC 2019
Table 9 – Error codes . 25
Table 10 – Primitives exchanged between FAL-User and FSPM . 27
Table 11 – REQUEST.req FSPM constraints . 28
Table 12 – REQUEST.req FSPM actions . 29
Table 13 – RESPONSE.cnf FSPM constraints . 30
Table 14 – RESPONSE.cnf FSPM ac
...
IEC 61158-6-4 ®
Edition 3.0 2019-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial communication networks – Fieldbus specifications –
Part 6-4: Application layer protocol specification – Type 4 elements
Réseaux de communication industriels – Spécifications des bus de terrain –
Partie 6-4: Spécification du protocole de la couche application – Eléments
de type 4
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
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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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Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
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
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IEC 61158-6-4 ®
Edition 3.0 2019-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial communication networks – Fieldbus specifications –
Part 6-4: Application layer protocol specification – Type 4 elements
Réseaux de communication industriels – Spécifications des bus de terrain –
Partie 6-4: Spécification du protocole de la couche application – Eléments
de type 4
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.100.70; 35.110 ISBN 978-2-8322-9702-5
– 2 – IEC 61158-6-4:2019 © IEC 2019
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
1.1 General . 8
1.2 Specifications . 8
1.3 Conformance . 9
2 Normative references . 9
3 Terms, definitions, symbols, abbreviations and conventions . 9
3.1 Referenced terms and definitions . 10
3.1.1 ISO/IEC 7498-1 terms . 10
3.1.2 ISO/IEC 8822 terms . 10
3.1.3 ISO/IEC 9545 terms . 10
3.1.4 ISO/IEC 8824-1 terms . 10
3.1.5 Fieldbus data-link layer terms . 10
3.2 Abbreviations and symbols . 11
3.3 Conventions . 11
3.3.1 General concept . 11
3.3.2 Conventions for state machines for Type 4 . 12
4 FAL syntax description . 13
4.1 FAL-AR PDU abstract syntax . 13
4.1.1 General . 13
4.1.2 Abstract syntax of APDU header . 13
4.1.3 Abstract syntax of APDU body . 14
4.2 Data types . 16
5 Transfer syntaxes . 16
5.1 APDU encoding . 16
5.1.1 APDU Header encoding . 16
5.1.2 APDU body encoding . 18
5.2 Variable object encoding and packing . 20
5.2.1 Encoding of simple variables . 20
5.2.2 Encoding of constructed variables . 21
5.2.3 Alignment . 22
5.2.4 Variable object attributes . 23
5.3 Error codes . 24
6 FAL protocol state machines . 25
7 AP-context state machine . 26
8 FAL service protocol machine (FSPM) . 27
8.1 Primitives exchanged between FAL User and FSPM . 27
8.2 FSPM states . 27
8.2.1 General . 27
8.2.2 FSPM proxy object states . 27
8.2.3 FSPM real object state machine description . 32
9 Application relationship protocol machine (ARPM) . 34
9.1 Primitives exchanged between ARPM and FSPM . 34
9.2 ARPM States . 34
9.2.1 General . 34
9.2.2 Sender state transitions . 34
9.2.3 Receiver state transitions . 35
10 DLL mapping protocol machine (DMPM) . 36
10.1 Data-link Layer service selection. 36
10.1.1 General . 36
10.1.2 DL-UNITDATA request . 36
10.1.3 DL-UNITDATA indication . 36
10.1.4 DL-UNITDATA response . 36
10.1.5 DLM-Set primitive and parameters . 36
10.1.6 DLM-Get primitive and parameters . 36
10.2 Primitives exchanged between ARPM and DLPM . 36
10.3 Primitives exchanged between DLPM and data-link layer . 37
10.4 DLPM states . 37
10.4.1 States . 37
10.4.2 Sender state transitions . 38
10.4.3 Receiver state transitions . 39
11 Protocol options. 39
Bibliography . 40
Figure 1 – State transition diagram . 12
Figure 2 – APDU header structure . 16
Figure 3 – Subfields of ControlStatus for Request . 17
Figure 4 – Subfields of ControlStatus for Response with error . 17
Figure 5 – Subfields of ControlStatus for Response with no error . 18
Figure 6 – DataFieldFormat encoding . 18
Figure 7 – Structure of request APDU body . 19
Figure 8 – Structure of response APDU body . 19
Figure 9 –
...
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