IEC 61158-6-23:2019

Industrial communication networks - Fieldbus specifications - Part 6-23: Application layer protocol specification - Type 23 elements

IEC 61158-6-23:2019 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 second edition includes the following significant technical changes with respect to the previous edition:
- addition of the transmission extended mode and related attribute (Clauses 3.2.28, 4.1.9, 4.4, 5.2.9.2, and 5.3);
- update of Table 4, Table 5, Table 16 and Table 48.

Réseaux de communication industriels - Spécifications des bus de terrain - Partie 6-23: Spécification du protocole de la couche application - Eléments de type 23

L’IEC 61158-6-23:2019 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 23. On utilise le terme "prioritaire" pour traduire la présence d’une fenêtre temporelle, à l’intérieur de laquelle il est exigé qu’une ou plusieurs actions spécifiées soient 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.
Le présent document vise à définir le protocole mis en place pour:
a) définir la représentation câblée des primitives de service définies dans l’IEC 61158 5 23, et
b) définir le comportement visible de l’extérieur associé à leur transfert.

General Information

• Status: Published
• Publication Date: 19-Jun-2019
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100.70 - Application 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: 24-Mar-2023

Relations

• Revises: IEC 61158-6-23:2014 - Industrial communication networks - Fieldbus specifications - Part 6-23: Application layer protocol specification - Type 23 elements
• Effective Date: 05-Sep-2023
• Revised: IEC 61158-6-23:2023 - Industrial communication networks - Fieldbus specifications - Part 6-23: Application layer protocol specification - Type 23 elements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61158-6-23 ®
Edition 2.0 2019-06
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 6-23: Application layer protocol specification – Type 23 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
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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About the IEC
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International Standards for all electrical, electronic and related technologies.

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IEC 61158-6-23 ®
Edition 2.0 2019-06
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –

Part 6-23: Application layer protocol specification – Type 23 elements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.70; 35.110 ISBN 978-2-8322-7014-1

– 2 – IEC 61158-6-23:2019 © IEC 2019
CONTENTS
FOREWORD . 9
INTRODUCTION . 11
1 Scope . 13
1.1 General . 13
1.2 Specifications . 14
1.3 Conformance . 14
2 Normative references . 14
3 Terms, definitions, symbols, abbreviated terms and conventions . 15
3.1 Referenced terms and definitions . 15
3.1.1 ISO/IEC 7498-1 terms . 15
3.1.2 ISO/IEC 8822 terms . 15
3.1.3 ISO/IEC 9545 terms . 15
3.1.4 ISO/IEC 8824-1 terms . 15
3.1.5 IEC 61158-1 terms . 16
3.2 Additional Type 23 terms and definitions . 16
3.3 Symbols and abbreviated terms . 18
3.4 Conventions . 19
3.4.1 General concept . 19
3.4.2 Convention for the encoding of reserved bits and octets . 19
3.4.3 Conventions for abstract syntax description . 19
3.4.4 Conventions for bit description in octets . 20
3.4.5 Conventions for state machine descriptions . 20
4 FAL syntax description . 21
4.1 FALPDU type C abstract syntax . 21
4.1.1 Basic abstract syntax . 21
4.1.2 Connect-PDU . 22
4.1.3 ConnectAck-PDU . 22
4.1.4 Scan-PDU . 22
4.1.5 Collect-PDU . 23
4.1.6 Select-PDU . 23
4.1.7 Launch-PDU . 23
4.1.8 Token-PDU . 23
4.1.9 MyStatus-PDU . 24
4.1.10 Transient1-PDU . 24
4.1.11 Dummy-PDU . 25
4.1.12 Transient2-PDU . 25
4.1.13 NTNTest-PDU . 25
4.1.14 CyclicDataW-PDU. 26
4.1.15 CyclicDataB-PDU . 26
4.1.16 CyclicDataOut1-PDU . 26
4.1.17 CyclicDataOut2-PDU . 27
4.1.18 CyclicDataIn1-PDU . 27
4.1.19 CyclicDataIn2-PDU . 27
4.2 FALPDU type F abstract syntax . 28
4.2.1 Basic abstract syntax . 28
4.2.2 Persuasion-PDU . 29
4.2.3 TestData-PDU . 30

4.2.4 TestDataAck-PDU. 30
4.2.5 Setup-PDU . 31
4.2.6 SetupAck-PDU . 31
4.2.7 F-Token-PDU . 32
4.2.8 F-MyStatus-PDU . 32
4.2.9 Measure-PDU . 32
4.2.10 F-Offset-PDU . 33
4.2.11 F-Update-PDU . 33
4.2.12 F-CyclicData-PDU . 33
4.2.13 Transient1-PDU . 33
4.2.14 TransientAck-PDU . 36
4.2.15 Transient2-PDU . 37
4.2.16 ParamCheck-PDU . 37
4.2.17 Parameter-PDU . 38
4.2.18 Timer-PDU . 39
4.3 Data type assignments for type C . 39
4.4 Data type assignments for type F . 40
5 FAL transfer syntax . 41
5.1 Encoding rules . 41
5.1.1 Unsigned encoding . 41
5.1.2 Octet string encoding . 41
5.1.3 SEQUENCE encoding . 42
5.1.4 LOctetString encoding . 42
5.2 FALPDU type C elements encoding . 42
5.2.1 FALARHeader . 42
5.2.2 Connect-PDU . 44
5.2.3 ConnectAck-PDU . 45
5.2.4 Scan-PDU . 45
5.2.5 Collect-PDU . 46
5.2.6 Select-PDU . 48
5.2.7 Launch-PDU . 49
5.2.8 Token-PDU . 49
5.2.9 MyStatus-PDU . 49
5.2.10 Transient1-PDU . 51
5.2.11 Dummy-PDU . 55
5.2.12 Transient2-PDU . 56
5.2.13 NTNTest-PDU . 67
5.2.14 CyclicDataW-PDU. 67
5.2.15 CyclicDataB-PDU . 68
5.2.16 CyclicDataOut1-PDU . 69
5.2.17 CyclicDataOut2-PDU . 69
5.2.18 CyclicDataIn1-PDU . 70
5.2.19 CyclicDataIn2-PDU . 71
5.3 FALPDU type F elements encoding . 72
5.3.1 FALARHeader . 72
5.3.2 Persuasion-PDU . 76
5.3.3 TestData-PDU . 77
5.3.4 TestDataAck-PDU. 77
5.3.5 Setup-PDU .
...

IEC 61158-6-23 ®
Edition 2.0 2019-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial communication networks – Fieldbus specifications –
Part 6-23: Application layer protocol specification – Type 23 elements

Réseaux de communication industriels – Spécifications des bus de terrain –
Partie 6-23: Spécification du protocole de la couche application – Eléments
de type 23
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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IEC 61158-6-23 ®
Edition 2.0 2019-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial communication networks – Fieldbus specifications –

Part 6-23: Application layer protocol specification – Type 23 elements

Réseaux de communication industriels – Spécifications des bus de terrain –

Partie 6-23: Spécification du protocole de la couche application – Eléments

de type 23
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.100.70; 35.110 ISBN 978-2-8322-9327-0

– 2 – IEC 61158-6-23:2019 © IEC 2019
CONTENTS
FOREWORD . 9
INTRODUCTION . 11
1 Scope . 13
1.1 General . 13
1.2 Specifications . 14
1.3 Conformance . 14
2 Normative references . 14
3 Terms, definitions, symbols, abbreviated terms and conventions . 15
3.1 Referenced terms and definitions . 15
3.1.1 ISO/IEC 7498-1 terms . 15
3.1.2 ISO/IEC 8822 terms . 15
3.1.3 ISO/IEC 9545 terms . 15
3.1.4 ISO/IEC 8824-1 terms . 15
3.1.5 IEC 61158-1 terms . 16
3.2 Additional Type 23 terms and definitions . 16
3.3 Symbols and abbreviated terms . 18
3.4 Conventions . 19
3.4.1 General concept . 19
3.4.2 Convention for the encoding of reserved bits and octets . 19
3.4.3 Conventions for abstract syntax description . 19
3.4.4 Conventions for bit description in octets . 20
3.4.5 Conventions for state machine descriptions . 20
4 FAL syntax description . 21
4.1 FALPDU type C abstract syntax . 21
4.1.1 Basic abstract syntax . 21
4.1.2 Connect-PDU . 22
4.1.3 ConnectAck-PDU . 22
4.1.4 Scan-PDU . 22
4.1.5 Collect-PDU . 23
4.1.6 Select-PDU . 23
4.1.7 Launch-PDU . 23
4.1.8 Token-PDU . 23
4.1.9 MyStatus-PDU . 24
4.1.10 Transient1-PDU . 24
4.1.11 Dummy-PDU . 25
4.1.12 Transient2-PDU . 25
4.1.13 NTNTest-PDU . 25
4.1.14 CyclicDataW-PDU. 26
4.1.15 CyclicDataB-PDU . 26
4.1.16 CyclicDataOut1-PDU . 26
4.1.17 CyclicDataOut2-PDU . 27
4.1.18 CyclicDataIn1-PDU . 27
4.1.19 CyclicDataIn2-PDU . 27
4.2 FALPDU type F abstract syntax . 28
4.2.1 Basic abstract syntax . 28
4.2.2 Persuasion-PDU . 29
4.2.3 TestData-PDU . 30

4.2.4 TestDataAck-PDU. 30
4.2.5 Setup-PDU . 31
4.2.6 SetupAck-PDU . 31
4.2.7 F-Token-PDU . 32
4.2.8 F-MyStatus-PDU . 32
4.2.9 Measure-PDU . 32
4.2.10 F-Offset-PDU . 33
4.2.11 F-Update-PDU . 33
4.2.12 F-CyclicData-PDU . 33
4.2.13 Transient1-PDU . 33
4.2.14 TransientAck-PDU . 36
4.2.15 Transient2-PDU . 37
4.2.16 ParamCheck-PDU . 37
4.2.17 Parameter-PDU . 38
4.2.18 Timer-PDU . 39
4.3 Data type assignments for type C . 39
4.4 Data type assignments for type F . 40
5 FAL transfer syntax . 41
5.1 Encoding rules . 41
5.1.1 Unsigned encoding . 41
5.1.2 Octet string encoding . 41
5.1.3 SEQUENCE encoding . 42
5.1.4 LOctetString encoding . 42
5.2 FALPDU type C elements encoding . 42
5.2.1 FALARHeader . 42
5.2.2 Connect-PDU .
...