EN IEC 61158-5-26:2019

SLOVENSKI STANDARD
01-november-2019
Industrijska komunikacijska omrežja - Specifikacije za procesno vodilo - 5-26. del:
Definicija opravil na aplikacijski ravni - Elementi tipa 26 (IEC 61158-5-26:2019)
Industrial communication networks - Fieldbus specifications - Part 5-26: Application layer
service definition - Type 26 elements (IEC 61158-5-26:2019)
Industrielle Kommunikationsnetze - Feldbusse - Teil 5-26: Dienstfestlegungen des
Application Layer (Anwendungsschicht) - Typ 26-Elemente (IEC 61158-5-26:2019)
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 5-26 :
Spécification du protocole de la couche application - Éléments de type 26 (IEC 61158-5-
26:2019)
Ta slovenski standard je istoveten z: EN IEC 61158-5-26:2019
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.70 Uporabniški sloj Application layer
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61158-5-26

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2019
ICS 25.040.40; 35.100.70; 35.110

English Version
Industrial communication networks - Fieldbus specifications -
Part 5-26: Application layer service definition - Type 26 elements
(IEC 61158-5-26:2019)
Réseaux de communication industriels - Spécifications des Industrielle Kommunikationsnetze - Feldbusse - Teil 5-26:
bus de terrain - Partie 5-26 : Spécification du protocole de Dienstfestlegungen des Application Layer
la couche application - Éléments de type 26 (Anwendungsschicht) - Typ 26-Elemente
(IEC 61158-5-26:2019) (IEC 61158-5-26:2019)
This European Standard was approved by CENELEC on 2019-05-23. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61158-5-26:2019 E

European foreword
The text of document 65C/947/FDIS, future edition 1 of IEC 61158-5-26, prepared by SC 65C
"Industrial networks" of IEC/TC 65 "Industrial-process measurement, control and automation" was
submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-02-23
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-05-23
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 61158-5-26:2019 was approved by CENELEC as a
European Standard without any modification.

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 61131-3 -  Programmable controllers - Part 3: EN 61131-3 -
Programming languages
IEC 61158-1 2019 Industrial communication networks - - -
Fieldbus specifications - Part 1: Overview
and guidance for the IEC 61158 and IEC
61784 series
IEC 61158-6-26 2019 Industrial communication networks – EN 61158-6-26 2019
Fieldbus specifications – Part 6-26:
Application layer protocol specification –
Type 26 elements
IEC 61784-2 2019 Industrial communication networks - - -
Profiles - Part 2: Additional fieldbus profiles
for real-time networks based on
ISO/IEC/IEEE 8802-3
ISO/IEC 646 -  Information technology - ISO 7-bit coded - -
character set for information interchange
ISO/IEC 7498-1 -  Information technology - Open Systems - -
Interconnection - Basic Reference Model:
The Basic Model
ISO/IEC/IEEE 8802--  Standard for Ethernet - -
ISO/IEC 8822 -  Information technology - Open Systems - -
Interconnection - Presentation service
definition
ISO/IEC 8824-1 -  Information technology - Abstract Syntax - -
Notation One (ASN.1): Specification of
basic notation
ISO/IEC 9545 -  Information technology - Open Systems - -
Interconnection - Application layer
structure
ISO/IEC 10646 -  Information technology - Universal Coded - -
Character Set (UCS)
Publication Year Title EN/HD Year
ISO/IEC 10731 -  Information technology - Open Systems - -
Interconnection - Basic Reference Model -
Conventions for the definition of OSI
services
ISO/IEC/IEEE -  Information technology - Microprocessor - -
60559 Systems - Floating-Point arithmetic
IETF RFC 768 -  User Datagram Protocol - -
IETF RFC 791 -  Internet Protocol - -
IETF RFC 792 -  Internet Control Message Protocol - -
IETF RFC 793 -  Transmission Control Protocol, - -
IETF RFC 796 -  Address mappings - -
IETF RFC 826 -  Ethernet Address Resolution Protocol: Or - -
Converting Network Protocol Addresses to
48.bit Ethernet Address for Transmission
on Ethernet Hardware
IETF RFC 894 -  Standard for the Transmission of IP - -
Datagrams over Ethernet Networks
IETF RFC 919 -  Broadcasting Internet Datagrams - -
IETF RFC 922 -  Broadcasting Internet datagrams in the - -
presence of subnets
IETF RFC 950 -  Internet Standard Subnetting Procedure - -

IEC 61158-5-26 ®
Edition 1.0 2019-04
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –

Part 5-26: Application layer service definition – Type 26 elements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.70; 35.110 ISBN 978-2-8322-6768-4

– 2 – IEC 61158-5-26:2019 © IEC 2019
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
1.1 Overview . 8
1.2 Specifications . 9
1.3 Conformance . 9
2 Normative references . 9
3 Terms, definitions, symbols, abbreviations and conventions . 10
3.1 Terms and definitions from other ISO/IEC standards . 11
3.1.1 Terms and definitions from ISO/IEC 7498-1 . 11
3.1.2 Terms and definitions from ISO/IEC 8822 . 11
3.1.3 Terms and definitions from ISO/IEC 9545 . 11
3.1.4 Terms and definitions from ISO/IEC 8824-1 . 11
3.2 Fieldbus application layer Type 26-specific definitions . 12
3.3 Abbreviations and symbols . 18
3.4 Conventions . 20
3.4.1 Overview . 20
3.4.2 General conventions . 20
3.4.3 Conventions for class definitions . 20
3.4.4 Conventions for service definitions . 21
4 Concepts . 22
5 Data type ASE . 23
5.1 Overview . 23
5.2 Formal definition of data type objects . 23
5.2.1 Data type class definitions . 23
5.2.2 Attributes . 24
5.3 FAL defined data types . 25
5.3.1 Fixed length types . 25
5.3.2 String types . 29
5.4 Data type ASE service specification . 30
6 Communication model specification . 30
6.1 General . 30
6.2 Protocol stack for Type 26 fieldbus . 30
6.3 Overview of Type 26 communication model . 31
6.4 Cyclic data communication service with Common-memory . 32
6.4.1 Overview . 32
6.4.2 Common–memory: allocation to each node . 32
6.4.3 Data sharing among nodes with the CM . 33
6.4.4 CM data type . 35
6.5 ASEs . 35
6.5.1 Overview of Type 26 ASEs . 35
6.5.2 Type 26 specific conventions for FAL service common parameters . 36
6.5.3 Cyclic-data ASE. 37
6.5.4 Message data ASE . 42
6.5.5 Communication load measurement ASE . 69
6.5.6 Network management ASE . 74

IEC 61158-5-26:2019 © IEC 2019 – 3 –
6.5.7 General purpose command server ASE . 87
6.5.8 AR ASE . 90
6.5.9 FAL ASE summary . 101
Bibliography . 104

Figure 1 – Protocol stack for Type 26 fieldbus . 31
Figure 2 – Unconfirmed Push-Publisher/Subscriber type interaction . 32
Figure 3 – Unconfirmed/Con
...