Industrial communication networks - Fieldbus specifications - Part 6-28: Application layer protocol specification - Type 28 elements

IEC 61158-6-28:2023 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 28 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 can cause failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life.

Industrielle Kommunikationsnetze - Feldbusse - Teil 6-28: Protokollspezifikation des Application Layer (Anwendungsschicht) - Typ 28-Elemente

Réseaux de communication industriels - Spécifications des bus de terrain - Partie 6-28: Spécification du protocole de la couche application - Éléments de type 28

L’IEC 61158-6-28:2023 donne les éléments communs visant à assurer les communications de messagerie de base prioritaires et non prioritaires entre les programmes d’application d’un environnement d’automatisation et d’un matériel spécifique au bus de terrain de type 28. Le terme "prioritaire" est utilisé pour indiquer la présence d’une fenêtre temporelle, dans laquelle il est exigé de réaliser une ou plusieurs actions spécifiées selon un niveau défini de certitude. La non-réalisation des actions spécifiées dans la fenêtre temporelle peut provoquer la défaillance des applications qui les demandent, avec les risques associés pour l’équipement, l’usine, voire les personnes.

Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 6-28. del: Specifikacija protokola na aplikacijski ravni - Elementi tipa 28 (IEC 61158-6-28:2023)

Aplikacijska raven procesnih vodil (FAL) uporabniškim programom omogoča dostop do komunikacijskega okolja procesnih vodil. Glede na to je mogoče aplikacijsko raven procesnih vodil šteti za »okno med ustreznimi aplikacijami«.
Ta del standarda IEC 61158 določa skupne elemente za osnovne časovno kritične in časovno nekritične sporočilne komunikacije med aplikacijami v avtomatizacijskem okolju ter material, specifičen za procesna vodila tipa 28. Izraz »časovno kritičen« se uporablja za predstavitev prisotnosti časovnega okna, v okviru katerega se zahteva dokončanje enega ali več opredeljenih dejanj z določeno stopnjo gotovosti. Zaradi neuspešnega dokončanja opredeljenih dejanj v časovnem oknu lahko pride do odpovedi aplikacij, ki zahtevajo dejanja, pri čemer so ogroženi oprema, obrat in morda človeška življenja.
Ta dokument na abstrakten način določa na zunaj vidno vedenje, ki ga zagotavlja aplikacijska raven procesnih vodil tipa 28 v smislu:
– abstraktne sintakse, ki določa podatkovne enote protokola aplikacijske ravni, ki se prenašajo med aplikacijskimi osebki, ki komunicirajo;
– prenosne sintakse, ki določa podatkovne enote protokola aplikacijske ravni, ki se prenašajo med aplikacijskimi osebki, ki komunicirajo;
– stroja stanja aplikacijskega konteksta, ki opredeljuje vedenje aplikacijskega opravila, vidnega med aplikacijskimi osebki, ki komunicirajo; in
– strojev stanja aplikacijskega razmerja, ki opredeljujejo komunikacijsko vedenje med aplikacijskimi osebki, ki komunicirajo.
Namen tega dokumenta je opredeliti protokol, ki se zagotavlja za:
– žično predstavitev primitivov opravil iz standarda IEC 61158-5-28, in
– na zunaj vidno vedenje, povezano z njihovim prenosom.
Ta dokument določa protokol aplikacijske ravni procesnih vodil IEC tipa 28 v skladu z osnovnim referenčnim modelom OSI (ISO/IEC 7498) in strukturo aplikacijske ravni OSI (ISO/IEC 9545).

General Information

Status
Published
Publication Date
04-May-2023
Current Stage
6060 - Document made available - Publishing
Start Date
05-May-2023
Due Date
27-Jan-2023
Completion Date
05-May-2023

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SLOVENSKI STANDARD
01-november-2023
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 6-28. del:
Specifikacija protokola na aplikacijski ravni - Elementi tipa 28 (IEC 61158-6-
28:2023)
Industrial communication networks - Fieldbus specifications - Part 6-28: Application layer
protocol specification - Type 28 elements (IEC 61158-6-28:2023)
Industrielle Kommunikationsnetze - Feldbusse - Teil 6-28: Protokollspezifikation des
Application Layer (Anwendungsschicht) - Typ 28-Elemente (IEC 61158-6-28:2023)
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 6-28:
Spécification du protocole de la couche application - Éléments de type 28 (IEC 61158-6-
28:2023)
Ta slovenski standard je istoveten z: EN IEC 61158-6-28:2023
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 61158-6-28

NORME EUROPÉENNE
EUROPÄISCHE NORM May 2023
ICS 25.040
English Version
Industrial communication networks - Fieldbus specifications -
Part 6-28: Application layer protocol specification - Type 28
elements
(IEC 61158-6-28:2023)
Réseaux de communication industriels - Spécifications des Industrielle Kommunikationsnetze - Feldbusse - Teil 6-28:
bus de terrain - Partie 6-28: Spécification du protocole de la Protokollspezifikation des Application Layer
couche application - Éléments de type 28 (Anwendungsschicht) - Typ 28-Elemente
(IEC 61158-6-28:2023) (IEC 61158-6-28:2023)
This European Standard was approved by CENELEC on 2023-04-28. 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,
Türkiye 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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61158-6-28:2023 E

European foreword
The text of document 65C/1206/FDIS, future edition 1 of IEC 61158-6-28, 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) 2024-01-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-04-28
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61158-6-28:2023 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 61158-2 NOTE Approved as EN 61158-2
IEC 61158-3-28 NOTE Approved as EN IEC 61158-3-28
IEC 61158-4-28 NOTE Approved as EN IEC 61158-4-28
IEC 61158-5 (series) NOTE Approved as EN 61158-5 (series)
IEC 61158-6 (series) NOTE Approved as EN 61158-6 (series)
IEC 61784-1 (series) NOTE Approved as EN IEC 61784-1 (series)
IEC 61784-2 (series) NOTE Approved as EN IEC 61784-2 (series)
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.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 61158-1 2023 Industrial communication networks - Fieldbus - -
specifications - Part 1: Overview and guidance
for the IEC 61158 and IEC 61784 series
IEC 61158-5-28 2023 Industrial communication networks - Fieldbus - -
specifications - Part 5-28: Application layer
service definition - Type 28 elements
ISO/IEC 7498-1 - Information technology - Open Systems - -
Interconnection - Basic reference model: The
basic model
ISO/IEC 7498-3 - Information technology - Open Systems - -
Interconnection - Basic reference model:
Naming and addressing
ISO/IEC 8824-1 - Information technology - Abstract Syntax - -
Notation One (ASN.1) - Part 1: Specification of
basic notation
ISO/IEC 8825-7 2021 nformation technology - ASN.1 encoding rules - - -
Part 7: Specification of Octet Encoding Rules
(OER)
ISO/IEC 9545 - Information technology - Open Systems - -
Interconnection - Application layer structure
ISO/IEC/IEEE 8802-3 2021 Telecommunications and exchange between - -
information technology systems - Requirements
for local and metropolitan area networks -
Part 3: Standard for Ethernet
IETF RFC 791 - Internet Protocol - DARPA Internet Program - -
Protocol Specification
IETF RFC 2460 - Internet Protocol - Version 6 (IPv6) - - -
Specification
IEC 61158-6-28 ®
Edition 1.0 2023-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial communication networks – Fieldbus specifications –
Part 6-28: Application layer protocol specification – Type 28 elements
Réseaux de communication industriels – Spécifications des bus de terrain –
Partie 6-28: Spécification du protocole de la couche application – Éléments de
type 28
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040 ISBN 978-2-8322-6621-2
– 2 – IEC 61158-6-28:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
1.1 Overview. 7
1.2 Specifications . 7
1.3 Conformance . 8
2 Normative references . 8
3 Terms, definitions, symbols, abbreviated terms and conventions . 9
3.1 Terms and definitions from other ISO/IEC standards . 9
3.1.1 Terms and definitions from ISO/IEC 7498-1 . 9
3.1.2 Terms and definitions from ISO/IEC 9545 . 9
3.1.3 Terms and definitions from ISO/IEC 8824-1 . 9
3.1.4 Terms and definitions from ISO/IEC 8825-7 . 9
3.1.5 Terms and definitions from IEC 61158-5 . 10
3.2 Type 28 fieldbus application-layer specific definitions . 10
3.3 Abbreviations and symbols . 10
3.4 Conventions . 11
3.4.1 General concept . 11
3.4.2 Conventions for class definitions . 11
3.4.3 Abstract syntax conventions . 11
3.5 Conventions used in state machines . 11
3.5.1 State machine conventions for Type 28 . 11
4 APDU structure . 12
4.1 APDU header . 12
4.2 DTU APDU . 14
4.3 Time service notification APDU . 15
4.4 System management APDU . 16
5 State machine . 17
5.1 Publisher state machine . 17
5.2 Subscriber state machine . 19
5.3 Client state machine . 20
5.4 Server state machine . 21
5.5 ALCE state machine . 22
5.6 ALDE state machine . 22
5.7 ALME state machine . 23
Bibliography . 25

Figure 1 – APDU header structure . 12
Figure 2 – APDU structure of multiple DTUs . 14
Figure 3 – Transmission unit APDU structure . 14
Figure 4 – Time service notification APDU structure . 15
Figure 5 – System management data APDU structure . 17
Figure 6 – Diagram of state transition of publisher state machine . 18
Figure 7 – Diagram of state transition of subscriber state machine . 20
Figure 8 – Diagram of state transition of client state machine . 21

IEC 61158-6-28:2023 © IEC 2023 – 3 –
Figure 9 – Diagram of transition state of server state machine . 21
Figure 10 – Diagram of transition state of ALCE state machine . 22
Figure 11 – Diagram of transition state of ALDE state machine . 23
Figure 12 – Diagram of state transition for ALME state machine . 24

Table 1 – State machine description elements . 11
Table 2 – AL service type flag encoding . 12
Table 3 – State transition table of publisher state machine . 18
Table 4 – State transition table of subscriber state machine . 19
Table 5 – State transition table of client state machine . 20
Table 6 – State transition table of serve
...

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