EN IEC 61784-2-21:2023

Industrial networks - Profiles - Part 2-21: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 - CPF 21

IEC 61784-2 (all parts) defines additional Communication Profiles (CPs) for the existing Communication Profile Families (CPFs) of IEC 61784-1 (all parts) and additional CPFs with one or more CPs. These additional CPs are based on the IEC 61158 series, IEC 61784-1 (all parts) and use provisions from ISO/IEC/IEEE 8802-3 (commonly known as Ethernet) for the lower communication stack layers. These Real-Time Ethernet (RTE) communication profiles provide Real-Time Ethernet communication solutions able to coexist with ISO/IEC/IEEE 8802-3 based applications. NOTE 1 All CPs are based on standards or draft standards or International Standards published by the IEC or from standards or International Standards established by other standards bodies or open standards processes. NOTE 2 The RTE communication profiles use ISO/IEC/IEEE 8802-3 communication networks and its related network components or IEC 61588 and may in some cases amend those standards to obtain RTE features. This document defines: - a common terminology for all CPFs in IEC 61784-2 (all parts) (see 3.1 to 3.3); - conventions to be used in the specification of the RTE communication profiles (see 3.4); - how conformance of a device to a CPF or a CP should be stated (see Clause 4). This document also specifies: - basic principles of performance indicators expressing RTE performance of a CP (see 5.1); - how an application-dependent class could be used to find out a suitable CP to meet application requirements (see 5.2); - characteristics of RTE performance indicators (see 5.3); - the methodology of a conformance test for an RTE end device for one or more CPs (see Clause 6).

Industrielle Kommunikationsnetze - Profile - Teil 2-21: Zusätzliche Feldbusprofile für Echtzeitnetzwerke basierend auf ISO/IEC/IEEE 8802-3 - Kommunikationsprofilfamilie (CPF) 21

Réseaux industriels - Profils - Partie 2-21: Profils de bus de terrain supplémentaires pour les réseaux en temps réel fondés sur l'ISO/IEC/IEEE 8802-3 - CPF 21

L'IEC 61784-2-21:2023 définit la famille de profils de communication 21 (CPF 21). La CPF 21 spécifie un profil de communication (CP) Ethernet en temps réel (RTE) et les composants de réseau connexes basés sur la série IEC 61158 (Type 26), l’ISO/IEC/IEEE 8802‑3 et d’autres normes. Pour chaque profil de communication RTE, le présent document spécifie également les indicateurs de performance RTE correspondants et les dépendances entre ces indicateurs de performance RTE. NOTE 1 Tous les CP sont fondés sur des normes ou projets de normes, ou des Normes internationales, publiés par l’IEC, ou bien sur des normes ou des Normes internationales établies par d’autres organismes de normalisation ou des processus de normalisation ouverts. NOTE 2 Le profil de communication RTE utilise les réseaux de communication ISO/IEC/IEEE 8802‑3 et leurs composants de réseau connexes et amende dans certains cas ces normes, pour obtenir les fonctions RTE.

Industrijska omrežja - Profili - 2-21. del: Dodatni profili procesnih vodil v realnem času po ISO/IEC/IEEE 8802-3 - CPF 21 (IEC 61784-2-21:2023)

Standard IEC 61784-2 (vsi deli) določa dodatne komunikacijske profile (CP) za obstoječe družine komunikacijskih profilov (CPF) iz standarda IEC 61784-1 (vsi deli) in dodatne družine komunikacijskih profilov z vsaj enim komunikacijskim profilom. Ti dodatni komunikacijski profili temeljijo na skupini standardov IEC 61158 in standardu IEC 61784-1 (vsi deli) ter uporabljajo določbe iz standarda ISO/IEC/IEEE 8802-3 (splošno znan kot ethernet) za nižje komunikacijske ravni. Ti komunikacijski profili Real-Time Ethernet (RTE) zagotavljajo soobstoj komunikacijskih rešitev Real-Time Ethernet in aplikacij na osnovi standarda ISO/IEC/IEEE 8802-3.
OPOMBA 1: Vsi komunikacijski profili temeljijo na standardih ali osnutkih standardov ali mednarodnih standardih, ki jih je objavila komisija IEC, oziroma na standardih ali mednarodnih standardih, ki so jih določili drugi organi za standarde ali procesi odprtih standardov.
OPOMBA 2: Komunikacijski profili RTE uporabljajo komunikacijska omrežja v skladu s standardom ISO/IEC 8802-3 maj in z njimi povezane omrežne komponente ali IEC 61588 ter lahko v nekaterih primerih za pridobitev funkcij RTE te standarde spremenijo.
Ta dokument določa:
– skupno terminologijo za vse družine komunikacijskih profilov v standardu IEC 61784-2 (vsi deli) (glej točke od 3.1 do 3.3);
– dogovore, ki jih je treba uporabiti v specifikaciji komunikacijskih profilov RTE (glej 3.4);
– kako naj se navede skladnost naprave z družino komunikacijskih profilov ali komunikacijskim profilom (glej točko 4).
Ta dokument določa tudi:
– osnovna načela kazalnikov uspešnosti, ki izražajo uspešnost RTE komunikacijskega profila (glej 5.1);
– kako bi se lahko razred, ki je odvisen od aplikacije, uporabil za iskanje ustreznega komunikacijskega profila za izpolnitev zahtev aplikacije (glej 5.2);
– značilnosti kazalnikov uspešnosti RTE (glej 5.3);
– metodologijo preskusa skladnosti za končno napravo RTE za enega ali več komunikacijskih profilov (glej točko 6).

General Information

• Status: Published
• Publication Date: 22-Jun-2023
• ICS: 35.100.20 - Data link layer
• ICS: 35.240.50 - IT applications in industry
• Technical Committee: CLC/TC 65X - Industrial-process measurement, control and automation
• Drafting Committee: IEC/SC 65C - IEC_SC_65C
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 23-Jun-2023
• Completion Date: 23-Jun-2023
• Ref Project: SIST EN IEC 61784-2-21:2023 - Industrial networks - Profiles - Part 2-21: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 - CPF 21 (IEC 61784-2-21:2023)

Relations

• Splited From: EN IEC 61784-2:2019 - Industrial communication networks - Profiles - Part 2: Additional fieldbus profiles for real-time networks based on ISO/IEC/IEEE 8802-3
• Effective Date: 06-Jun-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2023
Industrijska omrežja - Profili - 2-21. del: Dodatni profili procesnih vodil v realnem
času po ISO/IEC/IEEE 8802-3 - CPF 21 (IEC 61784-2-21:2023)
Industrial networks - Profiles - Part 2-21: Additional real-time fieldbus profiles based on
ISO/IEC/IEEE 8802-3 - CPF 21 (IEC 61784-2-21:2023)
Industrielle Kommunikationsnetze - Profile - Teil 2-21: Zusätzliche Feldbusprofile für
Echtzeitnetzwerke basierend auf ISO/IEC/IEEE 8802-3 - Kommunikationsprofilfamilie
(CPF) 21 (IEC 61784-2-21:2023)
Réseaux industriels - Profils - Partie 2-21: Profils de bus de terrain supplémentaires pour
les réseaux en temps réel fondés sur l'ISO/IEC/IEEE 8802-3 - CPF 21 (IEC 61784-2-
21:2023)
Ta slovenski standard je istoveten z: EN IEC 61784-2-21:2023
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.05 Večslojne uporabniške Multilayer applications
rešitve
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61784-2-21

NORME EUROPÉENNE
EUROPÄISCHE NORM June 2023
ICS 35.240.50; 35.100.20 Supersedes EN IEC 61784-2:2019 (partially)
English Version
Industrial networks - Profiles - Part 2-21: Additional real-time
fieldbus profiles based on ISO/IEC/IEEE 8802-3 - CPF 21
(IEC 61784-2-21:2023)
Réseaux industriels - Profils - Partie 2-21: Profils de bus de Industrielle Kommunikationsnetze - Profile - Teil 2-21:
terrain supplémentaires pour les réseaux en temps réel Zusätzliche Feldbusprofile für Echtzeitnetzwerke basierend
fondés sur l'ISO/IEC/IEEE 8802-3 - CPF 21 auf ISO/IEC/IEEE 8802-3 - Kommunikationsprofilfamilie
(IEC 61784-2-21:2023) (CPF) 21
(IEC 61784-2-21:2023)
This European Standard was approved by CENELEC on 2023-06-09. 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 61784-2-21:2023 E

European foreword
The text of document 65C/1209/FDIS, future edition 1 of IEC 61784-2-21, 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) 2024-03-09
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-06-09
document have to be withdrawn
This document partially supersedes EN IEC 61784-2:2019 and all of its amendments and corrigenda
(if any).
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 61784-2-21:2023 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 61158-1 NOTE Approved as EN IEC 61158-1
IEC 61158-2 NOTE Approved as EN IEC 61158-2
IEC 61784-1 (series) NOTE Approved as EN IEC 61784-1 (series)
IEC 61784-1-0 NOTE Approved as EN IEC 61784-1-0
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 series Industrial communication networks - Fieldbus EN IEC 61158 series
specifications
IEC 61158-5-26 2023 Industrial communication networks - Fieldbus EN IEC 61158-5-26 2023
specifications - Part 5-26: Application layer
service definition - Type 26 elements
IEC 61158-6-26 2023 Industrial communication networks - Fieldbus EN IEC 61158-6-26 2023
specifications - Part 6-26: Application layer
protocol specification - Type 26 elements
IEC 61784-2-0 2023 Industrial networks - Profiles - Part 2-0: EN IEC 61784-2-0 2023
Additional real-time fieldbus profiles based on
ISO/IEC/IEEE 8802-3 - General concepts
and terminology
IEC 61784-5-21 2018 Industrial communication networks - Profiles - EN IEC 61784-5-21 2018
Part 5-21: Installation of fieldbuses -
Installation profiles for CPF 21
IEC 61918 - Industrial communication networks - EN IEC 61918 -
Installation of communication networks in
industrial premises
ISO/IEC/IEEE - Telecommunications and exchange between - -
8802-3 information technology systems -
Requirements for local and metropolitan area
networks - Part 3: Standard for Ethernet
IEEE Std 802 2014 IEEE Standard for Local and Metropolitan - -
Area Networks: Overview and Architecture
IEEE Std 802.1AB 2016 IEEE Standard for Local and metropolitan - -
area networks: Station and Media Access
Control Connectivity Discovery
IEEE Std 802.1AS 2020 IEEE Standard for Local and Metropolitan - -
Area Networks - Timing and Synchronization
for Time-Sensitive Applications
Publication Year Title EN/HD Year
IEEE Std 802.1Q 2018 IEEE Standard for Local and Metropolitan - -
Area Networks - Bridges and Bridged
Networks
IETF RFC 768 1980 User Datagram Protocol - -
IETF RFC 791 1981 Internet Protocol - -
IETF RFC 792 1981 Internet Control Message Protocol - -
IETF RFC 793 1981 Transmission Control Protocol - -
IETF RFC 796 2081 Address mappings - -
IETF RFC 826 1982 Ethernet Address Resolution Protocol: Or - -
Converting Network Protocol Addresses to
48.bit Ethernet Address for Transmission on
Ethernet Hardware
IETF RFC 894 1984 Standard for the Transmission of IP - -
Datagrams over Ethernet Networks
IETF RFC 919 1984 Broadcasting Internet Datagrams - -
IETF RFC 922 1984 Broadcasting Internet Datagrams - -
IETF RFC 950 1985 Internet Standard Subnetting Procedure - -

IEC 61784-2-21 ®
Edition 1.0 2023-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial networks – Profiles –

Part 2-21: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 –

CPF 21
Réseaux industriels – Profils –

Partie 2-21: Profils de bus de terrain supplémentaires pour les réseaux en

temps réel fondés sur l’ISO/IEC/IEEE 8802-3 – CPF 21

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 35.100.20; 35.240.50 ISBN 978-2-8322-6914-5

– 2 – IEC 61784-2-21:2023 © IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, abbreviated terms, acronyms, and conventions . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms and acronyms . 8
3.3 Symbols . 8
3.4 Conventions . 9
4 CPF 21 (FL-net) – RTE communication profiles . 10
4.1 General overview . 10
4.2 CP 21/1 . 10
4.2.1 Physical layer . 10
4.2.2 Data-link layer . 10
4.2.3 Application layer . 13
4.2.4 Performance indicator selection . 17
Bibliography . 25

Figure 1 – Protocol stack for Type 26 fieldbus . 11

Table 1 – CPF 21 symbols . 9
Table 2 – CPF 21: Overview of profile sets . 10
Table 3 – DL-layer protocol / service suite selection . 12
Table 4 – Data transmission service selection . 12
Table 5 – Port number selection . 13
Table 6 – IP address selection . 13
Table 7 – CP 21/1: AL service selection . 14
Table 8 – Service selection of Subclause 6.5.4 and 6.5.6 . 15
Table 9 – CP 21/1: AL protocol selection . 16
Table 10 – Protocol selection of Subclause 5.2 . 17
Table 11 – CP 21/1: Performance indicator overview . 18
Table 12 – CP 21/1: Performance indicator dependency matrix . 18
Table 13 – CP 21/1: Consistent set of PIs for CM1 and CM2 (Erate = 100 Mbit/s) . 24
Table 14 – CP 21/1: Consistent set of PIs for CM1, CM2 and CM3 (Erate = 100 Mbit/s) . 24
Table 15 – CP 21/1: Consistent set of PIs for CM1, CM2 and CM3
(Erate = 1 000 Mbit/s) . 24

IEC 61784-2-21:2023 © IEC 2023 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL NETWORKS –
PROFILES –
Part 2-21: Additional real-time fieldbus profiles
based on ISO/IEC/IEEE 8802-3 –
CPF 21
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory wor
...