EN IEC 61784-2-14:2023
(Main)Industrial networks - Profiles - Part 2-14: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 - CPF 14
Industrial networks - Profiles - Part 2-14: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 - CPF 14
IEC 61784-2-14:2023 defines Communication Profile Family 14 (CPF 14). CPF 14 specifies a set of Real-Time Ethernet (RTE) communication profiles (CPs) and related network components based on the IEC 61158 series (Type 14), ISO/IEC/IEEE 8802-3 and other standards. For each RTE communication profile, this document also specifies the relevant RTE performance indicators and the dependencies between these RTE performance indicators. NOTE 1 All CPs are based on standards or draft standards or International Standards published by the IEC or on 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 in some cases amend those standards to obtain RTE features.
Industrielle Kommunikationsnetze - Profile - Teil 2-14: Zusätzliche Feldbusprofile für Echtzeitnetzwerke basierend auf ISO/IEC/IEEE 8802-3 - Kommunikationsprofilfamilie (CPF) 14
Réseaux industriels Profils Partie 2-14: Profils de bus de terrain supplémentaires pour les réseaux en temps réel fondés sur lISO/IEC/IEEE 8802-3 CPF 14
L’IEC 61784-2-14:2023 définit la famille de profils de communication 14 (CPF 14). La CPF 14 spécifie un ensemble de profils de communication (CP) Ethernet en temps réel (RTE, Real-Time Ethernet) et de composants de réseau associés basés sur la série IEC 61158 (type 14), 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 Les profils de communication RTE utilisent les réseaux de communication ISO/IEC/IEEE 8802-3 et leurs composants de réseau connexes, ou l’IEC 61588, et amendent dans certains cas ces normes, pour obtenir les fonctions RTE.
Industrijska omrežja - Profili - 2-14. del: Dodatni profili procesnih vodil v realnem času po ISO/IEC/IEEE 8802-3 - CPF 14 (IEC 61784-2-14:2023)
Standard IEC 61784-2-14:2023 določa družino komunikacijskih profilov 14 (CPF 14). Družina komunikacijskih profilov 14 določa sklop komunikacijskih profilov (CP) Real-Time Ethernet (RTE) in povezanih omrežnih komponent na osnovi skupine standardov IEC 61158 (tip 14), standarda ISO/IEC/IEEE 8802-3 in drugih standardov.
Za vsak komunikacijski profil RTE ta dokument določa tudi povezane kazalnike uspešnosti RTE in odvisnosti med temi kazalniki uspešnosti RTE.
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 in z njimi povezane omrežne komponente ali IEC 61588 ter v nekaterih primerih za pridobitev funkcij RTE te standarde spremenijo.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2023
Industrijska omrežja - Profili - 2-14. del: Dodatni profili procesnih vodil v realnem
času po ISO/IEC/IEEE 8802-3 - CPF 14 (IEC 61784-2-14:2023)
Industrial networks - Profiles - Part 2-14: Additional real-time fieldbus profiles based on
ISO/IEC/IEEE 8802-3 - CPF 14 (IEC 61784-2-14:2023)
Industrielle Kommunikationsnetze - Profile - Teil 2-14: Zusätzliche Feldbusprofile für
Echtzeitnetzwerke basierend auf ISO/IEC/IEEE 8802-3 - Kommunikationsprofilfamilie
(CPF) 14 (IEC 61784-2-14:2023)
Réseaux industriels - Profils - Partie 2-14: Profils de bus de terrain supplémentaires pour
les réseaux en temps réel fondés sur l'ISO/IEC/IEEE 8802-3 - CPF 14 (IEC 61784-2-
14:2023)
Ta slovenski standard je istoveten z: EN IEC 61784-2-14:2023
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 61784-2-14
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2023
ICS 35.100.20; 35.240.50 Supersedes EN IEC 61784-2:2019 (partially)
English Version
Industrial networks - Profiles - Part 2-14: Additional real-time
fieldbus profiles based on ISO/IEC/IEEE 8802-3 - CPF 14
(IEC 61784-2-14:2023)
Réseaux industriels - Profils - Partie 2-14: Profils de bus de Industrielle Kommunikationsnetze - Profile - Teil 2-14:
terrain supplémentaires pour les réseaux en temps réel Zusätzliche Feldbusprofile für Echtzeitnetzwerke basierend
fondés sur l'ISO/IEC/IEEE 8802-3 - CPF 14 auf ISO/IEC/IEEE 8802-3 - Kommunikationsprofilfamilie
(IEC 61784-2-14:2023) (CPF) 14
(IEC 61784-2-14:2023)
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 61784-2-14:2023 E
European foreword
The text of document 65C/1209/FDIS, future edition 1 of IEC 61784-2-14, 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 61784-2-14:2023 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)
IEC 61918 NOTE Approved as EN IEC 61918
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 61158-3-14 2014 Industrial communication networks - Fieldbus EN 61158-3-14 2014
specifications - Part 3-14: Data-link layer
service definition - Type 14 elements
IEC 61158-4-14 2014 Industrial communication networks - Fieldbus EN 61158-4-14 2014
specifications - Part 4-14: Data-link layer
protocol specificationn - Type 14 elements
IEC 61158-5-14 2014 Industrial communication networks - Fieldbus EN 61158-5-14 2014
specifications - Part 5-14: Application layer
service definition - Type 14 elements
IEC 61158-6-14 2014 Industrial communication networks - Fieldbus EN 61158-6-14 2014
specifications - Part 6-14: Application layer
protocol specification - Type 14 elements
IEC 61588 - Precision Clock Synchronization Protocol for - -
Networked Measurement and Control
Systems
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
ISO/IEC/IEEE - Telecommunications and exchange between - -
8802-3 information technology systems -
Requirements for local and metropolitan area
networks - Part 3: Standard for Ethernet
ISO/IEC/IEEE - Information technology - Telecommunications - -
8802-11 and information exchange between systems -
Local and metropolitan area networks -
Specific requirements - Part 11: Wireless
LAN medium access control (MAC) and
physical layer (PHY) specifications
IEEE Std 802 2014 IEEE Standard for Local and Metropolitan - -
Area Networks: Overview and Architecture
Publication Year Title EN/HD Year
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
IEEE Std 802.1Q 2018 IEEE Standard for Local and Metropolitan - -
Area Networks - Bridges and Bridged
Networks
IEEE Std 802.15.1 2005 IEEE Standard for Information technology - - -
Telecommunications and information
exchange between systems - Local and
metropolitan area networks - Specific
requirements. - Part 15.1: Wireless medium
access control (MAC) and physical layer
(PHY) specifications for wireless personal
area networks (WPANs)
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 826 - Ethernet Address Resolution Protocol: Or - -
Converting Network Protocol Addresses to
48.bit Ethernet Address for Transmission on
Ethernet Hardware
IEC 61784-2-14 ®
Edition 1.0 2023-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial networks – Profiles –
Part 2-14: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 –
CPF 14
Réseaux industriels – Profils –
Partie 2-14: Profils de bus de terrain supplémentaires pour les réseaux en
temps réel fondés sur l’ISO/IEC/IEEE 8802-3 – CPF 14
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 35.100.20; 35.240.50 ISBN 978-2-8322-6903-9
– 2 – IEC 61784-2-14:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, abbreviated terms, acronyms, and conventions . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms and acronyms . 9
3.3 Symbols . 9
3.4 Conventions . 10
4 CPF 14 (EPA) – RTE communication profiles . 11
4.1 General overview . 11
4.2 CPF 14 (EPA) communication concept . 11
4.2.1 General . 11
4.2.2 Network Topology . 11
4.2.3 EPA devices . 12
4.3 CP 14/1 . 13
4.3.1 Physical layer . 13
4.3.2 Data-link layer . 13
4.3.3 Network Layer . 13
4.3.4 Transport Layer . 13
4.3.5 Application layer . 13
4.3.6 Performance indicator selection . 14
4.4 CP 14/2 . 18
4.4.1 Physical layer . 18
4.4.2 Data-link layer . 18
4.4.3 Network Layer . 19
4.4.4 Transport Layer . 19
4.4.5 Application layer . 19
4.4.6 Performance indicator selection . 20
4.5 CP 14/3 . 23
4.5.1 Physical layer . 23
4.5.2 Data-link layer . 23
4.5.3 Network Layer . 24
4.5.4 Transport Layer . 24
4.5.5 Application layer . 24
4.5.6 Performance indicator selection . 25
4.6 CP 14/4 . 29
4.6.1 Physical layer . 29
4.6.2 Data-link layer . 29
4.6.3 Network layer . 30
4.6.4 Transport layer . 31
4.6.5 Application layer . 31
4.6.6 Performance indicator selection . 32
Bibliography . 35
Figure 1 – EPA system network topology example . 12
IEC 61784-2-14:2023 © IEC 2023 – 3 –
Table 1 – CPF 14 symbols . 10
Table 2 – CP 14/1: AL service selection . 14
Table 3 – CP 14/1: AL protocol selection . 14
Table 4 – CP 14/1: PI overview . 15
Table 5 – CP 14/1: PI dependency matrix . 15
Table 6 – CP 14/1: Consistent set of PIs . 17
Table 7 – CP 14/2: DLL service selection . 18
Table 8 – CP 14/2: DLL protocol selection . 18
Table 9 – CP 14/2: AL service selection . 19
Table 10 – CP 14/2: AL protocol selection . 20
Table 11 – CP 14/2: PI overview . 20
Table 12 – CP 14/2: PI dependency matrix . 21
Table 13 – CP 14/2: Consistent set of PIs . 23
Table 14 – CP 14/3: DLL service selection . 23
Table 15 – CP 14/3: DLL protocol selection . 24
Table 16 – CP 14/3: AL service selection . 24
Table 17 – CP 14/3: AL protocol selection . 25
Table 18 – CP 14/3: PI overview . 25
Table 19 – CP 14/3: PI dependency matrix . 26
Table 20 – CP 14/3: Consistent set of PIs . 28
Table 21 – CP 14/3: Consistent set of PIs . 29
Table 22 – CP 14/3: Consistent set of PIs . 29
Table 23 – CP 14/4: DLL service selection . 30
Table 24 – CP 14/4: DLL protocol selection . 30
Table 25 – CP 14/4: AL service selection . 31
Table 26 – CP 14/4: AL protocol selection . 31
Table 27 – CP 14/4: PI overview . 32
Table 28 – CP 14/4: PI dependency matrix . 32
Table 29 – CP 14/4: Consistent set of PIs . 34
– 4 – IEC 61784-2-14:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL NETWORKS –
PROFILES –
Part 2-14: Additional real-time fieldbus profiles
based on ISO/IEC/IEEE 8802-3 –
CPF 14
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 work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
Attention is drawn to the fact that the use of some of the associated protocol types is restricted
by their intellectual-property-right holders. In all cases, the commitment to limited release of
intellectual-property-rights made by the holders of those rights permits a layer protocol type to
be used with other layer protocols of the same type, or in other type combinations explicitly
authorized by their respective intellectual property right holders.
NOTE Combinations of protocol types are specified in the IEC 61784-1 series and the IEC 61784-2 series.
IEC 61784-2-14 has been prepared by subcommittee 65C: Industrial networks, of IEC technical
committee 65: Industrial-process measurement, control and automation. It is an International
Standard.
This first edition, together with the other parts of the same series, cancels and replaces the
fourth edition of IEC 61784-2 published in 2019. This first edition constitutes a technical revision.
IEC 61784-2-14:2023 © IEC 2023 – 5 –
This edition includes the following significant technical changes with respect to
IEC 61784-2:2019:
a) split of the original IEC 61784-2 into several subparts, one subpart for the material of a
generic nature, and one subpart for each Communication Profile Family specified in the
original document.
The text of this International Standard is based on the following documents:
Draft Report on voting
65C/1209/FDIS 65C/1237/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts of the IEC 61784-2 series, published under the general title
Industrial networks – Profiles – Part 2: Additional real-time fieldbus profiles based on
ISO/IEC/IEEE 8802-3, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
– 6 – IEC 61784-2-14:2023 © IEC 2023
INTRODUCTION
The IEC 61784-2 series provides additional Communication Profiles (CP) to the existing
Communication Profile Families (CPF) of the IEC 61784-1 series and additional CPFs with one
or more CPs. These profiles meet the industrial automation market objective of identifying Real-
Time Ethernet (RTE) communication networks coexisting with ISO/IEC/IEEE 8802-3 –
commonly known as Ethernet. These RTE communication networks use provisions of
ISO/IEC/IEEE 8802-3 for the lower communication stack layers and additionally provide more
predictable and reliable real-time data transfer and means for support of precise
synchronization of automation equipment.
More specifically, these profiles help to correctly state the compliance of RTE communication
networks with ISO/IEC/IEEE 8802-3, and to avoid the spreading of divergent implementations.
Adoption of Ethernet technology for industrial communication between controllers and even for
communication with field devices promotes the use of Internet technologies in the field area.
This availability would be unacceptable if it causes the loss of features required in the field area
for industrial communication automation networks, such as:
• real-time,
• synchronized actions between field devices like drives,
• efficient, frequent exchange of very small data records.
These new RTE profiles can take advantage of the improvements of Ethernet networks in terms
of transmission bandwidth and network span.
Another implicit but essential requirement is that the typical Ethernet communication
capabilities, as used in the office world, are fully retained, so that the software involved remains
applicable.
The market is in need of several network solutions, each with different performance
characteristics and functional capabilities, matching the diverse application requirements. RTE
performance indicators, whose values will be provided with RTE devices based on
communication profiles specified in the IEC 61784-2 series, enable the user to match network
devices with application-dependent performance requirements of an RTE network.
IEC 61784-2-14:2023 © IEC 2023 – 7 –
INDUSTRIAL NETWORKS –
PROFILES –
Part 2-14: Additional real-time fieldbus profiles
based on ISO/IEC/IEEE 8802-3 –
CPF 14
1 Scope
This part of IEC 61784-2 defines Communication Profile Family 14 (CPF 14). CPF 14 specifies
a set of Real-Time Ethernet (RTE) communication profiles (CPs) and related network
components based on the IEC 61158 series (Type 14), ISO/IEC/IEEE 8802-3 and other
standards.
For each RTE communication profile, this document also specifies the relevant RTE
performance indicators and the dependencies between these RTE performance indicators.
NOTE 1 All CPs are based on standards or draft standards or International Standards published by the IEC or on
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 in some cases amend those standards to obtain RTE features.
2 Normative references
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 All parts of the IEC 61158 series, as well as the IEC 61784-1 series and the IEC 61784-2 series, are
maintained simultaneously. Cross-references to these documents within the text therefore refer to the editions as
dated in this list of normative references.
IEC 61158 (all parts), Industrial communication networks – Fieldbus specifications
IEC 61158-3-14:2014, Industrial communication networks – Fieldbus specifications – Part 3-14:
Data-link layer service definition – Type 14 elements
IEC 61158-4-14:2014, Industrial communication networks – Fieldbus specifications – Part 4-14:
Data-link layer protocol specification – Type 14 elements
IEC 61158-5-14:2014, Industrial communication networks – Fieldbus specifications – Part 5-14:
Application layer service definition – Type 14 elements
IEC 61158-6-14:2014, Industrial communication networks – Fieldbus specifications – Part 6-14:
Application layer protocol specification – Type 14 elements
IEC 61588, Precision clock synchronization protocol for networked measurement and control
systems
IEC 61784-2-0:2023, Industrial networks – Profiles – Part 2-0: Additional real-time fieldbus
profiles based on ISO/IEC/IEEE 8802-3 – General concepts and terminology
– 8 – IEC 61784-2-14:2023 © IEC 2023
ISO/IEC/IEEE 8802-3, Telecommunications and exchange between information technology
systems – Requirements for local and metropolitan area networks – Part 3: Standard for
Ethernet
ISO/IEC/IEEE 8802-11, Information technology – Telecommunications and information
exchange between systems – Local and metropolitan area networks – Specific requirements –
Part 11: Wireless LAN medium access control (MAC) and physical layer (PHY) specifications
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
IEEE Std 802.1Q-2018, IEEE Standard for Local and Metropolitan Area Networks – Bridges and
Bridged Networks
IEEE Std 802.15.1-2005, IEEE Standard for Information technology – Local and metropolitan
area networks – Specific requirements – Part 15.1a: Wireless Medium Access Control (MAC)
and Physical Layer (PHY) specifications for Wireless Personal Area Networks (WPAN)
IETF RFC 768, J. Postel, User Datagram Protocol, August 1980, available at
https://www.rfc-editor.org/info/rfc768 [viewed 2022-02-18]
IETF RFC 791, J. Postel, Internet Protocol, September 1981, available at
https://www.rfc-editor.org/info/rfc791 [viewed 2022-02-18]
IETF RFC 792, J. Postel, Internet Control Message Protocol, September 1981, available at
https://www.rfc-editor.org/info/rfc792 [viewed 2022-02-18]
IETF RFC 793, J. Postel, Transmission Control Protocol, September 1981, available at
https://www.rfc-editor.org/info/rfc793 [viewed 2022-02-18]
IETF RFC 826, D. Plummer, An Ethernet Address Resolution Protocol: Or Converting Network
Protocol Addresses to 48.bit Ethernet Address for Transmission on Ethernet Hardware,
November 1982, available at https://www.rfc-editor.org/info/rfc826 [viewed 2022-02-18]
3 Terms, definitions, abbreviated terms, acronyms, and conventions
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61784-2-0,
ISO/IEC/IEEE 8802-3, IEEE Std 802-2014, IEEE Std 802.1AB-2016, IEEE Std 802.1AS-2020
and IEEE Std 802.1Q-2018 apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
IEC 61784-2-14:2023 © IEC 2023 – 9 –
3.2 Abbreviated terms and acronyms
For the purposes of this document, abbreviated terms and acronyms defined in IEC 61784-2-0
and the following apply.
ARP Address Resolution Protocol (see IETF RFC 826)
CP Communication Profile [according to IEC 61784-1-0]
CPF Communication Profile Family [according to IEC 61784-1-0]
ICMP Internet Control Message Protocol (see IETF RFC 792)
IETF Internet Engineering Task Force
IP Internet Protocol (see IETF RFC 791)
LLDP Link Layer Discovery Protocol (see IEEE Std 802.1AB-2016)
n.a. Not applicable
NoS Number of Switches
Phy PHY Physical layer entity sublayer (see ISO/IEC/IEEE 8802-3)
PI Performance indicator
PTP Precision Time Protocol (see IEC 61588)
RSTP Rapid Spanning Tree Algorithm and Protocol (see IEEE Std 802.1Q-2018)
TCP Transmission Control Protocol (see IETF RFC 793)
UDP User Datagram Protocol (see IETF RFC 768)
3.3 Symbols
For the purposes of this document, symbols defined in IEC 61784-2-0 and Table 1 apply.
NOTE Definitions of symbols in this Subclause 3.3 do not use the italic font, as they are already identified as
symbols.
– 10 – IEC 61784-2-14:2023 © IEC 2023
Table 1 – CPF 14 symbols
Symbol Definition Unit
DT Delivery time µs
D_size Data size octets
L Cable length m
Cable
N Length of complete Ethernet frame octets
data
NRTE_BW Non-RTE bandwidth %
N Number of switches between end-stations
Switch
RateofEthernet Ethernet data rate Mbit/s
RMData Redundancy management data octets
RTEData Real-time data octets
T Receiver stack processing time including Phy and MAC µs
Stack_R
T Cable delay µs
Cable
TD_Sw Time delay in switch µs
T Sender traversal time through MAC and Phy based on ISO/IEC/IEEE 8802-3 µs
Ethernet_S
ThroughputRTE RTE throughput octets/s
T Sender queuing delay µs
Queue_S
TSData Time synchronization data octets
T Sender stack processing time µs
Stack_S
T Switch delay µs
Switch
T Transfer time for one octet µs
Trf_S
T_wire Time per octet on a wire segment µs
STT_s Stack traversal time of the sender µs
STT_r Stack traversal time of the receiver µs
3.4 Conventions
For the purposes of this document, the conventions defined in IEC 61784-2-0 apply.
IEC 61784-2-14:2023 © IEC 2023 – 11 –
4 CPF 14 (EPA ) – RTE communication profiles
4.1 General overview
Communication Profile Family 14 (CPF 14) defines communication profiles based on
IEC 61158-3-14, IEC 61158-4-14, IEC 61158-5-14 and IEC 61158-6-14, which correspond to
parts of the communication systems commonly known as real-time EPA (Ethernet for Plant
Automation).
– Profile 14/1
This profile contains a selection of AL, DLL and PHL services and protocol definitions from
IEC 61158-3-14, IEC 61158-4-14, IEC 61158-5-14 and IEC 61158-6-14. This profile
provides real time communication using communication protocols from IEEE 802 and IETF
with accurate time synchronization based on IEC 61588.
This profile supports communications between master devices and bridges.
– Profile 14/2
This profile provides ISO/IEC/IEEE 8802-3-based real time communication with
deterministic communications defined in IEC 61158-3-14 and IEC 61158-4-14.
This profile supports communication between field devices and bridges.
– Profile 14/3
This profile contains a selection of AL, DLL and PHL services and protocol definitions from
IEC 61158-3-14, IEC 61158-4-14, IEC 61158-5-14 and IEC 61158-6-14. This profile
provides real time communication using communication protocols from IEEE 802.
Communication protocols from IETF can be used if necessary. Accurate time
synchronization based on IEC 61588 should be used.
– Profile 14/4
This profile provides ISO/IEC/IEEE 8802-3-based real time communication with
deterministic communications defined in IEC 61158-3-14 and IEC 61158-4-14. This profile
contains a selection of AL services and protocol definitions from IEC 61158-5-14 and
IEC 61158-6-14.
This profile supports communication between master devices and field devices.
4.2 CPF 14 (EPA) communication concept
4.2.1 General
The EPA system is a distributed system which uses the Ethernet network defined by
ISO/IEC/IEEE 8802-3 and the protocols from IEEE 802 and IETF to connect field devices and
small systems, and to control/monitor equipment in the industrial field. EPA devices work
together to provide I/O and control for automated processes and operations.
The EPA system architecture provides a framework for describing these systems as the
collection of physical devices interconnected by an EPA network. The objective of 4.2 is to
identify the components of the system, describe their relationships and interactions, and define
how they are configured.
4.2.2 Network Topology
Figure 1 shows an example of the EPA network topology with two subnets, process monitor
layer subnet (L2-subnet) and field device layer subnet (L1-subnet).
___________
EPA™ is a trade name of SUPCON Group Co. Ltd. This information is given for the convenience of users of this
document and does not constitute an endorsement by IEC of the trademark holder or any of its products.
Compliance with this profile does not require use of the trade name. Use of the trade name requires permission
of the trade name holder.
– 12 – IEC 61784-2-14:2023 © IEC 2023
The following describes the characteristics of EPA topology:
– a L1-subnet is used to connect field devices (such as transmitters, actuators and analytical
instruments, etc.) mounted in field environment;
– a L1-subnet can be separated into more than one micro-segment, where the time-sharing
controlling mechanism is used to meet the demands of deterministic communication;
– a L2-subnet is used to connect the devices of control center and HMI devices and one or
more micro-segments. In L2-subnet, regular communication schedule based on CSMA/CD
defined in ISO/IEC/IEEE 8802-3 is applied when deterministic communication is not
necessary;
– devices on both L1-subnets and L2-subnets may be interconnected with standard switches
or hubs;
– an EPA device may function as a bridge, which interconnects a L1-subnet micro-segment
to a L2-subnet. This EPA bridge performs message filtering and forwarding between L1-
subnet and L2-subnet.
Figure 1 – EPA system network topology example
A micro-segment is a control area, where EPA devices communicate with each other to
implement specific measuring and control functions. That is, the devices which need to
communicate with each other shall be interconnected in the same L1 micro-segment.
Those devices consisting of a control loop or function block application process, such as
transmitters, actuators and controllers which need to communicate with each other, shall be
interconnected in the same micro-segment.
4.2.3 EPA devices
4.2.3.1 EPA master device
An EPA master device is connected to a L2-subnet directly. An EPA master device has an EPA
communication interface but may have no control function block or function block application.
An EPA master device may commonly be a configuration device, a monitoring device or a HMI
station.
An EPA master device has a unique IP address in a system.
IEC 61784-2-14:2023 © IEC 2023 – 13 –
4.2.3.2 EPA field device
An EPA field device is installed in the industrial field environment. EPA field devices shall have
EPA a communication entity and at least include one function block instance.
An EPA field Device has a unique IP address in a system.
4.2.3.3 EPA bridge
An EPA bridge is an optional device that interconnects one L1-subnet micro-segment to a
L2-subnet. An EPA bridge has at least two communication interfaces, connecting one L1-subnet
micro-segment and one L2-subnet respectively.
An EPA bridge can be configured to provide the following functions:
• communication isolation
When the traffic occurs between two devices connected in one micro-segment, the EPA
bridge shall limit it within the segment. Here, the traffic includes broadcast, multicast and
peer to peer communication flows.
• message forwarding and filtering
An EPA bridge transmit shall forward and filter the messages between one L1-subnet micro-
segment and another L1-segment or L2-subnet. That is, when forwarding a message, the
EPA bridge shall examine whether it should be forwarded according to configured criteria.
NOTE As an optional device, an EPA bridge is not necessary if the number of nodes in a system is not too large.
4.2.3.4 EPA agent
An EPA agent is an optional device used to interconnect an EPA network and other different
networks. It shall provide the function of security control for the remote access.
4.3 CP 14/1
4.3.1 Physical layer
The physical layer of the EPA profile is according to ISO/IEC/IEEE 8802-3 for wired connection,
ISO/IEC/IEEE 8802-11 and IEEE Std 802.15.1-2005 for wireless connection.
4.3.2 Data-link layer
The data-link layer shall be according to ISO/IEC/IEEE 8802-3, IEEE Std 802.1Q-2018,
ISO/IEC/IEEE 8802-11 and IEEE Std 802.15.1-2005.
4.3.3 Network Layer
Internet standard IETF RFC 791 (IP), IETF RFC 826 (ARP), IETF RFC 792 (ICMP) and their
amendments and successors shall be used.
4.3.4 Transport Layer
Internet standard IETF RFC 768 (UDP), IETF RFC 793 (TCP) and their amendments and
successors may be used. But for real-time applications, IETF RFC 768 shall be used for field
devices, bridges and master devices.
4.3.5 Application layer
4.3.5.1 AL service selection
The application layer services for profile 14/1 are defined in IEC 61158-5-14. Table 2 specifies
the clauses included in this profile.
– 14 – IEC 61784-2-14:2023 © IEC 2023
Table 2 – CP 14/1: AL service selection
Clause Header Presence Constraints
1 Scope YES —
2 Normative references Partial Used when applicable
3 Terms, definitions, symbols, abbreviations Partial Used when applicable
4 Concepts Partial Used when applicable
5 Data type ASE YES —
6 Communication model specification YES —
4.3.5.2 AL protocol selection
The application layer protocols for profile 14/1 are defined in IEC 61158-6-14. Table 3 specifies
the clauses included in this profile.
Table 3 – CP 14/1: AL protocol selection
Clause Header Presence Constraints
1 Scope YES —
2 Normative references Partial Used when applicable
Terms, definitions, symbols, abbreviations and
3 Partial Used when applicable
conventions
4 Abstract syntax YES —
4.1 Fixed format PDU description YES —
4.2 Object definitions in FAL management ASE YES —
Definition of objects used in Type 14 application —
4.3 YES
access entity
5 Transfer syntax YES —
5.1 Encoding of basic data types YES —
5.2 Encoding of Type 14 APDU header YES —
Encoding of FAL management entity service —
5.3 YES
parameters
5.4 Encoding of AAE Services YES —
6 Structure of FAL protocol state machines YES —
7 AP-Context state machine YES —
8 FAL management state machines YES —
9 Application access entity protocol machine YES —
10 Application relationship state machine YES —
11 DLL mapping protocol machine YES —
4.3.6 Performance indicator selection
4.3.6.1 Performance indicator overview
Table 4 provides an overview of CP 14/1 performance indicators.
IEC 61784-2
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