IEC 61784-2-13:2023

Industrial networks - Profiles - Part 2-13: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 - CPF 13

IEC 61784-2-13:2023 defines Communication Profile Family 13 (CPF 13). CPF 13 specifies a Real-Time Ethernet (RTE) communication profile (CP) and related network components based on the IEC 61158 series (Type 13), 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 profile use ISO/IEC/IEEE 8802-3 communication networks and its related network components and in some cases amend those standards to obtain RTE features.

Réseaux industriels – Profils – Partie 2-13: Profils de bus de terrain supplémentaires pour les réseaux en temps réel fondés sur l’ISO/IEC/IEEE 8802-3 – CPF 13

L’IEC 61784-2-13:2023 définit la famille de profils de communication 13 (CPF 13). La CPF 13 spécifie un profil de communication (CP) Ethernet en temps réel (RTE, Real-Time Ethernet) et des composants de réseau associés basés sur la série IEC 61158 (type 13), 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.

General Information

• Status: Published
• Publication Date: 04-May-2023
• ICS: 35.100.20 - Data link layer
• ICS: 35.240.50 - IT applications in industry
• Technical Committee: SC 65C - Industrial networks
• Drafting Committee: WG 9 - TC 65/SC 65C/WG 9
• Current Stage: PPUB - Publication issued
• Start Date: 31-Mar-2023
• Completion Date: 05-May-2023

Relations

• Replaces: 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: 05-Sep-2023

Standards Content (Sample)

IEC 61784-2-13
®

Edition 1.0 2023-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Industrial networks – Profiles –
Part 2-13: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 –
CPF 13

Réseaux industriels – Profils –
Partie 2-13: Profils de bus de terrain supplémentaires pour les réseaux en temps
réel fondés sur l’ISO/IEC/IEEE 8802-3 – CPF 13

IEC 61784-2-13:2023-05(en-fr)

---------------------- Page: 1 ----------------------
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IEC 61784-2-13

®


Edition 1.0 2023-05




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE











Industrial networks – Profiles –

Part 2-13: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 –

CPF 13



Réseaux industriels – Profils –

Partie 2-13: Profils de bus de terrain supplémentaires pour les réseaux en


temps réel fondés sur l’ISO/IEC/IEEE 8802-3 – CPF 13













INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 35.100.20; 35.240.50 ISBN 978-2-8322-6902-2




Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 3 ----------------------
– 2 – IEC 61784-2-13:2023 © 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 . 7
3.3 Symbols . 8
3.4 Conventions . 8
4 CPF 13 (Ethernet POWERLINK) – RTE communication profiles . 8
4.1 General overview . 8
4.2 CP 13/1 . 9
4.2.1 Physical layer . 9
4.2.2 Data-link layer . 9
4.2.3 Application layer . 9
4.2.4 Performance indicator selection . 10
Bibliography . 16

Table 1 – CPF 13 symbols . 8
Table 2 – CPF 13: Overview of profile sets . 9
Table 3 – CP 13/1: DLL service selection . 9
Table 4 – CP 13/1: DLL protocol selection . 9
Table 5 – CP 13/1: AL service selection . 9
Table 6 – CP 13/1: AL protocol selection . 10
Table 7 – CP 13/1: PI overview . 10
Table 8 – CP 13/1: PI dependency matrix . 11
Table 9 – CP 13/1: Consistent set of PIs small size automation system . 14
Table 10 – CP 13/1: Consistent set of PIs medium size automation system . 14
Table 11 – CP 13/1: Consistent set of PIs large size automation system . 15

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IEC 61784-2-13:2023 © IEC 2023 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

INDUSTRIAL NETWORKS –
PROFILES –

Part 2-13: Additional real-time fieldbus profiles
based on ISO/IEC/IEEE 8802-3 –
CPF 13

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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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 61784-2-13 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.

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– 4 – IEC 61784-2-13:2023 © IEC 2023
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.

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IEC 61784-2-13:2023 © IEC 2023 – 5 –
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.

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– 6 – IEC 61784-2-13:2023 © IEC 2023
INDUSTRIAL NETWORKS –
PROFILES –

Part 2-13: Additional real-time fieldbus profiles
based on ISO/IEC/IEEE 8802-3 –
CPF 13



1 Scope
This part of IEC 61784-2 defines Communication Profile Family 13 (CPF 13). CPF 13 specifies
a Real-Time Ethernet (RTE) communication profile (CP) and related network components based
on the IEC 61158 series (Type 13), 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 profile use ISO/IEC/IEEE 8802-3 communication networks and its related network
components 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 61158-3-13:2014, Industrial communication networks – Fieldbus specifications – Part 3-13:
Data-link layer service definition – Type 13 elements
IEC 61158-4-13:2014, Industrial communication networks – Fieldbus specifications – Part 4-13:
Data-link layer protocol specification – Type 13 elements
IEC 61158-5-13:2014, Industrial communication networks – Fieldbus specifications – Part 5-13:
Application layer service definition – Type 13 elements
IEC 61158-6-13:2014, Industrial communication networks – Fieldbus specifications – Part 6-13:
Application layer protocol specification – Type 13 elements
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
ISO/IEC/IEEE 8802-3, Telecommunications and exchange between information technology
systems – Requirements for local and metropolitan area networks – Part 3: Standard for
Ethernet

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IEC 61784-2-13:2023 © IEC 2023 – 7 –
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
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]
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
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.
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 802.1AB-2016)
PI Performance indicator
RSTP Rapid Spanning Tree Algorithm and Protocol (see IEEE 802.1Q-2018)
TCP Transmission Control Protocol (see IETF RFC 793)
UDP User Datagram Protocol (see IETF RFC 768)

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– 8 – IEC 61784-2-13:2023 © IEC 2023
3.3 Symbols
For the purposes of this document, symbols defined in IEC 61784-2-0 and Table 1 apply.
Table 1 – CPF 13 symbols
Symbol Definition Unit
B Non-RTE bandwidth %
NRTE
M Network MTU (maximum transmission unit) octets
N Number of RTE end-stations processed in one communication cycle –
T Time reserved for non-RTE data within one communication cycle µs
A
T Communication cycle time µs
C
T Delivery time µs
D
T RTE frames transmission time for RTE end-station i µs
FT,i
T Processing time in the receiving end-station µs
PR
T Processing time in the sending end-station µs
PS
T Response delay of the RTE end-station i µs
RD,i
T Communication cycle start delay µs
S
T Sum of all delays of infrastructure components (switches, hubs, cabling) for the µs
SD,i
RTE end-station i

3.4 Conventions
For the purposes of this document, the conventions defined in IEC 61784-2-0 apply.
1
4 CPF 13 (Ethernet POWERLINK ) – RTE communication profiles
4.1 General overview
Communication Profile Family 13 (CPF 13) defines a profile using Type 13 of the IEC 61158
series, which corresponds to the communication system commonly known as Ethernet
POWERLINK.
– Profile 13/1
This profile contains AL, and DLL services and protocol definitions from IEC 61158-3-13,
IEC 61158-4-13, IEC 61158-5-13 and IEC 61158-6-13.
Table 2 shows the overview of Ethernet POWERLINK profile set.
___________
1
 Ethernet POWERLINK is a trade name of Bernecker&Rainer Industrieelektronik Ges.m.b.H., control of trade name
use is given to the non profit organization EPSG. 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.

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IEC 61784-2-13:2023 © IEC 2023 – 9 –
Table 2 – CPF 13: Overview of profile sets
Layer Profile 13/1
Application IEC 61158-5-13, IEC 61158-6-13
Data-link IEC 61158-3-13, IEC 61158-4-13
Physical ISO/IEC/IEEE 8802-3

4.2 CP 13/1
4.2.1 Physical layer
The physical layer shall be according to ISO/IEC/IEEE 8802-3.
4.2.2 Data-link layer
4.2.2.1 DLL services selection
The data-link layer services are defined in IEC 61158-3-13. Table 3 shows the subclauses
included in this profile.
Table 3 – CP 13/1: DLL service selection
Clause Header Presence Constraints
Whole Data link service specification (Type 13) YES —
document

4.2.2.2 DLL protocol selection
The data-link layer protocols are defined in IEC 61158-4-13. Table 4 shows the subclauses
included in this profile.
Table 4 – CP 13/1: DLL protocol selection
Clause Header Presence Constraints
Whole Data link protocol specification (Type 13) YES —
document

4.2.3 Application layer
4.2.3.1 AL service selection
The application layer services are defined in IEC 61158-5-13. Table 5 shows the subclauses
included in this profile.
Table 5 – CP 13/1: AL service selection
Clause Header Presence Constraints
Whole Application layer service specification (Type 13) YES —
document

4.2.3.2 AL protocol selection
The application layer protocols are defined in IEC 61158-6-13. Table 6 shows the subclauses
included in this profile.

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– 10 – IEC 61784-2-13:2023 © IEC 2023
Table 6 – CP 13/1: AL protocol selection
Clause Header Presence Constraints
Whole Application layer protocol specification (Type 13) YES —
document

4.2.4 Performance indicator selection
4.2.4.1 Performance indicator overview
Table 7 shows the performance indicators overview of CP 13/1.
Table 7 – CP 13/1: PI overview
Performance indicator Applicable Constraints
Delivery Time YES —
Number of end-stations YES —
Basic network topology YES Star and linear topology
Number of switches between end-stations YES For highest performance use repeaters instead of
switches
Throughput RTE YES —
Non-RTE bandwidth YES —
Time synchronization accuracy YES —
Non time-based synchronization accuracy YES —
Redundancy recovery time YES —

4.2.4.2 Performance indicator dependencies
4.2.4.2.1 Performance indicator dependency matrix
Table 8 shows the dependencies between performance indicators for CP 13/1.

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IEC 61784-2-13:2023 © IEC 2023 – 11 –
Table 8 – CP 13/1: PI dependency matrix
Influencing PI
Dependent
PI
Delivery YES YES YES
NO NO NO NO
time 4.2.4.2.5 4.2.4.2.6 4.2.4.2.8
Number of YES
NO NO NO NO NO NO
end-stations 4.2.4.2.3
Basic
YES YES YES YES
network NO NO NO
4.2.4.2.4 4.2.4.2.11 4.2.4.2.12 4.2.4.2.13
topology
Throughput YES
NO NO NO NO NO NO
RTE 4.2.4.2.10
Non-RTE YES YES
NO NO NO NO NO
bandwidth 4.2.4.2.7 4.2.4.2.9
Time syn-
chronization
NO NO NO NO NO NO NO
accuracy
Non-time-
based syn-
NO NO NO NO NO NO NO
chronization
accuracy
Redundancy
recovery NO NO NO NO NO NO NO
time

4.2.4.2.2 Delivery time
The delivery time is dependent on the communication cycle time and properties of the specific
end-station. Data which is produced is transmitted in the following communication cycle and
processed by the receiving node at the beginning of the third communication cycle.
The delivery time for communication between two RTE end-stations can be calculated by
Formula (1).

T= T+TT+
(1)
D PS C PR

where
T is the delivery time;
D
is the communication cycle time, see Formula (2);
T
C
T is the processing time in the receiving end-station.
PR
T is the processing time in the sending end-station.
PS
Delivery time
Number of
end-stations
Basic network
topology
Throughput RTE
Non-RTE
bandwidth
Time
synchronization
accuracy
Non-time-based
synchronization
accuracy
Redundancy
recovery time

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– 12 – IEC 61784-2-13:2023 © IEC 2023
The communication cycle time T can be calculated by Formula (2).
C
N

T=TT++ T +T +T
( ) (2)
∑
C S A FT,i RD,i SD,i
i=1

where
T is the communication cycle time;
C
T is the communication cycle start delay;
S
N is the number of RTE end-stations processed in one communication cycle;
T is the RTE frames transmission time for RTE end-station i (depends on the amount of
FT,i
APDU data for this node);
T is the response delay of the RTE end-station i;
RD,i
T is the sum of all delays of infrastructure components (switches, repeaters, cabling) for the
SD,i
RTE end-station i;
T is the time reserved for non-RTE data within one communication cycle.
A
The delivery time with one lost frame for communication between two RTE end-stations can be
calculated by Formula (3).
T T+×2 TT+
(
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