IEC 61784-2-10:2023

Industrial networks - Profiles - Part 2-10: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 - CPF 10

IEC 61784-2-10:2023 defines Communication Profile Family 10 (CPF 10). CPF 10 specifies a Real-Time Ethernet (RTE) communication profile (CP) and related network components based on the IEC 61158 series (Type 17), 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.

Réseaux industriels - Profils - Partie 2-10: Profils de bus de terrain supplémentaires pour les réseaux en temps réel fondés sur l’ISO/IEC/IEEE 8802-3 - CPF 10

l’IEC 61784-2-10:2023 définit la famille de profils de communication 10 (CPF 10). La CPF 10 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 17), 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.

General Information

• Status: Published
• Publication Date: 21-Mar-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: 22-Mar-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 61784-2-10
®

Edition 1.0 2023-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial networks – Profiles –
Part 2-10: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 –
CPF 10

Réseaux industriels – Profils –
Partie 2-10: Profils de bus de terrain supplémentaires pour les réseaux en temps
réel fondés sur l’ISO/IEC/IEEE 8802-3 – CPF 10

IEC 61784 2-10:2023-03(en-fr)

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IEC 61784-2-10

®


Edition 1.0 2023-03




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE
colour

inside










Industrial networks – Profiles –

Part 2-10: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 –

CPF 10



Réseaux industriels – Profils –

Partie 2-10: Profils de bus de terrain supplémentaires pour les réseaux en


temps réel fondés sur l’ISO/IEC/IEEE 8802-3 – CPF 10













INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 35.100.20; 35.240.50 ISBN 978-2-8322-6623-6




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

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® Registered trademark of the International Electrotechnical Commission
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– 2 – IEC 61784-2-10:2023 © 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 10 (Vnet/IP) – RTE communication profiles . 9
4.1 General overview . 9
4.2 CP 10/1 . 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 . 14
Bibliography . 20

Table 1 – CPF 10 symbols . 9
Table 2 – OSI layers and CPF 10 layers . 10
Table 3 – Overview of CPF 10 profile . 10
Table 4 – CP 10/1: DLL service selection . 11
Table 5 – CP 10/1: DLL protocol selection . 12
Table 6 – Transport Layer Parameter selection . 12
Table 7 – CP 10/1: AL service selection . 14
Table 8 – CP 10/1: AL protocol selection . 14
Table 9 – CP 10/1: PI overview . 15
Table 10 – CP 10/1: PI dependency matrix . 15
Table 11 – CP 10/1: Consistent set of PIs for the communication between two
end-stations belonging to the same domain . 18
Table 12 – CP 10/1: Consistent set of PIs for the communication between two
end-stations belonging to different domains . 18
Table 13 – CP 10/1: Consistent set of PIs for the communication between two end-
stations belonging to the same domain with one lost flame . 19
Table 14 – CP 10/1: Consistent set of PIs for the communication between two
end-stations belonging to different domains with one lost frame . 19

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IEC 61784-2-10:2023 © IEC 2023 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

INDUSTRIAL NETWORKS –
PROFILES –

Part 2-10: Additional real-time fieldbus profiles
based on ISO/IEC/IEEE 8802-3 –
CPF 10

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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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
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NOTE Combinations of protocol types are specified in the IEC 61784-1 series and the IEC 61784-2 series.
IEC 61784-2-10 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 61784-2-10:2023 © 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 61784-2-10:2023 © 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 61784-2-10:2023 © IEC 2023
INDUSTRIAL NETWORKS –
PROFILES –

Part 2-10: Additional real-time fieldbus profiles
based on ISO/IEC/IEEE 8802-3 –
CPF 10



1 Scope
This part of IEC 61784-2 defines Communication Profile Family 10 (CPF 10). CPF 10 specifies
a Real-Time Ethernet (RTE) communication profile (CP) and related network components based
on the IEC 61158 series (Type 17), 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 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 61158-3-17:2007, Industrial communication networks – Fieldbus specifications – Part 3-17:
Data-link layer service definition – Type 17 elements
IEC 61158-4-17:2007, Industrial communication networks – Fieldbus specifications – Part 4-17:
Data-link layer protocol specification – Type 17 elements
IEC 61158-5-17:2007, Industrial communication networks – Fieldbus specifications – Part 5-17:
Application layer service definition – Type 17 elements
IEC 61158-6-17:2007, Industrial communication networks – Fieldbus specifications – Part 6-17:
Application layer protocol specification – Type 17 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 8802-2, Information technology – Telecommunications and information exchange
between systems – Local and metropolitan area networks – Specific requirements – Part 2:
Logical link control

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IEC 61784-2-10:2023 © IEC 2023 – 7 –
ISO/IEC/IEEE 8802-3, Telecommunications and exchange between 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
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]
IETF RFC 2236, W. Fenner, Internet Group Management Protocol, Version 2, November 1997,
available at https://www.rfc-editor.org/info/rfc2236 [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,
IEEE Std 802.1Q-2018 and the following 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
3.1.1
domain
part of the network consisting of one or two subnetwork(s)
Note 1 to entry: Two subnetworks are required to compose a dual-redundant network, and each end-station in the
domain is connected to both of the subnetworks.
3.1.2
router
intermediate equipment that connects two or more subnetworks using a network layer relay
function

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– 8 – IEC 61784-2-10:2023 © IEC 2023
3.1.3
subnetwork
part of a network that does not contain any routers
Note 1 to entry: A subnetwork consists of end-stations, bridges and segments.
Note 2 to entry: Every end-station included in a subnetwork has the same IP network address.
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]
IANA Internet Assigned Numbers Authority
ICMP Internet Control Message Protocol (see IETF RFC 792)
IETF Internet Engineering Task Force
IP Internet Protocol (see IETF RFC 791)
IPv4 Internet Protocol version 4 (see IETF RFC 791)
LLDP Link Layer Discovery Protocol (see IEEE Std 802.1AB-2016)
NoS Number of Switches
PI Performance indicator
RSTP Rapid Spanning Tree Algorithm and Protocol (see IEEE Std 802.1Q-2018)
TCP Transmission Control Protocol (see IETF RFC 793)
TOS Type of Service
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.

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IEC 61784-2-10:2023 © IEC 2023 – 9 –
Table 1 – CPF 10 symbols
Symbol Definition Unit
Cdly Cable delay µs
Clen Cable length m
Dlen Length of the complete Ethernet frame bit
DT Delivery time µs
DTlost1 Maximum delivery time with one lost frame for communication between two end- µs
stations belonging to the same domain
Maximum delivery time with one lost frame for communication between two end-
DTlost2 µs
stations belonging to different domains
DTmax1 Maximum delivery time for communication between two end-stations belonging to µs
the same domain
DTmax2 Maximum delivery time for communication between two end-stations belonging to µs
different domains
NoS Number of switches in path from sender to receiver –
Spd Switch delay under not congested condition µs
STTr Receiver stack transversal time including PhL, DLL and AP µs
STTs Sender stack transversal time including PhL, DLL and AP µs
Trate Transfer bit rate Mbit/s

3.4 Conventions
For the purposes of this document, the conventions defined in IEC 61784-2-0 apply.
1
4 CPF 10 (Vnet/IP ) – RTE communication profiles
4.1 General overview
Communication Profile Family 10 (CPF 10) defines communication profiles using the principles,
methodology and model of ISO/IEC 7498-1. In addition, it also follows the three-layer basic
fieldbus reference model described in IEC 61158-1.
The OSI model provides a layered approach to communication standards, whereby the layers
can be developed and modified independently. CPF 10 is based on the three-layer structure,
and each layer of OSI seven layers is mapped onto these three layers as follows.
Functions of the intermediate OSI layers, layers 5, 6 and 7, are consolidated into the Application
layer.
Functions of the intermediate OSI layers, layers 2, 3 and 4, are consolidated into the
data-link layer.
Likewise, some features common to users of the Fieldbus Application layer are provided to
simplify user operation.
Table 2 shows the OSI layers, their functions and the equivalent layers in the CPF10 layer
model.
___________
1
 Vnet/IP is a trade name of Yokogawa Electric Corporation. 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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– 10 – IEC 61784-2-10:2023 © IEC 2023
Table 2 – OSI layers and CPF 10 layers
OSI layer Function CPF 10 layer
7 Application Translates demands placed on the communication stack into a form Application
understood by the lower layers and vice versa
6 Presentation Converts data to/from standardized network formats
5 Session Synchronizes and manages data
4 Transport Provides transparent reliable data transfer Data-link
3 Network Performs message routing
2 Data-link Controls access to the communication medium. Performs error detection
1 Physical Encodes/decodes signals for transmission/reception in a form appropriate to Physical
the communication medium. Specifies communication media characteristics

Table 3 shows an overview of the communication profile for CPF 10.
Table 3 – Overview of CPF 10 profile
Layer Protocol
Application IEC 61158-6-17
Transport IETF RFC 768 and IEC 61158-4-17
Network IETF RFC 791
Data-link ISO/IEC 8802-2 and ISO/IEC/IEEE 8802-3
Physical ISO/IEC/IEEE 8802-3

4.2 CP 10/1
4.2.1 Physical layer
ISO/IEC/IEEE 8802-3 shall be used.
4.2.2 Data link layer
4.2.2.1 MAC sublayer
ISO/IEC/IEEE 8802-3 shall be used.
4.2.2.2 LLC sublayer
ISO/IEC/IEEE 8802-3 shall be used.
4.2.2.3 Network sublayer
4.2.2.3.1 General
Internet standard IETF RFC 791 and its amendments and successors shall be used.
Internet standard IETF RFC 2236 shall be used to perform multicasting.
4.2.2.3.2 Unicast address
IPv4 class C private address scope shall be used. Each subnetwork of a domain has the
respective IP network address as follows.
IP address for the interface connected to the primary network:

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IEC 61784-2-10:2023 © IEC 2023 – 11 –
– 192.168.(Domain number).(Host address)
IP address for the interface connected to the secondary network:
– 192.168.128+(Domain number).(Host address)
Each node of a redundant station has a respective IP host address as follows.
– Host address: (Station number) × 2 or (Station number) × 2 + 1
4.2.2.3.3 Group address
IPv4 class D Organization-Local Scope shall be used as group addr
...