EN IEC 61784-1-2:2023

SLOVENSKI STANDARD
01-november-2023
Industrijska omrežja - Profili - 1-2. del: Profili procesnih vodil - Komunikacijski
profil skupine 2 (IEC 61784-1-2:2023)
Industrial networks - Profiles - Part 1-2: Fieldbus profiles - Communication Profile Family
2 (IEC 61784-1-2:2023)
Industrielle Kommunikationsnetze - Profile - Teil 1-2: Feldbusprofile -
Kommunikationsprofilfamilie (CPF) 2 (IEC 61784-1-2:2023)
Réseaux industriels - Profils - Partie 1-2: Profils de bus de terrain - Famille de profils de
communication 2 (IEC 61784-1-2:2023)
Ta slovenski standard je istoveten z: EN IEC 61784-1-2:2023
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 61784-1-2

NORME EUROPÉENNE
EUROPÄISCHE NORM April 2023
ICS 35.100.20; 35.240.50 Supersedes EN IEC 61784-1:2019 (partially)
English Version
Industrial networks - Profiles - Part 1-2: Fieldbus profiles -
Communication Profile Family 2
(IEC 61784-1-2:2023)
Réseaux industriels - Profils - Partie 1-2: Profils de bus de Industrielle Kommunikationsnetze - Profile - Teil 1-2:
terrain - Famille de profils de communication 2 Feldbusprofile - Kommunikationsprofilfamilie (CPF) 2
(IEC 61784-1-2:2023) (IEC 61784-1-2:2023)
This European Standard was approved by CENELEC on 2023-04-26. 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 61784-1-2:2023 E

European foreword
The text of document 65C/1207/FDIS, future edition 1 of IEC 61784-1-2, 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 EN IEC 61784-1-2:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-01-26
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-04-26
document have to be withdrawn
This document, together with other parts of the same series, partially supersedes EN IEC 61784-
1:2019 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 61784-1-2:2023 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 60793 (series) NOTE Approved as EN IEC 60793 (series)
IEC 61158-1 NOTE Approved as EN IEC 61158-1
IEC 61158-3 (series) NOTE Approved as EN 61158-3 (series)
IEC 61158-4 (series) NOTE Approved as EN 61158-4 (series)
IEC 61158-5 (series) NOTE Approved as EN 61158-5 (series)
IEC 61158-6 (series) NOTE Approved as EN 61158-6 (series)
IEC 61784-2 (series) NOTE Approved as EN IEC 61784-2 (series)
IEC 61784-2-2 NOTE Approved as EN IEC 61784-2-2
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 - EN IEC 61158 series
Fieldbus specifications
IEC 61158-2 2023 Industrial communication networks - EN IEC 61158-2 2023
Fieldbus specifications - Part 2: Physical
layer specification and service definition
IEC 61158-3-2 2023 Industrial communication networks - EN IEC 61158-3-2 2023
Fieldbus specifications - Part 3-2: Data-link
layer service definition - Type 2 elements
IEC 61158-4-2 2023 Industrial communication networks - EN IEC 61158-4-2 2023
Fieldbus specifications - Part 4-2: Data-link
layer protocol specification - Type 2
elements
IEC 61158-5-2 2023 Industrial communication networks - EN IEC 61158-5-2 2023
Fieldbus specifications - Part 5-2:
Application layer service definition - Type 2
elements
IEC 61158-6-2 2023 Industrial communication networks - EN IEC 61158-6-2 2023
Fieldbus specifications - Part 6-2:
Application layer protocol specification -
Type 2 elements
IEC 61588 2009 Precision clock synchronization protocol for - -
networked measurement and control
systems
IEC 61784-1-0 2023 Industrial networks - Profiles - Part 1-0: EN IEC 61784-1-0 2023
Fieldbus profiles - General concepts and
terminology
IEC 61784-5-2 - Industrial communication networks - EN IEC 61784-5-2 -
Profiles - Part 5-2: Installation of fieldbuses
- Installation profiles for CPF 2
IEC 61918 - Industrial communication networks - EN IEC 61918 -
Installation of communication networks in
industrial premises
IEC 62026-3 - Low-voltage switchgear and controlgear - - -
Controller-device interfaces (CDIs) - Part 3:
DeviceNet
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 11898-1 - Road vehicles - Controller area network - -
(CAN) - Part 1: Data link layer and physical
signalling
ISO 11898-2 - Road vehicles - Controller area network - -
(CAN) - Part 2: High-speed medium
access unit
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 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 1112 1989 Host Extensions for IP Multicasting - -
IETF RFC 1122 1989 Requirements for Internet Hosts - - -
Communication Layers
IETF RFC 1123 1989 Requirements for Internet Hosts - - -
Application and Support
IETF RFC 1127 1989 A Perspective on the Host Requirements - -
RFCs
IETF RFC 2236 1997 Internet Group Management Protocol, - -
Version 2
IEC 61784-1-2 ®
Edition 1.0 2023-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial networks – Profiles –
Part 1-2: Fieldbus profiles – Communication Profile Family 2
Réseaux industriels – Profils –
Partie 1-2: Profils de bus de terrain – Famille de profils de communication 2
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 35.100.20; 35.240.50 ISBN 978-2-8322-6584-0
– 2 – IEC 61784-1-2:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, abbreviated terms, symbols, and conventions . 9
3.1 Terms and definitions . 9
3.2 Abbreviations and symbols . 9
3.2.1 Common abbreviations and symbols . 9
3.2.2 Other abbreviations and symbols . 9
3.3 Conventions . 9
4 CPF 2 (CIP™) . 9
4.1 General overview . 9
4.2 CP 2/1 (ControlNet) . 10
4.2.1 Physical layer . 10
4.2.2 Data-link layer . 12
4.2.3 Application layer . 14
4.3 CP 2/2 (EtherNet/IP) . 17
4.3.1 Physical layer . 17
4.3.2 Data-link layer . 17
4.3.3 Application layer . 19
4.4 CP 2/3 (DeviceNet) . 25
4.4.1 Physical layer . 25
4.4.2 Data-link layer . 25
4.4.3 Application layer . 27
Annex A (informative) CPF 2 (CIP) communication concepts . 33
A.1 Overview. 33
A.2 CIP common characteristics . 33
A.3 ControlNet . 33
A.3.1 Physical layer characteristics . 33
A.3.2 Data-link layer characteristics . 34
A.3.3 Management characteristics . 34
A.4 EtherNet/IP . 34
A.5 DeviceNet . 35
Bibliography . 36

Table 1 – CPF 2: overview of profile sets . 10
Table 2 – CP 2/1: PhL selection . 11
Table 3 – CP 2/1: DLL service selection. 12
Table 4 – CP 2/1: DLL protocol selection . 13
Table 5 – CP 2/1: DLL protocol selection of management objects . 13
Table 6 – CP 2/1: AL service selection . 14
Table 7 – CP 2/1: AL protocol selection . 15
Table 8 – ClockIdentity encoding for CP 2/1 . 16
Table 9 – CP 2/2: DLL protocol selection . 18
Table 10 – CP 2/2: DLL protocol selection of management objects . 19

IEC 61784-1-2:2023 © IEC 2023 – 3 –
Table 11 – CP 2/2: AL service selection . 20
Table 12 – CP 2/2: AL protocol selection . 21
Table 13 – ClockIdentity encoding for CP 2/2 . 22
Table 14 – CP 2/2 implementation profiles . 23
Table 15 – Features Supported for Type 2 Ethernet Transports implementation profile . 23
Table 16 – Type 2 Ethernet transport profile supported Features . 24
Table 17 – Supported Encapsulation Commands for transport profiles . 24
Table 18 – CP 2/3: DLL protocol selection . 26
Table 19 – CP 2/3: DLL protocol selection of management objects . 26
Table 20 – CP 2/3: AL service selection . 27
Table 21 – CP 2/3: AL protocol selection . 28
Table 22 – Unconnected_Send request format (modified) . 29
Table 23 – Unconnected_Send_Good response format (modified) . 30
Table 24 – Unconnected_Send_Bad response format (modified) . 30
Table 25 – ClockIdentity encoding for CP 2/3 . 31
Table 26 – Additional values of the state attribute . 31
Table 27 – Additional value of the watchdog_timeout_action attribute . 31

– 4 – IEC 61784-1-2:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL NETWORKS –
PROFILES –
Part 1-2: Fieldbus profiles –
Communication Profile Family 2

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 61784-1-2 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 fifth
edition of IEC 61784-1 published in 2019. This first edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to
IEC 61784-1:2019:
IEC 61784-1-2:2023 © IEC 2023 – 5 –
a) split of the original IEC 61784-1 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;
b) addition of two DLL protocol management objects;
c) addition of profile information removed from the Type standards.
The text of this International Standard is based on the following documents:
Draft Report on voting
65C/1207/FDIS 65C/1236/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 61784-1 series, published under the general title Industrial networks
– Profiles – Part 1: Fieldbus profiles, 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 61784-1-2:2023 © IEC 2023
INTRODUCTION
The IEC 61784-1 series provides a set of Communication Profiles (CP) in the sense of
ISO/IEC TR 10000-1. These answer the need of identifying the protocol families co-existing
within the IEC 61158 series, as a result of the international harmonization of fieldbus
technologies available on the market. More specifically, these profiles help to correctly state
the compliance with the IEC 61158 series, and to avoid the spreading of divergent
implementations, which would limit its use, clearness and understanding. Additional profiles to
address specific market concerns, such as functional safety or information security, can be
addressed by future parts of the IEC 61784-1 series.
The IEC 61784-1 series contains several Communication Profile Families (CPF), which specify
one or more communication profiles. Such profiles identify, in a strict sense, protocol subsets
of the IEC 61158 series via protocol specific communication profiles. They do not define device
profiles that specify communication profiles together with application functions needed to
answer the need of a specific application ("application profiles").
It is agreed that these latter classes of profiles would facilitate the use of the IEC 61158 series
of standards; the profiles defined in the IEC 61784-1 series are a necessary step to achieve
that task.
It is also important to clarify that interoperability – defined as the ability of two or more network
systems to exchange information and to make mutual use of the information that has been
exchanged (see ISO/IEC TR 10000-1) – can be directly achieved on the same link only for those
devices complying with the same communication profile.
Profiles contained in the IEC 61784-1 series are constructed of references to IEC 61158-2 and
the IEC 61158-3, IEC 61158-4, IEC 61158-5 and IEC 61158-6 series, and other IS, TS or
worldwide-accepted standards, as appropriate . Each profile is required to reference at least
one part of the IEC 61158 series in addition to IEC 61158-1.
Two or more Profiles, which are related to a common family, are specified within a
"Communication Profile Family" (CPF).

___________
International Standardised Profiles may contain normative references to specifications other than International
Standards; see ISO/IEC JTC 1 N 4047: The Normative Referencing of Specifications other than International
Standards in JTC 1 International Standardized Profiles – Guidelines for ISP Submitters.

IEC 61784-1-2:2023 © IEC 2023 – 7 –
INDUSTRIAL NETWORKS –
PROFILES –
Part 1-2: Fieldbus profiles –
Communication Profile Family 2

1 Scope
This part of IEC 61784-1 defines Communication Profile Family 2 (CPF 2). CPF 2 specifies a
set of protocol specific communication profiles (CPs) based on the IEC 61158 series (Type 2)
and other standards, to be used in the design of devices involved in communications in factory
manufacturing and process control.
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 Some CPs of CPF 2 are specified in IEC 61784-2-2.
Each CP selects an appropriate consistent and compatible subset of services and protocols
from the relevant set that is defined and modelled in the IEC 61158 series. For the selected
subset of services and protocols, the profile also describes any possible or necessary
constraints in parameter values.
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 61158-2:2023, Industrial communication networks – Fieldbus specifications – Part 2:
Physical layer specification and service definition
IEC 61158-3-2:2023, Industrial communication networks – Fieldbus specifications – Part 3-2:
Data-link layer service definition – Type 2 elements
IEC 61158-4-2:2023, Industrial communication networks – Fieldbus specifications – Part 4-2:
Data-link layer protocol specification – Type 2 elements
IEC 61158-5-2:2023, Industrial communication networks – Fieldbus specifications – Part 5-2:
Application layer service definition – Type 2 elements
IEC 61158-6-2:2023, Industrial communication networks – Fieldbus specifications – Part 6-2:
Application layer protocol specification – Type 2 elements
IEC 61588:2021, Precision clock synchronization protocol for networked measurement and
control systems
– 8 – IEC 61784-1-2:2023 © IEC 2023
IEC 61784-1-0:2023, Industrial networks – Profiles – Part 1-0: Fieldbus profiles – General
concepts and terminology
IEC 61784-5-2, Industrial communication networks – Profiles – Part 5-2: Installation of
fieldbuses – Installation profiles for CPF 2
IEC 61918, Industrial communication networks – Installation of communication networks in
industrial premises
IEC 62026-3, Low-voltage switchgear and controlgear – Controller-device interfaces (CDIs) –
Part 3: DeviceNet
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 11898-1, Road vehicles – Controller area network (CAN) – Part 1: Data link layer and
physical signalling
ISO 11898-2, Road vehicles – Controller area network (CAN) – Part 2: High-speed medium
access unit
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]
IETF RFC 894, C. Hornig, A Standard for the Transmission of IP Datagrams over Ethernet, April
1984, available at https://www.rfc-editor.org/info/rfc894 [viewed 2022-02-18]
IETF RFC 1112, S.E. Deering, Host Extensions for IP Multicasting, August 1989, available at
https://www.rfc-editor.org/info/rfc1112 [viewed 2022-02-18]
IETF RFC 1122, R. Braden, Requirements for Internet Hosts – Communication Layers, October
1989, available at https://www.rfc-editor.org/info/rfc1122 [viewed 2022-02-18]
IETF RFC 1123, R. Braden, Requirements for Internet Hosts – Application and Support,
October 1989, available at https://www.rfc-editor.org/info/rfc1123 [viewed 2022-02-18]
IETF RFC 1127, R.T. Braden, Perspective on the Host Requirements RFCs, October 1989,
available at https://www.rfc-editor.org/info/rfc1127 [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]

IEC 61784-1-2:2023 © IEC 2023 – 9 –
3 Terms, definitions, abbreviated terms, symbols, and conventions
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in the IEC 61158 series and
IEC 61784-1-0 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 Abbreviations and symbols
3.2.1 Common abbreviations and symbols
For the purposes of this document, all abbreviations and symbols defined in the IEC 61158
series and IEC 61784-1-0 apply.
CP communication profile
CPF communication profile family
MAU medium attachment unit
3.2.2 Other abbreviations and symbols
CAN Controller Area Network (see ISO 11898-1)
IP internet protocol (see IETF RFC 791)
TCP terminal control protocol (see IETF RFC 793)
UDP user datagram protocol (see IETF RFC 768)
3.3 Conventions
For the purposes of this document, the conventions defined in IEC 61784-1-0 apply.
4 CPF 2 (CIP™ )
4.1 General overview
Communication Profile Family 2 defines several communication profiles based on IEC 61158-2
(protocol type 2), IEC 61158-3-2, IEC 61158-4-2, IEC 61158-5-2, and IEC 61158-6-2, and on
other standards. These profiles all share for their upper layers the same communication system
commonly known as the Common Industrial Protocol (CIP).
This document defines three communication profiles.
1) Profile 2/1 ControlNet™
This profile contains a selection of AL, DLL and PhL services and protocol definitions from
IEC 61158-2 type 2, IEC 61158-3-2, IEC 61158-4-2, IEC 61158-5-2, and IEC 61158-6-2.
___________
CIP™ is a trade name of ODVA, Inc. 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 CIP™. Use of the trade name CIP™ requires permission of ODVA,
Inc.
ControlNet™ is a trade name of ODVA, Inc. 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 ControlNet™. Use of the trade name
ControlNet™ requires permission of ODVA, Inc.

– 10 – IEC 61784-1-2:2023 © IEC 2023
This profile uses the CIP common protocol and services in conjunction with the specific
protocol type 2 DLL and PhL.
2) Profile 2/2 EtherNet/IP™
This profile contains a selection of AL, DLL and PhL services and protocol definitions from
IEC 61158-4-2, IEC 61158-5-2 and IEC 61158-6-2, and the TCP/UDP/IP/Ethernet protocol
suite. This profile uses the CIP protocol and services in conjunction with the standard
internet and Ethernet standards.
3) Profile 2/3 DeviceNet™
This profile contains a selection of AL, DLL and PhL services and protocol definitions from
IEC 61158-4-2, IEC 61158-5-2 and IEC 61158-6-2, and IEC 62026-3. This profile uses the
CIP protocol and services in conjunction with the CAN DLL and PhL (ISO 11898-1 and
ISO 11898-2), and additional elements specified in IEC 62026-3.
NOTE 1 See Annex A for an overview of CIP and related networks communications concepts.
NOTE 2 Additional CPs are defined in IEC 61784-2-2.
It is strongly recommended that implementers of a specific profile comply with the appropriate
conformance tests and validations provided by ODVA.
Table 1 gives a general overview of the corresponding profile sets.
Table 1 – CPF 2: overview of profile sets
Layer CP 2/1 (ControlNet) CP 2/2 (EtherNet/IP) CP 2/3 (DeviceNet)
Application IEC 61158-5-2, IEC 61158-5-2, IEC 61158-5-2,
IEC 61158-6-2 IEC 61158-6-2 IEC 61158-6-2,
IEC 62026-3
Transport — TCP/UDP —
a
(IETF RFC 793, IETF RFC 768)
a
Network — —
IP (IETF RFC 791)
Data Link IEC 61158-3-2, ISO/IEC/IEEE 8802-3 ISO 11898-1, IEC 62026-3
IEC 61158-4-2
b
Physical Type 2 of IEC 61158-2 ISO 11898-1 and ISO 11898-2,
ISO/IEC/IEEE 8802-3
IEC 62026-3
a
Additional IETF RFC standards apply.
b
Recommended connectors and cables are specified in IEC 61918 and IEC 61784-5-2.

4.2 CP 2/1 (ControlNet)
4.2.1 Physical layer
Table 2 specifies the PhL selection within IEC 61158-2.
___________
EtherNet/IP™ is a trade name of ODVA, Inc. 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 EtherNet/IP™. Use of the trade name
EtherNet/IP™ requires permission of ODVA, Inc.
DeviceNet™ is a trade name of ODVA, Inc. 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 DeviceNet™. Use of the trade name DeviceNet™ requires
permission of ODVA, Inc.
IEC 61784-1-2:2023 © IEC 2023 – 11 –
Table 2 – CP 2/1: PhL selection
Clause Header Presence Constraints
1 Scope YES —
2 Normative references Partial Relevant references only
3 Terms and definitions — —
3.1 Common terms and definitions Partial Relevant definitions only
3.2 Type 1: Terms and definitions NO —
3.3 Type 2: Terms and definitions YES —
Next — NO —
subclauses
4 Symbols and abbreviated terms — —
4.1 Symbols — —
4.1.1 Type 1: Symbols NO —
4.1.2 Type 2: Symbols YES —
Next — NO —
subclauses
4.2 Abbreviated terms — —
4.2.1 Type 1: Abbreviations NO —
4.2.2 Type 2: Abbreviations YES —
Next — NO —
subclauses
5 DLL – PhL interface — —
5.1 General YES —
5.2 Type 1: Required services NO —
5.3 Type 2: Required services YES —
Next
— NO —
subclauses
6 – 8 — NO —
9 Medium dependent sublayer (MDS) — —
9.1 General YES —
9.2 – 9.3 — NO —
9.4 Type 2: MDS: Wire and optical media YES —
Next — NO —
subclauses
10 MDS – MAU interface — —
10.1 General YES —
10.2 – 10.3 — NO —
10.4 Type 2: MDS – MAU interface: Wire and optical YES Used MAU(s) are selected
media at device level
Next — NO —
subclauses
11 – 17 — NO —
18 Type 2: Medium attachment unit: 5 Mbit/s, voltage- YES Used MAU(s) are selected
mode, coaxial wire medium at device level
19 Type 2: Medium attachment unit: 5 Mbit/s, optical YES Used MAU(s) are selected
medium at device level
20 Type 2: Medium attachment unit: network access port YES Used MAU(s) are selected
(NAP) at device level
Next clauses — NO —
– 12 – IEC 61784-1-2:2023 © IEC 2023
Clause Header Presence Constraints
Annex A – E — NO —
Annex F (normative) Type 2: Connector specification YES —
Annex G (normative) Type 2: Repeater machine sublayers YES —
(RM, RRM) and redundant PhLs
Annex H (informative) Type 2: Reference design examples YES —
Next annexes — NO —
Recommended connectors and cables are specified in IEC 61918 and IEC 61784-5-2.
4.2.2 Data-link layer
4.2.2.1 DLL service selection
Table 3 specifies the DLL service selection within IEC 61158-3-2.
Table 3 – CP 2/1: DLL service selection
Clause Header Presence Constraints
1 Scope YES —
2 Normative references YES —
3 Terms, definitions, symbols, abbreviated terms and YES —
conventions
4 Connection-mode and connectionless-mode data-link service YES —
5 DL-management services YES —

4.2.2.2 DLL protocol selection
4.2.2.2.1 General
Table 4 specifies the DLL protocol selection within IEC 61158-4-2.

IEC 61784-1-2:2023 © IEC 2023 – 13 –
Table 4 – CP 2/1: DLL protocol selection
Clause Header Presence Constraints
1 Scope YES —
2 Normative references YES —
3 Terms, definitions, symbols, abbreviated terms and YES —
conventions
4 Overview of the data-link protocol YES —
5 General structure and encoding of PhIDUs and YES —
DLPDUs and related elements of procedure
6 Specific DLPDU structure, encoding and YES —
procedures
7 Objects for station management — See Table 5
8 Other DLE elements of procedure YES —
9 Detailed specification of DL components YES —
Next clauses — NO —
Annex A (normative) – Indicators and switches — —
A.1 Purpose YES —
A.2 Indicators — —
A.2.1 General indicator requirements YES —
A.2.2 Common indicator requirements YES —
A.2.3 Fieldbus specific indicator requirements – option 1 YES —
A.2.4 Fieldbus specific indicator requirements – option 2 NO —
A.2.5 Fieldbus specific indicator requirements – option 3 NO —
A.3 Switches — —
A.3.1 Common switch requirements YES —
A.3.2 Fieldbus specific switch requirements – option 1 YES —
A.3.3 Fieldbus specific switch requirements – option 2 NO —
A.3.4 Fieldbus specific switch requirements – option 3 NO —

Table 5 specifies the management objects selection.
Table 5 – CP 2/1: DLL protocol selection of management objects
Clause Header Presence Constraints
7 Objects for station management — —
7.1 General Partial Relevant objects only
7.2 ControlNet object YES —
7.3 Keeper object YES —
7.4 Scheduling object YES —
7.5 – 7.7 — NO —
7.8 Connection configuration object YES See 4.2.2.2.2
7.9 – 7.10 — NO —
7.11 Port object YES See 4.2.2.2.3
Next — NO —
subclauses
– 14 – IEC 61784-1-2:2023 © IEC 2023
4.2.2.2.2 Connection configuration object
The value of the class attribute Edit signature is incremented each time a change complete
operation is performed.
The instance attribute CS Data Index Number is required for a device on CP 2/1.
4.2.2.2.3 Port object
The Port object refers to a logical link/network interface on the device, i.e. the interface used
to address it. For CP 2/1, the logical link address is the MAC_ID.
4.2.3 Application layer
4.2.3.1 AL service selection
4.2.3.1.1 General
Table 6 specifies the AL service selection within IEC 61158-5-2.
Table 6 – CP 2/1: AL service selection
Clause Header Presence Constraints
1 Scope YES —
2 Normative references YES —
3 Terms, definitions, symbols, abbreviated YES —
terms and conventions
4 Common concepts Partial Differences are indicated in
IEC 61158-5-2, 6.1
Selection and restrictions are
5 Data type ASE Partial
specified in IEC 61158-5-2, 6.1
6 Communication model specification — —
6.1 Concepts YES —
6.2 ASEs — —
6.2.1 Object management ASE — —
6.2.1.1 Overview YES —
6.2.1.2 FAL management model class specification — —
6.2.1.2.1 General formal model YES —
6.2.1.2.2 Identity formal model YES Required
6.2.1.2.3 Assembly formal model YES —
6.2.1.2.4 Message Router formal model YES Required
6.2.1.2.5 Acknowledge Handler formal model YES —
6.2.1.2.6 Time Sync formal model YES Optional. See 4.2.3.1.2
6.2.1.2.7 Parameter formal model YES —
6.2.1.3 FAL management model ASE service YES —
specification
6.2.2 Connection manager ASE YES Single class in this ASE
Required (every device shall
implement instance 1)
6.2.3 Connection ASE YES Optional (internal or external)
6.3 ARs YES —
6.4 Summary of FAL classes YES —
6.5 Permitted FAL services by AR type YES —

IEC 61784-1-2:2023 © IEC 2023 – 15 –
4.2.3.1.2 Time Sync ASE
The Clock identity identifiers (subattribute ClockIdentity) are based on the Vendor Id and Serial
Number.
CP 2/1 uses the Transport of PTP as specified in IEC 61588:2021, Annex G.
4.2.3.2 AL protocol selection
4.2.3.2.1 General
Table 7 specifies the AL protocol selection within IEC 61158-6-2.
Table 7 – CP 2/1: AL protocol selection
Clause Header Presence Constraints
1 Scope YES —
2 Normative references YES —
3 Terms, definitions, symbols, abbreviated YES —
terms and conventions
4 Abstract syntax — —
4.1 FAL PDU abstract syntax — —
4.1.1 General YES —
4.1.2 PDU structure YES —
4.1.3 UCMM_PDUs YES —
4.1.4 Transport_Headers YES —
4.1.5 CM_PDUs YES —
4.1.6 CM PDU components YES See 4.2.3.2.2 and 4.2.3.2.3
4.1.7 MR headers YES —
4.1.8 OM_Service_PDU YES See 4.2.3.2.4
4.1.9 Message and connection paths YES See 4.2.3.2.5
4.1.10 Class, attribute and service codes YES —
4.1.11 Error codes YES See 4.2.3.2.6
4.2 Data abstract syntax specification YES —
4.3 Encapsulation abstract syntax NO —
5 Transfer syntax YES —
6 Structure of FAL protocol state machines YES —
7 AP-Context state machine YES —
8 FAL service protocol machine (FSPM) YES —
9 Application relationship protocol machines YES —
(ARPMs)
10 DLL mapping protocol machine 1 (DMPM 1) YES —
11 DLL mapping protocol machine 2 (DMPM 2) NO —
12 DLL mapping protocol machine 3 (DMPM 3) NO —

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