IEC 61784-1-6:2023

Industrial networks - Profiles - Part 1-6: Fieldbus profiles - Communication Profile Family 6

IEC 61784-1-6:2023 defines Communication Profile Family 6 (CPF 6). CPF 6 specifies a set of protocol specific communication profiles (CPs) based on the IEC 61158 series (Type 8) and other standards, to be used in the design of devices involved in communications in factory manufacturing and process control.

Réseaux industriels – Profils – Partie 1-6: Profils de bus de terrain – Famille de profils de communication 6

L’IEC 61784-1-6 ED1:2023 (FR) définit la famille de profils de communication 6 (CPF 6). La CPF 6 définit un jeu de profils de communication (CP) spécifiques au protocole, fondé sur la série IEC 61158 (type 8) et d’autres normes, à utiliser pour la conception d’appareils employés en communication dans le cadre de la production industrielle et de la commande de processus.

General Information

• Status: Published
• Publication Date: 20-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: 21-Mar-2023

Relations

• Replaces: IEC 61784-1:2019 - Industrial communication networks - Profiles Part 1: Fieldbus profiles
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61784-1-6
®

Edition 1.0 2023-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Industrial networks – Profiles –
Part 1-6: Fieldbus profiles – Communication Profile Family 6

Réseaux industriels – Profils –
Partie 1-6: Profils de bus de terrain – Famille de profils de communication 6

IEC 61784-1-6:2023-03(en-fr)

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IEC 61784-1-6

®


Edition 1.0 2023-03




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE











Industrial networks – Profiles –

Part 1-6: Fieldbus profiles – Communication Profile Family 6



Réseaux industriels – Profils –

Partie 1-6: Profils de bus de terrain – Famille de profils de communication 6
















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 35.100.20; 35.240.50 ISBN 978-2-8322-6619-9




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

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– 2 – IEC 61784-1-6:2023 © IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, abbreviated terms, symbols, and conventions . 7
3.1 Terms and definitions . 7
3.2 Abbreviations and symbols . 7
3.2.1 Common abbreviations and symbols . 7
3.2.2 Other abbreviations and symbols . 7
3.3 Conventions . 7
4 CPF 6 (INTERBUS®) . 8
4.1 General overview . 8
4.2 CP 6/1 . 9
4.2.1 Physical layer . 9
4.2.2 Data-link layer . 10
4.2.3 Application layer . 12
4.3 CP 6/2 . 13
4.3.1 Physical layer . 13
4.3.2 Data-link layer . 14
4.3.3 Application layer . 15
4.4 CP 6/3 . 16
4.4.1 Physical layer . 16
4.4.2 Data-link layer . 16
4.4.3 Application layer . 17
Annex A (informative) CPF 6 (INTERBUS) communication concepts . 19
Bibliography . 21

Table 1 – CPF 6: device CP identifier assignment . 8
Table 2 – CPF 6: PhL selection . 9
Table 3 – CP 6/1: DLL service selection, assignment of DLL services to device types . 11
Table 4 – CPF 6: DLL protocol selection of data widths supported by master . 12
Table 5 – CP 6/1: AL service selection, assignment of AL services to device types . 13
Table 6 – CP 6/2: DLL service selection, assignment of DLL services to device types . 14
Table 7 – CP 6/2: AL service selection, assignment of AL services to device types . 15
Table 8 – CP 6/2: AL service selection of AR-Data-Send-Acknowledge service
parameters . 16
Table 9 – CP 6/3: DLL service selection, assignment of DLL services to device types . 17
Table 10 – CP 6/3: AL service selection, assignment of AL services to device types . 18

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IEC 61784-1-6:2023 © IEC 2023 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

INDUSTRIAL NETWORKS –
PROFILES –

Part 1-6: Fieldbus profiles –
Communication Profile Family 6

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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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 61784-1-6 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.

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– 4 – IEC 61784-1-6:2023 © IEC 2023
This edition includes the following significant technical changes with respect to
IEC 61784-1:2019:
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.
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.

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IEC 61784-1-6:2023 © IEC 2023 – 5 –
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
1
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).


___________
1
 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.

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– 6 – IEC 61784-1-6:2023 © IEC 2023
INDUSTRIAL NETWORKS –
PROFILES –

Part 1-6: Fieldbus profiles –
Communication Profile Family 6



1 Scope
This part of IEC 61784-1 defines Communication Profile Family 6 (CPF 6). CPF 6 specifies a
set of protocol specific communication profiles (CPs) based on the IEC 61158 series (Type 8)
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 6 are specified in IEC 61784-2-6.
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 61158-3-8:2007, Industrial communication networks – Fieldbus specifications – Part 3-8:
Data-link layer service definition – Type 8 elements
IEC 61158-4-8:2007, Industrial communication networks – Fieldbus specifications – Part 4-8:
Data-link layer protocol specification – Type 8 elements
IEC 61158-5-8:2007, Industrial communication networks – Fieldbus specifications – Part 5-8:
Application layer service definition – Type 8 elements
IEC 61158-6-8:2007, Industrial communication networks – Fieldbus specifications – Part 6-8:
Application layer protocol specification – Type 8 elements
IEC 61784-1-0:2023, Industrial networks – Profiles – Part 1-0: Fieldbus profiles – General
concepts and terminology

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IEC 61784-1-6:2023 © IEC 2023 – 7 –
ISO 15745-3:2003, Industrial automation systems and integration – Open systems application
integration framework – Part 3: Reference description for IEC 61158-based control systems
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 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, symbols, and conventions
3.1 Terms and definitions
For the purposes of this document, all terms and definitions provided 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
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.

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– 8 – IEC 61784-1-6:2023 © IEC 2023
2
4 CPF 6 (INTERBUS® )
4.1 General overview
Communication Profile Family 6 defines communication profiles based on IEC 61158-2 type 8,
IEC 61158-3-8, IEC 61158-4-8, IEC 61158-5-8 and IEC 61158-6-8, which corresponds to parts
of a communication system commonly known as INTERBUS.
– Profile 6/1
This profile contains a selection of AL, DLL and PhL services and protocol definitions with
an IEC 61158 compliant application access.
Profile 6/1 defines a generic standard INTERBUS profile.
– Profile 6/2
This profile contains a selection of AL, DLL and PhL services and protocol definitions with
an IEC 61158 compliant application access plus an additional AL protocol transparent
access path.
Profile 6/2 extends profile 6/1 non cyclic data exchange capabilities. It provides, via AR-
Send-Data-Acknowledge, transparent access to field devices. This allows to fit devices with
other protocol stacks like TCP/IP and applications based on TCP/IP. Which protocol stacks
are using AR-Send-Data-Acknowledge does not impact the profile definition.
– Profile 6/3
This profile contains a selection of AL, DLL and PhL services and protocol definitions with
an IEC 61158 compliant application access with a limited set of AL services.
Profile 6/3 uses a reduced set of services for non cyclic data exchange for the use in device
with limited resources.
NOTE See Annex A for an overview of INTERBUS communications concepts.
Devices (master or slave) which comply with a communication profile can be further classified
by a CP identifier. The CP identifiers are shown in Table 1.
Table 1 – CPF 6: device CP identifier assignment
Profile Master Slave
Bus
coupler
cyclic cyclic and non cyclic cyclic non cyclic cyclic and non cyclic
Profile 6/1 618 619 611 612 613 614
Profile 6/2 — 629 — 622 623 —
Profile 6/3 — 639 — 632 633 —

Each communication profile provides a well defined set of provisions. For a distinct device,
further selections of services, parameter and parameter values have to be made. These
selections should be described according to ISO 15745-3 as INTERBUS device profiles in the
form of an INTERBUS device profile exchange description. An INTERBUS device profile based
on a CP shall specify the CP identifier in the following format:

___________
2 INTERBUS is the trade name of Phoenix Contact GmbH & Co. KG. 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 INTERBUS. Use of the trade name
INTERBUS requires permission of the trade name holder.

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IEC 61784-1-6:2023 © IEC 2023 – 9 –
4.2 CP 6/1
4.2.1 Physical layer
Table 2 specifies the PhL selection within IEC 61158-2.
Table 2 – CPF 6: PhL selection
Clause Header Presence Constraints
1 Scope YES —
2 Normative references Partial Used if needed
3 Terms and definitions — —
3.1 Common terms and definitions Partial Used if needed
3.2 – 3.6 — NO —
3.7 Type 8: Terms and definitions YES —
Next — NO —
subclauses
4 Symbols and abbreviated terms — —
4.1 Symbols — —
4.1.1 – 4.1.5 — NO —
4.1.6 Type 8: Symbols YES —
Next — NO —
subclauses
4.2 Abbreviated terms — —
4.2.1 – 4.2.5 — NO —
4.2.6 Type 8: Additional abbreviations YES —
Next — NO —
subclauses
5 Data-link – Physical Layer interface — —
5.1 General YES —
5.2 – 5.6 — NO —
5.7 Type 8: Required services YES —
Next — NO —
subclauses
6 Station Management – Physical Layer interface — —
6.1 General YES —
6.2 – 6.5 — NO —
6.6 Type 8: Station Management – Physical Layer interface YES —
Next — NO —
subclauses
7 DCE Independent Sublayer (DIS) — —
7.1 General YES —
7.2 – 7.4 — NO —
7.5 Type 8: DIS YES —
Next — NO —
subclauses
8 DTE – DCE interface — —
8.1 General YES —
8.2 – 8.3 — NO —
8.4 Type 8: MIS – MDS Interface YES —

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– 10 – IEC 61784-1-6:2023 © IEC 2023
Clause Header Presence Constraints
Next — NO —
subclauses
9 Medium Dependent Sublayer (MDS) — —
9.1 General YES —
9.2 – 9.7 — NO —
9.8 Type 8: MDS: Wire and optical media YES —
Next — NO —
subclauses
10 MDS – MAU interface — —
10.1 General YES —
10.2 – 10.5 — NO —
10.6 Type 8: MDS – MAU interface: Wire and optical media YES —
Next — —
subclauses
11 – 26 — NO —
27 Type 8: Medium Attachment Unit: twisted-pair wire YES See Note 1
medium
28 Type 8: Medium Attachment Unit: optical media YES See Note 1
Next clauses — NO —
Annex A – L — NO —
Annex M (normative) Type 8: Connector specification YES See Note 2
Next annexes — NO —
NOTE 1 The used MAU is selected at device level.
NOTE 2 The used connector is selected at device level.

4.2.2 Data-link layer
4.2.2.1 DLL service
4.2.2.1.1 DLL service selection
Data-link layer services are defined in IEC 61158-3-8. All clauses are included in
communication profile 6/1 with the constraints specified in 4.2.2.1.2.
4.2.2.1.2 Assignment of DLL services to device types
Table 3 defines the valid combinations of DLL services and their assignment to device types
for profile 6/1.

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IEC 61784-1-6:2023 © IEC 2023 – 11 –
Table 3 – CP 6/1: DLL service selection, assignment
of DLL services to device types
Master Slave
Bus
DLL Services
cyclic and cyclic and
coupler
cyclic cyclic non cyclic
non cyclic non cyclic
CP identifier 618 619 611 612 613 614
DL services
a a
Put Buffer M M — —
O O
b b
Get Buffer M M — —
O O
Buffer received M M M — M —
Normal data transfer — M — M M —
DL-management services
Reset M M M M M M
Set value M M O O O O
Read value M M O O O O
Event M M M M M M
Get current configuration M M — — — —
Get active configuration M M — — — —
Set active configuration M M — — — —
a
A slave shall support Put Buffer if process data should be sent to the master.
b
A slave shall support Get Buffer if process data should be received from the master.

4.2.2.2 DLL protocol
4.2.2.2.1 DLL protocol selection
Data-link layer protocols are defined in IEC 61158-4-8. All clauses are included in
communication profile 6/1 with the constraints specified in 4.2.2.2.2.
NOTE The service primi
...