IEC TR 61158-1:2010
(Main)Industrial communication networks - Fieldbus specifications - Part 1: Overview and guidance for the IEC 61158 and IEC 61784 series
Industrial communication networks - Fieldbus specifications - Part 1: Overview and guidance for the IEC 61158 and IEC 61784 series
IEC 61158-1:2010(E) presents an overview and guidance for the IEC 61158 series by:
- explaining the structure and content of the IEC 61158 series;
- relating the structure of the IEC 61158 series to the ISO/IEC 7498 OSI Basic Reference Model;
- showing the logical structure of the IEC 61784 series;
- showing how to use parts of the IEC 61158 series in combination with the IEC 61784 series;
- providing explanations of some aspects of the IEC 61158 series that are common to the parts of the IEC 61158-5 series.
This third edition cancels and replaces the second edition published in 2007 and constitutes a technical revision. It includes the following significant changes with respect to the previous edition:
- Updates of the references to the IEC 61158 series, IEC 61784-1, IEC 61784-3, IEC 61784-5 series and IEC 61918 throughout the document;
- new Type 21 and the related profile family CPF 17;
- new Type 22 and the related profile family CPF 18.
General Information
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Standards Content (Sample)
IEC/TR 61158-1
®
Edition 3.0 2010-08
TECHNICAL
REPORT
colour
inside
Industrial communication networks – Fieldbus specifications –
Part 1: Overview and guidance for the IEC 61158 and IEC 61784 series
IEC/TR 61158-1:2010(E)
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IEC/TR 61158-1
®
Edition 3.0 2010-08
TECHNICAL
REPORT
colour
inside
Industrial communication networks – Fieldbus specifications –
Part 1: Overview and guidance for the IEC 61158 and IEC 61784 series
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XB
ICS 25.040; 35.100; 35.240.50 ISBN 978-2-88912-137-3
® Registered trademark of the International Electrotechnical Commission
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– 2 – TR 61158-1 © IEC:2010(E)
CONTENTS
FOREWORD.5
1 Scope.7
2 Normative references .7
3 Abbreviations .7
4 Guidelines for implementers and users.7
4.1 Background and purpose.7
4.2 Supported options .8
4.3 Benefits from using a common and formal style.8
5 Concept of the IEC 61158 series .9
6 Mapping onto the OSI Basic Reference Model.10
6.1 Overview .10
6.2 Physical layer service and protocol.11
6.3 Data-link layer service.12
6.4 Data-link layer protocol .13
6.5 Application layer service.13
6.6 Application layer protocol .14
7 Structure of IEC 61158 and IEC 61784 series.15
7.1 The IEC 61158 physical layer .15
7.2 The IEC 61158 data-link layer .15
7.3 The IEC 61158 application layer.16
7.4 IEC 61784-1 and IEC 61784-2 fieldbus profiles .16
7.5 IEC 61784-3 functional safety communication profiles .20
7.6 IEC 61784-5 installation profiles.21
8 Brief summary of the characteristics of each service and protocol for each type of
fieldbus .23
8.1 Summary of the physical layer service and protocol characteristics .23
8.1.1 Type 1: media.23
8.1.2 Type 2: Coaxial wire and optical media.23
8.1.3 Type 3: Twisted-pair wire and optical media .23
8.1.4 Type 4: Wire medium.24
8.1.5 Type 5: Wire and optical media .24
8.1.6 Type 7: Wire and optical media .24
8.1.7 Type 8: Twisted-pair wire and optical media .24
8.1.8 Type 10: Wire and optical media.24
8.1.9 Type 11: Wire and optical media.24
8.1.10 Type 12: Wire and optical media.24
8.1.11 Type 13: Wire and optical media.24
8.1.12 Type 14: Wire and optical media.24
8.1.13 Type 15: Wire and optical media.24
8.1.14 Type 16: Optical media.25
8.1.15 Type 17: Wire and optical media.25
8.1.16 Type 18 media.25
8.1.17 Type 19: Wire and optical media.25
8.2 Summary of data-link layer service characteristics .25
8.3 Summary of data-link layer protocol characteristics .26
8.4 Summary of application layer service characteristics .28
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TR 61158-1 © IEC:2010(E) – 3 –
8.5 Summary of application layer protocol characteristics.29
9 Application layer service description concepts .31
9.1 Overview .31
9.2 Architectural relationships .32
9.2.1 Relationship to the application layer of the OSI Basic Reference
Model .32
9.2.2 Relationships to other fieldbus entities .32
9.3 Fieldbus application layer structure .34
9.3.1 Overview .34
9.3.2 Fundamental concepts.34
9.3.3 Fieldbus application processes.34
9.3.4 Application process objects .38
9.3.5 Application entities .40
9.3.6 Fieldbus application service elements.40
9.3.7 Application relationships.44
9.4 Fieldbus application layer naming and addressing.46
9.4.1 General .46
9.4.2 Identifying objects accessed through the FAL .46
9.4.3 Addressing APs accessed through the FAL .47
9.5 Architecture summary.47
9.6 Notional FAL service procedures .47
9.6.1 Notional FAL confirmed service procedures.47
9.6.2 Notional FAL unconfirmed service procedures .48
9.7 Common FAL attributes.48
9.8 Common FAL service parameters.49
9.9 APDU size.50
10 Data type ASE.50
10.1 Overview .50
10.1.1 General .50
10.1.2 Overview of basic types.51
10.1.3 Overview of fixed-length types.52
10.1.4 Overview of constructed types.52
10.1.5 Specification of user-defined data types .52
10.1.6 Transfer of user data .53
10.2 Formal definition of data type objects .53
10.2.1 Data type class.53
Annex A (informative) Trade name declarations.55
Bibliography.57
Figure 1 – Generic fieldbus network.9
Figure 2 – Concept of DL/AL to separate service and protocol parts .10
Figure 3 – Basic fieldbus reference model .11
Figure 4 – General model of physical layer .12
Figure 5 – Relationship of the IEC 61158-3 and IEC 61158-4 series to other fieldbus
layers and to users of the fieldbus data-link service .13
Figure 6 – Relationship of the IEC 61158-5 and IEC 61158-6 series to other fieldbus
layers and to users of the fieldbus application service.14
Figure 7 – Structure of communication profile families .17
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– 4 – TR 61158-1 © IEC:2010(E)
Figure 8 – Example of a CPF structure .18
Figure 9 – Document structure of IEC 61918 and the IEC 61784-5 series .22
Figure 10 – Relationship to the OSI Basic Reference Model .32
Figure 11 – Architectural positioning of the fieldbus application layer.33
Figure 12 – Client/server interactions.35
Figure 13 – Pull model interactions .36
Figure 14 – Push model interactions .37
Figure 15 – APOs services conveyed by the FAL .38
Figure 16 – Application entity structure .40
Figure 17 – Example FAL ASEs .42
Figure 18 – FAL management of objects .42
Figure 19 – ASE service conveyance.43
Figure 20 – Defined and established AREPs.46
Figure 21 – FAL architectural components .47
Figure 22 – Data-type class hierarchy example.51
Table 1 – OSI and IEC 61158 layers .11
Table 2 – CPF, CP, and type relations .19
Table 3 – Types of timeliness defined for publisher/subscriber interactions.37
Table A.1 – Trade names of CPFs and CPs .55
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TR 61158-1 © IEC:2010(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –
Part 1: Overview and guidance
for the IEC 61158 and IEC 61784 series
FOREWORD
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6) All users should ensure that they have the latest edition of this publication.
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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.
The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
NOTE 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 particular data-link layer protocol Type to be used with physical layer and application layer protocols in Type
combinations as specified explicitly in its profile parts. Use of the various protocol types in other combinations may
require permission of their respective intellectual-property-right holders.
IEC 61158-1, which is a technical report, has been prepared by subcommittee 65C: Industrial
networks, of IEC technical committee 65: Industrial-process measurement, control and
automation.
This third edition cancels and replaces the second edition published in 2007. It constitutes a
technical revision.
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– 6 – TR 61158-1 © IEC:2010(E)
This edition includes the following significant changes with respect to the previous edition:
• Updates of the references to the IEC 61158 series, IEC 61784-1, IEC 61784-3,
IEC 61784-5 series and IEC 61918 throughout the document;
• new Type 21 and the related profile family CPF 17;
• new Type 22 and the related profile family CPF 18.
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
65C/590A/DTR 65C/608/RVC
Full information on the voting for the approval of this technical report can be found in the
report on voting indicated in the above table.
This publication has been drafted in accordance with ISO/IEC Directives, Part 2.
A list of all the parts in the IEC 61158 series, published under the general title Industrial
communication networks – Fieldbus specifications, can be found on the IEC web site.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
NOTE The revision of this technical report will be synchronized with the other parts of the IEC 61158 series.
A bilingual version of this publication may be issued at a later date.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
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TR 61158-1 © IEC:2010(E) – 7 –
INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –
Part 1: Overview and guidance
for the IEC 61158 and IEC 61784 series
1 Scope
This technical report presents an overview and guidance for the IEC 61158 series by:
• explaining the structure and content of the IEC 61158 series;
• relating the structure of the IEC 61158 series to the ISO/IEC 7498 OSI Basic Reference
Model;
• showing the logical structure of the IEC 61784 series;
• showing how to use parts of the IEC 61158 series in combination with the IEC 61784
series;
• providing explanations of some aspects of the IEC 61158 series that are common to the
parts of the IEC 61158-5 series.
2 Normative references
None
3 Abbreviations
For the purposes of this document, the following abbreviations, based partially on the
concepts developed in ISO/IEC 7498-1, apply:
AL Application layer (N = 7)
AR Application relationship
AREP Application relationship endpoint
DL- Data-link layer (as a prefix)
DLL Data-link layer (N = 2)
IETF Internet Engineering Task Force
IP Internet Protocol (see RFC 791)
(n)-layer Layer n of the OSI Basic Reference Model
OSI Open systems interconnection
Ph- Physical layer (as a prefix)
PhL Physical layer (N = 1)
4 Guidelines for implementers and users
4.1 Background and purpose
Communication in global markets requires a global understanding of a specification (standard
or not). ISO/OSI related specifications provide a common basis for understanding and
acceptance between international experts (manufacturers and end-users). Examples are
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– 8 – TR 61158-1 © IEC:2010(E)
• ISO/IEC 7498 series for general layering and structuring;
• ISO/IEC 9545 for general application layer modeling;
• ISO/IEC 8886 for data-link layer modeling.
The IEC 61158 series specifies a number of different fieldbus types in each of the parts of the
series (part 2 and the parts of part 3 through part 6). As a result of the editorial harmonization
work done by IEC, each PhL, DLL and AL specification within IEC 61158 is shown in a
homogeneous way. The description of each layer offers, as far as possible, common views,
concepts, definitions, and descriptive methods.
This common approach has been adopted to assist users and implementers in understanding
the several specifications. It is also intended to assist in comparing available products and
their communications-related features.
4.2 Supported options
Most of the fieldbus types specified in the IEC 61158 series include a range of selectable and
configurable options within their detailed specifications. In general, only certain restricted
combinations of options will interwork or interoperate correctly.
The recommended combinations of options are collected in IEC 61784-1 and IEC 61784-2.
IEC 61784-1 and IEC 61784-2 provide users and implementers with details of supported
fieldbus specifications based on selected options that are intended to work together
consistently and correctly. In most cases, available product demonstrations and working plant
experience support these profiles.
Annex A of IEC 61784-1 and IEC 61784-2 help select the needed fieldbus by showing the key
features of each of the profiled fieldbus protocol families.
As a result, the route map recommended to select a fieldbus is:
• Clause 5 to Clause 8 of this Technical Report
• IEC 61784-1, Annex A: Communication concepts
• IEC 61784-2, Annex A: Performance indicator calculations
• IEC 61784-1 and IEC 61784-2, Communication profile family
• IEC 61158 series as appropriate for the particular fieldbus type of interest.
4.3 Benefits from using a common and formal style
The benefits gained from using a common and formal style to specify the communication
system are:
• the common look and feel of a specification saves effort during evaluation;
• a common structure helps to identify and to specify common parts and contents;
• the common approach represents a first step to ensure long-term quality and stability;
• the missing parts and items of any specification are more readily identified by comparison
with the other specifications, leading to a simplified review and evaluation procedure;
• a common basis facilitates the development of test and certification procedures;
• the modular concepts support future enhancements, extensions and adaptation of new
technologies.
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TR 61158-1 © IEC:2010(E) – 9 –
5 Concept of the IEC 61158 series
Conceptually, a fieldbus is a digital, serial, multidrop, data bus for communication with
industrial control and instrumentation devices such as – but not limited to – transducers,
actuators and controllers.
The IEC 61158 series specifies a number of fieldbus protocol types. Each protocol type is
designed to permit multiple measurement and control devices to communicate on a shared
medium. Devices communicate directly only with other devices of the same protocol type.
NOTE 1 Devices which use the same lower-layer protocols in a compatible fashion but differ in their higher-layer
protocols may be able to share a lower-layer medium.
NOTE 2 In all cases, a particular data-link layer protocol type may be used without restriction when coupled with
physical layer and application layer protocols of the same type or with other combinations as specified in
IEC 61784-1 and IEC 61784-2. Use of the various protocol types in other combinations may require permission
from their respective copyright holders.
These protocol types have been engineered to support information processing, monitoring
and control systems for any industrial sector and related domains. An example application for
high-integrity low-level communication between sensors, actuators and local controllers in a
process plant, together with the interconnection of programmable controllers, is shown in
Figure 1.
Information systems network
Gateway Gateway
Fieldbus
Process plant Factory shop floor
segment
Controllers
Programmable
ControlleProrsgra mmable
Controllers
Programmable
Sensors
Controllers
Actuators
Fieldbus
Monitoring
segment
system
Bridge
Fieldbus
segment
Figure 1 – Generic fieldbus network
A number of fieldbus types are specified in the IEC 61158 series using the following concepts
for decomposition.
a) First concept: The complex communication task is divided into different layers based on
an adaptation of ISO/IEC 7498, the ISO/OSI Basic Reference Model, thereby facilitating
well-structured functions and interfaces (see Clause 6). This has the following benefits:
• decomposition of complex tasks;
• modular structure to adapt different technologies.
b) Second concept: Each fieldbus type is composed of one or more layer specifications.
Most types include a number of services and protocol options that require an appropriate
selection to support a working system. Compatible selections of options and services
within one of the IEC 61158 fieldbus types are specified as standardized communication
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