EN 61784-2:2008

SLOVENSKI STANDARD
01-september-2008
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Industrial communication networks - Profiles -- Part 2: Additional fieldbus profiles for real-
time networks based on ISO/IEC 8802-3
Industrielle Kommunikationsnetze - Profile - Teil 2: Zusätzliche Feldbusprofile für
Echtzeitnetzwerke basierend auf ISO/IEC 8802-3
Réseaux de communication industriels - Profils - Partie 2: Profils supplémentaires des
bus de terrain pour les réseaux temps réel basés sur l’ISO/CEI 8802-3
Ta slovenski standard je istoveten z: EN 61784-2:2008
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.05 9HþVORMQHXSRUDEQLãNH Multilayer applications
UHãLWYH
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61784-2
NORME EUROPÉENNE
June 2008
EUROPÄISCHE NORM
ICS 35.240.50; 35.100.20
English version
Industrial communication networks -
Profiles -
Part 2: Additional fieldbus profiles for real-time networks
based on ISO/IEC 8802-3
(IEC 61784-2:2007)
Réseaux de communication industriels -  Industrielle Kommunikationsnetze -
Profils - Profile -
Partie 2: Profils supplémentaires Teil 2: Zusätzliche Feldbusprofile
des bus de terrain für Echtzeitnetzwerke basierend
pour les réseaux temps réel auf ISO/IEC 8802-3
basés sur l’ISO/CEI 8802-3 (IEC 61784-2:2007)
(CEI 61784-2:2007)
This European Standard was approved by CENELEC on 2008-05-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61784-2:2008 E
Foreword
The text of document 65C/469/FDIS, future edition 1 of IEC 61784-2, 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 was approved by CENELEC as EN 61784-2 on 2008-05-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2009-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-05-01
NOTE Use of some of the associated protocol Types in the EN 61158 family 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 the EN 61784 series. Use of the various protocol Types in other combinations may require permission from
their respective intellectual property right holders.
The International Electrotechnical Commission (IEC) and CENELEC draw attention to the fact that it is
claimed that compliance with this document may involve the use of patents.
The IEC and CENELEC take no position concerning the evidence, validity and scope of these patent
rights.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61784-2:2007 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 61784-2:2008
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 61158 Series Industrial communication networks - EN 61158 Series
Fieldbus specifications
IEC 61588 2004 Precision clock synchronization protocol for - -
networked measurement and control systems

1) 2)
IEC 61784-1 - Industrial communication networks - EN 61784-1 2008
Profiles -
Part 1: Fieldbus profiles
1) 2)
IEC 61784-5-2 - Industrial communication networks - EN 61784-5-2 2008
Profiles -
Part 5-2: Installation of fieldbuses - Installation
profiles for CPF 2
1) 2)
IEC 61784-5-3 - Industrial communication networks - EN 61784-5-3 2008
Profiles -
Part 5-3: Installation of fieldbuses - Installation
profiles for CPF 3
1) 2)
IEC 61784-5-6 - Industrial communication networks - EN 61784-5-6 2008
Profiles -
Part 5-6: Installation of fieldbuses - Installation
profiles for CPF 6
1) 2)
IEC 61918 (mod) - Industrial communication networks - EN 61918 2008
Installation of communication networks in
industrial premises
1)
ISO/IEC 8802-2 - Information technology - Telecommunications - -
and information exchange between systems -
Local and metropolitan area networks -
Specific requirements -
Part 2: Logical link control
ISO/IEC 8802-3 2000 Information technology - Telecommunications - -
and information exchange between systems -
Local and metropolitan area networks -
Specific requirements -
Part 3: Carrier sense multiple access with
collision detection (CSMA/CD) access method
and physical layer specifications

1)
Undated reference.
2)
Valid edition at date of issue.

Publication Year Title EN/HD Year

1)
ISO/IEC 8802-11 - Information technology - Telecommunications - -
and information exchange between systems -
Local and metropolitan area networks -
Specific requirements -
Part 11: Wireless LAN Medium Access
Control (MAC) and Physical Layer (PHY)
specifications
1)
ISO 15745-3 - Industrial automation systems - -
and integration - Open systems application
integration framework -
Part 3: Reference description for IEC 61158
based control systems
ISO 15745-4 2003 Industrial automation systems - -
+ A1 2006 and integration - Open systems application
integration framework -
Part 4: Reference description for Ethernet-
based control systems
1)
IEEE 802.1AB - IEEE Standard for Local and metropolitan - -
area networks Station and Media Access
Control Connectivity Discovery

1)
IEEE 802.1D - IEEE Standard for Local and Metropoitan - -
Area Networks - Media Access Control (MAC)
Bridges
1)
IEEE 802.1Q - IEEE Standard for Local and Metropolitan - -
Area Networks - Virtual Bridged Local Area
Networks
IEEE 802.3 2002 IEEE Standard for Information technology - - -
Telecommunications and information
exchange between systems - Local and
metropolitan area networks - Specific
requirements -
Part 3: Carrier Sense Multiple Access with
Collision Detection (CSMA/CD) - Acess
Method and Physical Layer Specifications

1)
IEEE Std 802.3ab - Information technology - Telecommunications - -
and information exchange between systems -
Local and metropolitan area networks -
Specific requirements - Supplement to Carrier
Sense Multiple Access with Collision
Detection (CSMA/CD) access method and
physical layer specifications - Physical layer
parameters and specifications for 1000 Mb/s
operation over 4-pair of category 5 balanced
copper cabling, type 1000BASE-T

1)
IEEE Std 802.11g - IEEE Standard for Information technology - - -
Telecommunications and information
exchange between systems - Local and
metropolitan area networks - Specific
requirements -
Part 11: Wireless LAN Medium Access
Control (MAC) and Physical Layer (PHY)
specifications – Amendment 4: Further higher
date rate extension in the 2,4 GHz band

- 5 - EN 61784-2:2008
Publication Year Title EN/HD Year

1)
IEEE Std 802.11h - IEEE Standard for Information technology - - -
Telecommunications and information
exchange between systems - Local and
metropolitan area networks - Specific
requirements -
Part 11: Wireless LAN Medium Access
Control (MAC) and Physical Layer (PHY)
specifications – Amendment 5: Spectrum and
transmit power management extensions in the
5 GHz band in Europe
1)
IEEE Std 802.11e - IEEE Standard for Information technology - - -
Telecommunications and information
exchange between systems - Local and
metropolitan area networks - Specific
requirements -
Part 11: Wireless LAN Medium Access
Control (MAC) and Physical Layer (PHY)
specifications – Amendment 8: Medium
Access Control (MAC) quality of service
enhancements
1)
IEEE Std 802.11i - IEEE Standard for Information technology - - -
Telecommunications and information
exchange between systems - Local and
metropolitan area networks - Specific
requirements -
Part 11: Wireless LAN Medium Access
Control (MAC) and Physical Layer (PHY)
specifications – Amendment 6: Medium
Access Control (MAC) security enhancements

1)
IEEE Std 802.15.1 - IEEE Standard for Information technology - - -
Telecommunications and information
exchange between systems - Local and
metropolitan area networks - Specific
requirements -
Part 15.1: Wireless medium access control
(MAC) and physical layer (PHY) specifications
for wireless personal area networks (WPANs)

1)
IETF RFC 768 - User Datagram Protocol - -

1)
IETF RFC 791 - Internet Protocol - -

1)
IETF RFC 792 - Internet Control Message Protocol - -

1)
IETF RFC 793 - Transmission Control Protocol - DARPA - -
Internet Program Protocol Specification

1)
IETF RFC 826 - Ethernet Address Resolution Protocol - -

1)
IETF RFC 894 - Standard for the Transmission of IP - -
Datagrams over Ethernet Networks

1)
IETF RFC 1112 - Host Extensions for IP Multicasting - -

1)
IETF RFC 1122 - Requirements for Internet Hosts - - -
Communication Layers
1)
IETF RFC 1123 - Requirements for Internet Hosts - Application - -
and Support
1)
IETF RFC 1127 - A Perspective on the Host Requirements - -
RFCs
Publication Year Title EN/HD Year

1)
IETF RFC 1213 - Management Information Base for Network - -
Management of TCP/IP-based Internets:
MIB-II
1)
IETF RFC 1305 - Network Time Protocol, Version 3 - - -
Specification and Implementation

1)
IETF RFC 2131 - Dynamic Host Configuration Protocol - -

1)
IETF RFC 2236 - Internet Group Management Protocol - -

1)
IETF RFC 2328 - OSPF Version 2 - -

1)
IETF RFC 2544 - Benchmarking Methodology for Network - -
Interconnect Devices
1)
IETF RFC 2988 - Computing TCP's Retransmission Timer - -

1)
The Open Group - CAE Specification DCE11: - -
C706 Remote Procedure Call
IEC 61784-2
Edition 1.0 2007-12
INTERNATIONAL
STANDARD
Industrial communication networks – Profiles –
Part 2: Additional fieldbus profiles for real-time networks based
on ISO/IEC 8802-3
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XJ
ICS 35.240.50; 35.100.20 ISBN 2-8318-9384-4

– 2 – 61784-2 © IEC:2007(E)
CONTENTS
FOREWORD.11
INTRODUCTION.13
1 Scope.14
2 Normative references .14
3 Terms, definitions, abbreviated terms, acronyms, and conventions.17
3.1 Terms and definitions .17
3.2 Abbreviated terms and acronyms .20
3.3 Symbols .22
3.3.1 CPF 2 symbols .22
3.3.2 CPF 3 symbols .23
3.3.3 CPF 4 symbols .24
3.3.4 CPF 6 symbols .24
3.3.5 CPF 10 symbols .25
3.3.6 CPF 11 symbols .26
3.3.7 CPF 12 symbols .27
3.3.8 CPF 13 symbols .27
3.3.9 CPF 14 symbols .28
3.3.10 CPF 15 symbols .29
3.3.11 CPF 16 symbols .29
3.4 Conventions .30
3.4.1 Conventions common to all layers .30
3.4.2 Physical Layer.31
3.4.3 Data Link Layer .31
3.4.4 Application Layer.32
4 Conformance to communication profiles .32
5 RTE performance indicators .33
5.1 Basic principles of performance indicators.33
5.2 Application requirements .34
5.3 Performance indicators.34
5.3.1 Delivery time .34
5.3.2 Number of RTE end-stations.35
5.3.3 Basic network topology.35
5.3.4 Number of switches between RTE end-stations .35
5.3.5 Throughput RTE .35
5.3.6 Non-RTE bandwidth .35
5.3.7 Time synchronization accuracy.35
5.3.8 Non-time-based synchronization accuracy.36
5.3.9 Redundancy recovery time .36
6 Conformance tests .36
6.1 Concept .36
6.2 Methodology.37
6.3 Test conditions and test cases .37
6.4 Test procedure and measuring .38
6.5 Test report .38
7 Communication Profile Family 2 (CIP™) - RTE communication profiles .39
7.1 General overview .39

61784-2 © IEC:2007(E) – 3 –
7.2 Profile 2/2 .39
7.2.1 Physical Layer.39
7.2.2 Data Link Layer .39
7.2.3 Application Layer.39
7.2.4 Performance indicator selection.39
7.3 Profile 2/2.1.43
7.3.1 Physical Layer.43
7.3.2 Data Link Layer .44
7.3.3 Application Layer.45
7.3.4 Performance indicator selection.46
8 Communication Profile Family 3 (PROFIBUS & PROFINET) – RTE communication
profiles .49
8.1 General overview .49
8.1.1 CPF 3 overview .49
8.1.2 Node Classes .49
8.1.3 Application classes.51
8.1.4 Communication classes .51
8.1.5 Redundancy classes.51
8.1.6 Media classes.52
8.1.7 Conformance class behaviors.52
8.2 Profile 3/4 .55
8.2.1 Physical layer .55
8.2.2 Data link layer .55
8.2.3 Application layer.56
8.2.4 Performance indicator selection.61
8.3 Profile 3/5 .68
8.3.1 Physical layer .68
8.3.2 Data link layer .68
8.3.3 Application layer.69
8.3.4 Performance indicator selection.73
8.4 Profile 3/6 .75
8.4.1 Physical layer .75
8.4.2 Data link layer .75
8.4.3 Application layer.76
8.4.4 Performance indicator selection.81
9 Communication Profile Family 4 (P-NET) - RTE communication profiles .83
9.1 General overview .83
9.2 Profile 4/3, P-NET on IP .83
9.2.1 Physical Layer.83
9.2.2 Data Link Layer .83
9.2.3 Application Layer.84
9.2.4 Performance indicator selection.85
10 Communication Profile Family 6 (INTERBUS®) - RTE communication profiles.89
10.1 General overview .89
10.2 Profile 6/4 .90
10.2.1 Mapping .90
10.2.2 Type 10 service and protocol selection .91
10.2.3 Type 8 service and protocol selection.92
10.2.4 Performance indicator selection.92

– 4 – 61784-2 © IEC:2007(E)
10.3 Profile 6/5 .93
10.3.1 Mapping .93
10.3.2 Type 10 service and protocol selection .93
10.3.3 Type 8 service and protocol selection.93
10.3.4 Performance indicator selection.94
10.4 Profile 6/6 .94
10.4.1 Mapping .94
10.4.2 Type 10 service and protocol selection .94
10.4.3 Type 8 service and protocol selection.95
10.4.4 Performance indicator selection.95
11 Communication Profile Family 10 (Vnet/IP) - RTE communication profiles .96
11.1 General overview .96
11.2 Profile 10/1.97
11.2.1 Physical Layer.97
11.2.2 Data Link Layer .97
11.2.3 Application Layer.99
11.2.4 Performance indicator selection.100
12 Communication Profile Family 11 (TCnet) - RTE communication profiles . 106
12.1 General overview .106
12.2 Profile 11/1.106
12.2.1 Physical Layer.106
12.2.2 Data Link Layer .106
12.2.3 Application Layer.107
12.2.4 Performance indicator selection.108
13 Communication Profile Family 12 (EtherCAT) - RTE communication profiles . 114
13.1 General overview .114
13.2 Profile CP 12/1.114
13.2.1 Physical Layer.114
13.2.2 Data Link Layer .115
13.2.3 Application Layer.119
13.2.4 Performance indicator selection.121
13.3 Profile CP 12/2.124
13.3.1 Physical Layer.124
13.3.2 Data Link Layer .124
13.3.3 Application Layer.128
13.3.4 Performance indicator selection.130
14 Communication Profile Family 13 (ETHERNET Powerlink) - RTE communication
profiles .133
14.1 General overview .133
14.2 Profile 13/1.133
14.2.1 Physical Layer.133
14.2.2 Data Link Layer .133
14.2.3 Application Layer.134
14.2.4 Performance indicator selection.134
15 Communication Profile Family 14 (EPA)- RTE communication profiles. 140
15.1 General overview .140
15.2 CPF 14 (EPA) communication concept .140
15.2.1 General .140

61784-2 © IEC:2007(E) – 5 –
15.2.2 Network Topology.140
15.2.3 EPA devices .141
15.3 Profile 14/1.142
15.3.1 Physical Layer.142
15.3.2 Data Link Layer .142
15.3.3 Network Layer .142
15.3.4 Transport Layer .142
15.3.5 Application Layer.142
15.3.6 Performance indicator selection.144
15.4 Profile 14/2.147
15.4.1 Physical Layer.147
15.4.2 Data Link Layer .147
15.4.3 Network Layer .147
15.4.4 Transport Layer .148
15.4.5 Application Layer.148
15.4.6 Performance indicator selection.149
16 Communication Profile Family 15 (MODBUS-RTPS)- RTE communication profiles . 153
16.1 General overview .153
16.2 Profile 15/1.153
16.2.1 Physical layer .153
16.2.2 Data link layer .153
16.2.3 Application layer.153
16.2.4 Performance indicator selection.154
16.3 Profile 15/2.158
16.3.1 Physical layer .158
16.3.2 Data link layer .158
16.3.3 Application layer.158
16.3.4 Performance indicator selection.159
17 Communication Profile Family 16 (SERCOS)- RTE communication profiles . 164
17.1 General overview .164
17.2 Profile 16/3 (SERCOS III).164
17.2.1 Physical Layer.164
17.2.2 Data Link Layer .164
17.2.3 Application Layer.165
17.2.4 Performance indicator selection.165
Annex A (informative) Performance Indicator calculation . 172
A.1 CPF 2 (CIP) - Performance indicator calculation. 172
A.1.1 Profile 2/2 EtherNet/IP.172
A.1.2 Profile 2/2.1 EtherNet/IP with Time Synchronization . 173
A.2 Communication Profile Family 3 - Performance indicator calculation. 174
A.2.1 Application Scenario.174
A.2.2 Structural examples used for calculation.174
A.2.3 Principles used for calculation .179
A.3 CPF 4/3 P-NET on IP - Performance indicator calculation.182
A.3.1 Application scenario .182
A.3.2 Delivery time calculation.182
A.3.3 Non-RTE throughput calculation .183
A.3.4 Non time-base synchronization accuracy .185

– 6 – 61784-2 © IEC:2007(E)
A.3.5 RTE throughput calculation.186
A.3.6 CPF 4/3, Derivation of delivery time formula .186
A.3.7 CPF 4/3, Ethernet characteristics . 188

Bibliography.189

Figure 1 — Example of graphical representation of consistent indicators 34
Figure 2 — Conformance test overview.36
Figure 3 — Example of network topology using CP 3/4, CP 3/5, and CP 3/6
components .55
Figure 4 — Example of network topology with wireless segment .58
Figure 5 — Calculation basis for delivery time and throughput RTE .64
Figure 6 — Linking-device communication profiles RTE-network context .89
Figure 7 — Linking-device mapping principle .90
Figure 8 — Data Mapping .91
Figure 9 – Throughput RTE and non-RTE bandwidth .111
Figure 10－ EPA system network topology example. 141
Figure A.1 — CP 3/4: Example of line structure . 174
Figure A.2 — CP 3/4: Example of ring structure .174
Figure A.3 — CP 3/4: Example of a wireless segment. 175
Figure A.4 — CP 3/4: Example of an integrated wireless client . 175
Figure A.5 — CP 3/5: Example of line structure . 176
Figure A.6 — CP 3/5: Example of ring structure .176
Figure A.7 — CP 3/6: Example of line structure . 177
Figure A.8 — CP 3/6: Example of ring structure .178
Figure A.9 — CP 3/6: Example of tree structure.179
Figure A.10 — Definition of bridge delay.180
Figure A.11 — Example of a switch structure.181
Figure A.12 — Application Configuration.182
Figure A.13 — Non-RTE throughput calculation .184
Figure A.14 — Non time-base synchronization accuracy. 185

Table 1 — Layout of profile (sub)clause selection tables.30
Table 2 — Contents of (sub)clause selection tables.30
Table 3 — Layout of service selection tables .30
Table 4 — Contents of service selection tables.31
Table 5 — Layout of parameter selection tables.31
Table 6 — Contents of parameter selection tables .31
Table 7 — Layout of class attribute selection tables.32
Table 8 — Contents of class attribute selection tables .32
Table 9 — Basic network topology types.35
Table 10 — CP 2/2: performance indicator overview .40
Table 11 — CP 2/2: Performance indicator dependency matrix .40

61784-2 © IEC:2007(E) – 7 –
Table 12 — CP 2/2: consistent set of performance indicators for factory automation.43
Table 13 — CP 2/2.1: DLL protocol selection.44
Table 14 — CP 2/2.1: DLL protocol selection of management objects.44
Table 15 — CP 2/2.1: AL service selection .45
Table 16 — CP 2/2.1: AL protocol selection .46
Table 17 — CP 2/2.1: performance indicator overview .47
Table 18 — CP 2/2.1: performance indicator dependency matrix .47
Table 19 — CP 2/2.1: Consistent set of performance indicators for motion control.48
Table 20 — Timeout values for name resolution .50
Table 21 — Reaction time for an IO device .50
Table 22 — Redundancy class applicable in conformance classes.52
Table 23 — Conformance class behaviors .52
Table 24 — Conformance class behaviors for network components .54
Table 25 — CP 3/4: AL service selection for an IO device.56
Table 26 — CP 3/4: AL protocol selection for an IO device and Network component.59
Table 27 — CP 3/4: AL protocol selection for an IO controller.60
Table 28 — CP 3/4, CP 3/5 and CP 3/6: performance indicator overview .61
Table 29 — CP 3/4, CP 3/5 and CP 3/6: performance indicator dependency matrix .62
Table 30 — Manager parameters .65
Table 31 — Client parameters .66
Table 32 — Client parameters .66
Table 33 — CP 3/4: Consistent set of PI for MinDeviceInterval=128ms .67
Table 34 — CP 3/4: Assumed values for consistent set of PI calculation.68
Table 35 — CP 3/5: AL service selection for an IO device.69
Table 36 — CP 3/5: AL protocol selection for an IO device and Network component.71
Table 37 — CP 3/5: AL protocol selection for an IO controller.72
Table 38 — CP 3/5: Consistent set of PI for MinDeviceInterval=128ms .74
Table 39 — CP 3/5: Assumed values for consistent set of PI calculation.75
Table 40 — CP 3/6: AL service selection for an IO device.76
Table 41 — Buffering capacity .77
Table 42 — CP 3/6: AL protocol selection for an IO device and network component .78
Table 43 — CP 3/6: AL protocol selection for an IO controller.80
Table 44 — CP 3/6: Consistent set of PI for MinDeviceInterval=1ms.81
Table 45 — CP 3/6: Assumed values for consistent set of PI calculation.82
Table 46 — CP 4/3: DLL service selection .84
Table 47 — CP 4/3: DLL protocol selection.84
Table 48 — CP 4/3: AL service selection .84
Table 49 — CP 4/3: AL protocol selection.85
Table 50 — CP 4/3: Performance indicator overview.
...