EN 61158-4-2:2012

SLOVENSKI STANDARD
01-julij-2012
1DGRPHãþD
SIST EN 61158-4-2:2008
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 4-2. del:
Specifikacija protokola na nivoju podatkovnih povezav (IEC 61158-4-2:2010)
Industrial communication networks - Fieldbus specifications - Part 4-2: Data-link layer
protocol specification (IEC 61158-4-2:2010)
Industrielle Kommunikationsnetze - Feldbusse - Teil 4-2: Protokollspezifikation des Data
Link Layer (Sicherungsschicht) (IEC 61158-4-2:2010)
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 4-2:
Spécification des protocoles des couches de liaison de données - Eléments de type 2
(CEI 61158-4-2:2010)
Ta slovenski standard je istoveten z: EN 61158-4-2:2012
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.20 Podatkovni povezovalni sloj Data link layer
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61158-4-2
NORME EUROPÉENNE
May 2012
EUROPÄISCHE NORM
ICS 25.040.40; 35.100.20; 35.110 Supersedes EN 61158-4-2:2008

English version
Industrial communication networks -
Fieldbus specifications -
Part 4-2: Data-link layer protocol specification -
Type 2 elements
(IEC 61158-4-2:2010)
Réseaux de communication industriels -  Industrielle Kommunikationsnetze -
Spécifications de bus de terrain - Feldbusse -
Partie 4-2: Spécification du protocole de Teil 4-2: Protokollspezifikation des Data
couche de liaison de données - Link Layer (Sicherungsschicht) -
Eléments de Type 2 Typ 2-Elemente
(CEI 61158-4-2:2010) (IEC 61158-4-2:2010)

This European Standard was approved by CENELEC on 2012-03-28. 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland, Turkey and the United Kingdom.

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

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61158-4-2:2012 E
Foreword
The text of document 65C/605/FDIS, future edition 2 of IEC 61158-4-2, 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 61158-4-2:2012.

The following dates are fixed:
(dop) 2012-12-28
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2015-03-28

standards conflicting with the
document have to be withdrawn
This document supersedes EN 61158-4-2:2008.
2:2008:
— Clause 2 and Bibliography: update of normative and bibliographic references;
— 3.5: update of abbreviations;
— 7.6: updates of the Ethernet Link object;
— 7.7: minor update of the Devicenet object (additional attribute);
— new 7.9 and 7.10: new DLR and QoS objects;
— new Clause 10: new DLR protocol.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
Endorsement notice
The text of the International Standard IEC 61158-4-2:2010 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 standards indicated:
IEC/TR 61158-1:2010 NOTE  Harmonized as CLC/TR 61158-1:2010 (not modified).
IEC 61158-2:2010 NOTE  Harmonized as EN 61158-2:2010 (not modified).

- 3 - EN 61158-4-2:2012
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. 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 61131-3 - Programmable controllers - EN 61131-3 -
Part 3: Programming languages
IEC 61158-3-2 2007 Industrial communication networks - Fieldbus EN 61158-3-2 2008
specifications -
Part 3-2: Data-link layer service definition -
Type 2 elements
IEC 61158-5-2 2010 Industrial communication networks - Fieldbus EN 61158-5-2 2012
specifications -
Part 5-2: Application layer service definition -
Type 2 elements
IEC 61158-6-2 2010 Industrial communication networks - Fieldbus EN 61158-6-2 2012
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 61784-3-2 - Industrial communication networks - Profiles - EN 61784-3-2 -
Part 3-2: Functional safety fieldbuses -
Additional specifications for CPF 2

IEC 62026-3 2008 Low-voltage switchgear and controlgear - EN 62026-3 2009
Controller-device interfaces (CDIs) -
Part 3: DeviceNet
ISO/IEC 3309 - Information technology - Telecommunications - -
and information exchange between systems -
High-level data link control (HDLC)
procedures - Frame structure
ISO/IEC 7498-1 - Information technology - Open Systems - -
Interconnection - Basic Reference Model:
The Basic Model
ISO/IEC 7498-3 - Information technology - Open Systems - -
Interconnection - Basic Reference Model:
Naming and addressing
ISO/IEC 8802-3 - 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

Publication Year Title EN/HD Year

ISO 11898 1993 Road vehicles - Interchange of digital - -
information - Controller area network (CAN)
for high-speed communication
IETF RFC 1643 - Definitions of Managed Objects for the - -
Ethernet-like interface types
IETF RFC 1213 - Management Information Base for Network - -
Management of TCP/IP-based Internets:
MIB-II
IEEE 802.1D - IEEE Standard for Local and Metropolitan - -
Area Networks - Media Access Control (MAC)
Bridges
IEEE 802.1Q - IEEE Standard for Local and Metropolitan - -
Area Networks - Virtual Bridged Local Area
Networks
IEC 61158-4-2 ®
Edition 2.0 2010-08
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Fieldbus specifications –
Part 4-2: Data-link layer protocol specification – Type 2 elements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XL
ICS 25.04.40; 35.100.20; 35.110 ISBN 978-2-88912-084-0
– 2 – 61158-4-2 © IEC:2010(E)
CONTENTS
FOREWORD.9
INTRODUCTION.11
1 Scope.13
1.1 General .13
1.2 Specifications.13
1.3 Procedures.13
1.4 Applicability.14
1.5 Conformance.14
2 Normative references .14
3 Terms, definitions, symbols and abbreviations.15
3.1 Reference model terms and definitions.15
3.2 Service convention terms and definitions.17
3.3 Common terms and definitions .18
3.4 Additional Type 2 definitions.20
3.5 Type 2 symbols and abbreviations.27
4 Overview of the data-link protocol.28
4.1 General .28
4.2 Services provided by the DL.30
4.3 Structure and definition of DL-addresses.31
4.4 Services assumed from the PhL .33
4.5 Functional classes.36
5 General structure and encoding of PhIDUs and DLPDUs and related elements of
procedure.36
5.1 Overview .36
5.2 Media access procedure.36
5.3 DLPDU structure and encoding .40
5.4 Lpacket components .44
5.5 DLPDU procedures .46
5.6 Summary of DLL support services and objects .47
6 Specific DLPDU structure, encoding and procedures .49
6.1 Modeling language .49
6.2 DLS user services .51
6.3 Generic tag Lpacket .57
6.4 Moderator Lpacket .58
6.5 Time distribution Lpacket .59
6.6 UCMM Lpacket.61
6.7 Keeper UCMM Lpacket.62
6.8 TUI Lpacket.62
6.9 Link parameters Lpacket and tMinus Lpacket .63
6.10 I’m-alive Lpacket .65
6.11 Ping Lpackets.66
6.12 WAMI Lpacket .68
6.13 Debug Lpacket .68
6.14 IP Lpacket .69
6.15 Ethernet Lpacket .69
7 Objects for station management .69

61158-4-2 © IEC:2010(E) – 3 –
7.1 General .69
7.2 ControlNet object .70
7.3 Keeper object.80
7.4 Scheduling object.102
7.5 TCP/IP Interface object .113
7.6 Ethernet link object.122
7.7 DeviceNet object .130
7.8 Connection configuration object (CCO).139
7.9 DLR object .160
7.10 QoS object .169
8 Other DLE elements of procedure. 171
8.1 Network attachment monitor (NAM) .171
8.2 Calculating link parameters .178
9 Detailed specification of DL components .186
9.1 General .186
9.2 Access control machine (ACM).186
9.3 TxLLC .203
9.4 RxLLC .207
9.5 Transmit machine (TxM).210
9.6 Receive machine (RxM) .213
9.7 Serializer.219
9.8 Deserializer .220
9.9 DLL management .221
10 Device Level Ring (DLR) protocol.223
10.1 General .223
10.2 Supported topologies .223
10.3 Overview of DLR operation.225
10.4 Classes of DLR implementation.227
10.5 DLR behavior .228
10.6 Implementation requirements .233
10.7 Using non-DLR nodes in the ring network.235
10.8 DLR messages .238
10.9 State diagrams and state-event-action matrices . 243
10.10 Performance analysis .264
Annex A (normative) Indicators and switches.268
Bibliography.281
Figure 1 – Relationships of DLSAPs, DLSAP-addresses and group DL-addresses .19
Figure 2 – Data-link layer internal architecture.29
Figure 3 – Basic structure of a MAC ID address.31
Figure 4 – Basic structure of a generic tag address .32
Figure 5 – Basic structure of a fixed tag address .32
Figure 6 – M_symbols and Manchester encoding at 5 MHz .34
Figure 7 – NUT structure .37
Figure 8 – Media access during scheduled time.38
Figure 9 – Media access during unscheduled time .39
Figure 10 – DLPDU format.40

– 4 – 61158-4-2 © IEC:2010(E)
Figure 11 – Aborting a DLPDU during transmission .43
Figure 12 – Lpacket format .44
Figure 13 – Generic tag Lpacket format .45
Figure 14 – Fixed tag Lpacket format.46
Figure 15 – Goodness parameter of TimeDist_Lpacket .60
Figure 16 – Example I’m alive processing algorithm.66
Figure 17 – Keeper CRC algorithm .87
Figure 18 – Keeper object power-up state diagram .98
Figure 19 – Keeper object operating state diagram .99
Figure 20 – Synchronized network change processing .102
Figure 21 – State transition diagram for TCP/IP Interface object .122
Figure 22 – Connection configuration object edit flowchart. 160
Figure 23 – NAM state machine .172
Figure 24 – DLR rings connected to switches.224
Figure 25 – Normal operation of a DLR network.225
Figure 26 – Beacon and Announce frames.225
Figure 27 – Link failure .226
Figure 28 – Network reconfiguration after link failure .227
Figure 29 – Neighbor Check process .233
Figure 30 – Unsupported topology – example 1 .237
Figure 31 – Unsupported topology – example 2 .237
Figure 32 – State transition diagram for Beacon frame based non-supervisor ring node.243
Figure 33 – State transition diagram for Announce frame based non-supervisor ring
node .248
Figure 34 – State transition diagram for ring supervisor .251
Figure A.1 – Non redundant network status indicator labeling .272
Figure A.2 – Redundant network status indicator labeling .273
Table 1 – Data-link layer components .29
Table 2 – MAC ID addresses allocation .32
Table 3 – Fixed tag service definitions .33
Table 4 – Data encoding rules .34
Table 5 – M Data symbols .35
Table 6 – Truth table for ph_status_indication.35
Table 7 – FCS length, polynomials and constants .41
Table 8 – DLL support services and objects.48
Table 9 – Elementary data types.51
Table 10 – DLL events.55
Table 11 – Time distribution priority .60
Table 12 – Format of the TUI Lpacket .63
Table 13 – ControlNet object class attributes .71
Table 14 – ControlNet object instance attributes .71
Table 15 – TUI status flag bits .75

61158-4-2 © IEC:2010(E) – 5 –
Table 16 – Channel state bits .76
Table 17 – ControlNet object common services.78
Table 18 – ControlNet object class specific services .79
Table 19 – Keeper object revision history .81
Table 20 – Keeper object class attributes .81
Table 21 – Keeper object instance attributes .82
Table 22 – Keeper operating state definitions .84
Table 23 – Port status flag bit definitions .85
Table 24 – TUI status flag bits .86
Table 25 – Keeper attributes.88
Table 26 – Memory requirements (in octets) for the Keeper attributes.89
Table 27 – Keeper object common services .89
Table 28 – Keeper object class specific services .90
Table 29 – Service error codes .91
Table 30 – Wire order format of the TUI Lpacket.95
Table 31 – Service error codes .96
Table 32 – Keeper object operating states .96
Table 33 – Keeper object state event matrix .100
Table 34 – Scheduling object class attributes .103
Table 35 – Scheduling object instance attributes .104
Table 36 – Scheduling object common services .104
Table 37 – Status error descriptions for Create.105
Table 38 – Status error descriptions for Delete and Kick_Timer .106
Table 39 – Scheduling object class specific services .106
Table 40 – Status error descriptions for Read .108
Table 41 – Status error descriptions for Conditional_Write.109
Table 42 – Status error descriptions for Forced_Write .109
Table 43 – Status error descriptions for Change_Start .110
Table 44 – Status error descriptions for Break_Connections .110
Table 45 – Status error descriptions for Change_Complete. 111
Table 46 – Status error descriptions for Restart_Connections .112
Table 47 – TCP/IP Interface object class attributes.113
Table 48 – TCP/IP Interface object instance attributes.114
Table 49 – Status bits .116
Table 50 – Configuration capability bits .116
Table 51 – Configuration control bits.117
Table 52 – Example path .117
Table 53 – Interface configuration components .118
Table 54 – Alloc control values .119
Table 55 – TCP/IP Interface object common services .120
Table 56 – Get_Attribute_All reply format .120
Table 57 – Ethernet link object revision history .122
Table 58 – Ethernet link object class attributes .123

– 6 – 61158-4-2 © IEC:2010(E)
Table 59 – Ethernet link object instance attributes . 124
Table 60 – Interface flags bits.127
Table 61 – Control bits.128
Table 62 – Interface type .128
Table 63 – Interface state .129
Table 64 – Admin state .129
Table 65 – Ethernet Link object common services.129
Table 66 – Ethernet Link object class specific services .130
Table 67 – DeviceNet object revision history.131
Table 68 – DeviceNet object class attributes.131
Table 69 – DeviceNet object instance attributes.132
Table 70 – Bit rate attribute values .134
Table 71 – BOI attribute values.135
Table 72 – Diagnostic counters bit description .136
Table 73 – DeviceNet object common services .137
Table 74 – Reset service parameter .138
Table 75 – Reset service parameter values .138
Table 76 – DeviceNet object class specific services. 139
Table 77 – Connection configuration object revision history .140
Table 78 – Connection configuration object class attributes . 141
Table 79 – Format number values.142
Table 80 – Connection configuration object instance attributes . 143
Table 81 – Originator connection status values.145
Table 82 – Target connection status values .146
Table 83 – Connection flags .146
Table 84 – I/O mapping formats .148
Table 85 – Connection configuration object common services. 149
Table 86 – Get_Attribute_All error codes .149
Table 87 – Get_Attribute_All response.150
Table 88 – Set_Attribute_All error codes.151
Table 89 – Set_Attribute_All request.152
Table 90 – Create request parameters.153
Table 91 – Create error codes .154
Table 92 – Delete error codes.154
Table 93 – Restore error codes.154
Table 94 – Connection configuration object class specific services . 155
Table 95 – Kick_Timer error codes .155
Table 96 – Open_Connection error codes .156
Table 97 – Close_Connection error codes .156
Table 98 – Stop_Connection error codes .156
Table 99 – Change_Start error codes .157
Table 100 – Get_Status service parameter .157
Table 101 – Get_Status service response.157

61158-4-2 © IEC:2010(E) – 7 –
Table 102 – Get_Status service error codes .158
Table 103 – Change_Complete service parameter .158
Table 104 – Change_Complete service error codes .158
Table 105 – Audit_Changes service parameter .159
Table 106 – Audit_Changes service error codes .159
Table 107 – Class attributes .161
Table 108 –Instance attributes.161
Table 109 – Network Status values.163
Table 110 – Ring Supervisor Status values.164
Table 111 – DLR object common services .167
Table 112 – Get_Attributes_All Response – non supervisor device . 167
Table 113 – Get_Attributes_All Response – supervisor-capable device . 167
Table 114 – DLR object class specific services.168
Table 115 – QoS object revision history.169
Table 116 – QoS object class attributes .169
Table 117 – QoS object instance attributes.170
Table 118 – Default DCSP values and usages .171
Table 119 – Common services.171
Table 120 – NAM states.172
Table 121 – Default link parameters.173
Table 122 – PhL timing characteristics.179
Table 123 – DLR variables.228
Table 124 – MAC addresses for DLR messages .239
Table 125 – IEEE 802.1Q frame format.239
Table 126 – Common fields in DLR messages .239
Table 127 – Format of the Beacon frame .240
Table 128 – Ring State values .240
Table 129 – Format of the Neighbor_Check request .241
Table 130 – Format of the Neighbor_Check response.241
Table 131 – Format of the Link_Status/Neighbor_Status frame. 241
Table 132 – Link/Neighbor status values.242
Table 133 – Format of the Announce frame .242
Table 134 – Format of the Sign_On frame .242
Table 135 – Parameter values for Beacon frame based non-supervisor ring node. 243
Table 136 – State-event-action matrix for Beacon frame based non-supervisor ring
node .244
Table 137 – Parameter values for Announce frame based non-supervisor ring node.248
Table 138 – State-event-action matrix for Announce frame based non-supervisor ring
node .249
Table 139 – Parameter values for ring supervisor node .252
Table 140 – State-event-action matrix for ring supervisor node. 253
Table 141 – Parameters/assumptions for example performance calculations .264
Table 142 – Example ring configuration parameters and performance . 267

– 8 – 61158-4-2 © IEC:2010(E)
Table A.1 – Module status indicator .269
Table A.2 – Network status indicators .270
Table A.3 – Network status indicator.274
Table A.4 – Network status indicator.276
Table A.5 – Combined module/network status indicator .277
Table A.6 – I/O status indicator.278
Table A.7 – Bit rate switch encoding .280

61158-4-2 © IEC:2010(E) – 9 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
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INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –
Part 4-2: Data-link layer protocol specification –
Type 2 elements
FOREWORD
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