IEC 61162-3:2008+AMD1:2010 CSV

Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 3: Serial data instrument network

IEC 61162-3:2008+A1:2010 provides information for the application of NMEA 2000 aboard SOLAS vessels. Exceptions, additions and specific requirements for implementation upon SOLAS vessels are contained in the document. The NMEA 2000 standard contains the requirements for the implementation of a serial-data communications network adopting controller area network (CAN) technology.

Matériels et systèmes de navigation et de radiocommunication maritimes - Interfaces numériques - Partie 3: Réseau par liaison de données série d'instruments

L’IEC 61162-3:2008+A1:2010 est basée sur la norme NMEA 2000. La norme NMEA 2000 contient les exigences relatives à la mise en œuvre minimale d’un réseau par liaison de données série de communication pour interconnecter les matériels électroniques maritimes à bord des navires. Les matériels conçus conformément à la présente norme ont la capacité de partager des données, y compris commandes et états, avec d’autres matériels compatibles sur un seul canal de signalisation.

General Information

• Status: Published
• Publication Date: 17-Nov-2010
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.160.01 - Audio, video and audiovisual systems in general
• ICS: 47.020.70 - Navigation and control equipment
• Technical Committee: TC 80 - Maritime navigation and radiocommunication equipment and systems
• Current Stage: PPUB - Publication issued
• Start Date: 18-Nov-2010
• Completion Date: 18-Nov-2010

Standards Content (Sample)

IEC 61162-3
®
Edition 1.1 2010-11
INTERNATIONAL
STANDARD

colour
inside

Maritime navigation and radiocommunication equipment and systems –
Digital interfaces –
Part 3: Serial data instrument network


IEC 61162-3:2008+A1:2010(E)

---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2010 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

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International Standards for all electrical, electronic and related technologies.

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IEC 61162-3
®
Edition 1.1 2010-11
INTERNATIONAL
STANDARD

colour
inside

Maritime navigation and radiocommunication equipment and systems –
Digital interfaces –
Part 3: Serial data instrument network

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
CF
ICS 47.020.70 ISBN 978-2-88912-190-8
® Registered trademark of the International Electrotechnical Commission

---------------------- Page: 3 ----------------------
– 2 – 61162-3 Ó IEC:2008+A1:2010(E)
CONTENTS
FOREW ORD . 3
INTRODUCTION . 5
1 Sc o pe . 6
2 Normative references . 6
3 Terms, definitions and conventions . 7
3.1 Terms and definitions . 7
3.2 Conventions . 10
4 Physical layer . 10
4.1 CAN transceiver . 10
4.2 Environmental. 10
4.3 Radio frequency interference. 10
4.3.1 Unwanted electromagnetic emissions . 10
4.3.2 Immunity to electromagnetic environment . 10
4.4 Cables . 10
4.5 Interface power . 11
4.6 Network power source . 11
5 Data link layer . 11
6 Network layer . 11
7 Network management . 11
7.1 Address configuration method . 11
7.2 Address retention . 11
8 Application layer . 11
8.1 Parameter groups . 11
8.1.1 Parameter group priority . 11
8.1.2 Parameter group broadcast rate . 12
9 Test criteria. 12
10 Application notes . 12
11 Manufacturer’s documentation . 12

Annex A (informative) System integration . 13

Bibliography . 17

Figure A.1 – Example of configuration . 15
Figure A.2 – Example of configuration . 15

Table A.1 – Test characteristics . 14

---------------------- Page: 4 ----------------------
61162-3 Ó IEC:2008+A1:2010(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________

MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS –
DIGITAL INTERFACES –

Part 3: Serial data instrument network



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.

This consolidated version of IEC 61162-3 consists of the first edition (2008) [documents
80/496/CDV and 80/526/RVC] and its amendment 1 (2010) [documents 80/580/CDV and
80/594/RVC]. It bears the edition number 1.1.
The technical content is therefore identical to the base edition and its amendment and
has been prepared for user convenience. A vertical line in the margin shows where the
base publication has been modified by amendment 1. Additions and deletions are
displayed in red, with deletions being struck through.

---------------------- Page: 5 ----------------------
– 4 – 61162-3 Ó IEC:2008+A1:2010(E)
International Standard IEC 61162-3 has been prepared by IEC technical committee 80:
Maritime navigation and radiocommunication equipment and systems.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 61162 series, under the general title Maritime navigation and
radiocommunication equipment and systems – Digital interfaces, can be found on the IEC
website.
The committee has decided that the contents of the base publication and its amendments 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.
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 publication using a colour printer.

---------------------- Page: 6 ----------------------
61162-3 Ó IEC:2008+A1:2010(E) – 5 –
INTRODUCTION
This part of IEC 61162 has been developed by the IEC technical committee 80 working
group 6, to meet the requirement for a versatile and economic means of connecting a wide
range of marine navigation and radiocommunications equipment aboard SOLAS vessels. The
National Marine Electronics Association’s Standard Committee has developed the NMEA
1 2
2000â standard. The NMEA 2000 Standard provides for capabilities across all classes of
vessels. The development of NMEA 2000 began in 1994 and was completed in 1999. More
than a dozen manufacturers worldwide conducted a two-year beta test. The finalised NMEA
2000 standard version 1.000 was published in 2001. IEC and NMEA have worked together
since 1999 to ensure that the NMEA 2000 standard fully supports SOLAS applications. NMEA
2000 version 1.200 was published in 2004, with expanded support for redundant messaging
and for equipments such as AIS.
The need for an improved standard, compared with IEC 61162-1 and IEC 61162-2, has arisen
due to the increased complexity of the latest equipment and systems. This requires multiple
links between equipment and greatly improved communication speed.
The parts 400 of the IEC 61162 series have already been issued and cater for the most
complex systems to be found on board a ship.
This new part 3 of IEC 61162 adopts the controller area network (CAN) technology, already
well established for many industrial systems. This permits a versatile system to be
established with the minimum of effort and reasonable cost. The equipment types supported
and the sentence data content developed for IEC 61162-1 has been retained.
IEC 61162-3 describes a low cost, moderate capacity, bi-directional multi-transmitter/multi-
receiver instrument network to interconnect marine electronic equipment. The connectors and
TM
3
cables used are compatible with industrial bus systems for instance DeviceNet and
TM
4
Profibus .
IEC 61162-3 provides for the application of NMEA 2000 aboard SOLAS vessels. Exceptions,
additions and specific requirements for implementation upon SOLAS vessels are contained in
this document.
INTRODUCTION
(to Amendment 1)

The amendment updates the normative reference for NMEA 2000 Appendix B to a later
version which includes five new sentences: PGN # 129807 - AIS Class B Group Assignment,
PGN # 129809 - AIS Class B "CS" Static Report Part A, PGN # 129810 - AIS Class B, PGN #
129039 - AIS Class B Position Report, and PGN # 129040 - AIS Class B Extended Position
Report.
—————————
1
NMEA 2000® is the registered trademark of the National Marine Electronics Association, Inc. This information
is given for the convenience of users of this International Standard and does not constitute an endorsement by
IEC of the trademark holder or any of its products. Compliance to this profile does not require use of the trade
name. Use of the trade name requires permission of the trade holder.
2
NMEA is the registered trademark of the National Marine Electronics Association, Inc. This information is given
for the convenience of users of this International Standard and does not constitute an endorsement by IEC of
the trademark holder or any of its products. Compliance to this profile does not require use of the trade name.
Use of the trade name requires permission of the trade holder.
TM
3
DeviceNet is the registered trademark of the Open DeviceNet Vendor Association, Inc. This information is
given for the convenience of users of this International Standard and does not constitute an endorsement by
IEC of the trademark holder or any of its products. Compliance to this profile does not require use of the trade
name. Use of the trade name requires permission of the trade holder.
TM
4
Profibus is the registered trademark of PROFIBUS International. This information is given for the
convenience of users of this International Standard and does not constitute an endorsement by IEC of the
trademark holder or any of its products. Compliance to this profile does not require use of the trade name. Use
of the trade name requires permission of the trade holder.

---------------------- Page: 7 ----------------------
– 6 – 61162-3 Ó IEC:2008+A1:2010(E)
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS –
DIGITAL INTERFACES –

Part 3: Serial data instrument network



1 Scope
This part of IEC 61162 is based upon the NMEA 2000 standard. The NMEA 2000 standard
contains the requirements for the minimum implementation of a serial-data communications
network to interconnect marine electronic equipment onboard vessels. Equipment designed to
this standard will have the ability to share data, including commands and status, with other
compatible equipment over a single signalling channel.
Data messages are transmitted as a series of data frames, each with robust error check
confirmed frame delivery and guaranteed latency times. As the actual data content of a data
frame is at best 50 % of the transmitted bits, this standard is primarily intended to support
relatively brief data messages, which may be periodic, transmitted as needed, or on-demand
by use of query commands. Typical data includes discrete parameters such as position
latitude and longitude, GPS status values, steering commands to autopilots, finite parameter
lists such as waypoints, and moderately sized blocks of data such as electronic chart
database updates. This standard is not necessarily intended to support high-bandwidth
applications such as radar, electronic chart or other video data, or other intensive database or
file transfer applications.
This standard defines all of the pertinent layers of the International Standards Organisation
Open Systems Interconnect (ISO/OSI) model, from the application layer to the physical layer,
necessary to implement the required IEC 61162-3 network functionality.
This standard defines data formats, network protocol, and the minimum physical layer
necessary for devices to interface. SOLAS applications shall employ redundant designs (for
instance dual networks, redundant network interface circuits) to reduce the impact of single
point failures. The NMEA 2000 standard provides the fundamental tools and methods to
support redundant equipment, buses and messaging. Specific shipboard installation designs
are beyond the scope of this standard, however some guidance is given in Annex A.
2 Normative references
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.
IEC 60945, Maritime navigation and radiocommunication equipment and systems – General
requirements – Methods of testing and required tes
...

IEC 61162-3
®


Edition 1.1 2010-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside

Maritime navigation and radiocommunication equipment and systems –
Digital interfaces –
Part 3: Serial data instrument network

Matériels et systèmes de navigation et de radiocommunication maritimes –
Interfaces numériques –
Partie 3: Réseau par liaison de données série d'instruments

IEC 61162-3:2008-05+AMD1:2010-06 CSV(en-fr)

---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2010 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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International Standards for all electrical, electronic and related technologies.

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IEC 61162-3

®


Edition 1.1 2010-11

CONSOLIDATED VERSION



INTERNATIONAL



STANDARD




NORME



INTERNATIONALE
colour

inside









Maritime navigation and radiocommunication equipment and systems –

Digital interfaces –

Part 3: Serial data instrument network




Matériels et systèmes de navigation et de radiocommunication maritimes –

Interfaces numériques –


Partie 3: Réseau par liaison de données série d'instruments













INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

INTERNATIONALE



ICS 47.020.70 ISBN 978-2-8322-1004-5



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

---------------------- Page: 3 ----------------------
IEC 61162-3
®


Edition 1.1 2010-11
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside


Maritime navigation and radiocommunication equipment and systems –
Digital interfaces –
Part 3: Serial data instrument network

Matériels et systèmes de navigation et de radiocommunication maritimes –
Interfaces numériques –
Partie 3: Réseau par liaison de données série d'instruments

IEC 61162-3:2008-05+AMD1:2010-06 CSV(en-fr)

---------------------- Page: 4 ----------------------
– 2 – IEC 61162-3:2008+AMD1:2010 CSV
  IEC 2010
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
INTRODUCTION to Amendment 1 . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and conventions . 7
3.1 Terms and definitions . 7
3.2 Conventions . 10
4 Physical layer . 10
4.1 CAN transceiver . 10
4.2 Environmental . 10
4.3 Radio frequency interference . 10
4.3.1 Unwanted electromagnetic emissions . 10
4.3.2 Immunity to electromagnetic environment . 10
4.4 Cables . 10
4.5 Interface power . 11
4.6 Network power source . 11
5 Data link layer . 11
6 Network layer . 11
7 Network management . 11
7.1 Address configuration method . 11
7.2 Address retention . 11
8 Application layer . 11
8.1 Parameter groups . 11
8.1.1 Parameter group priority . 11
8.1.2 Parameter group broadcast rate . 12
9 Test criteria . 12
10 Application notes . 12
11 Manufacturer’s documentation . 12
Annex A (informative) System integration . 13
Bibliography . 17

Figure A.1 – Example of configuration . 15
Figure A.2 – Example of configuration . 15

Table A.1 – Test characteristics . 14

---------------------- Page: 5 ----------------------
IEC 61162-3:2008+AMD1:2010 CSV – 3 –
 IEC 2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________

MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS –
DIGITAL INTERFACES –

Part 3: Serial data instrument network



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.
This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 61162-3 edition 1.1 contains the first edition (2008-05) [documents 80/496/CDV and
80/526/RVC] and its amendment 1 (2010-06) [documents 80/580/CDV and 80/594/RVC].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendment 1. Additions are in green text, deletions are in strikethrough
red text. A separate Final version with all changes accepted is available in this
publication.

---------------------- Page: 6 ----------------------
– 4 – IEC 61162-3:2008+AMD1:2010 CSV
  IEC 2010
International Standard IEC 61162-3 has been prepared by IEC technical committee 80:
Maritime navigation and radiocommunication equipment and systems.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 61162 series, under the general title Maritime navigation and
radiocommunication equipment and systems – Digital interfaces, can be found on the IEC
website.
The committee has decided that the contents of the base publication and its amendment 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.

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.

---------------------- Page: 7 ----------------------
IEC 61162-3:2008+AMD1:2010 CSV – 5 –
 IEC 2010
INTRODUCTION
This part of IEC 61162 has been developed by the IEC technical committee 80 working
group 6, to meet the requirement for a versatile and economic means of connecting a wide
range of marine navigation and radiocommunications equipment aboard SOLAS vessels. The
National Marine Electronics Association’s Standard Committee has developed the NMEA
1 2
2000 standard. The NMEA 2000 Standard provides for capabilities across all classes of
vessels. The development of NMEA 2000 began in 1994 and was completed in 1999. More
than a dozen manufacturers worldwide conducted a two-year beta test. The finalised NMEA
2000 standard version 1.000 was published in 2001. IEC and NMEA have worked together
since 1999 to ensure that the NMEA 2000 standard fully supports SOLAS applications. NMEA
2000 version 1.200 was published in 2004, with expanded support for redundant messaging
and for equipments such as AIS.
The need for an improved standard, compared with IEC 61162-1 and IEC 61162-2, has arisen
due to the increased complexity of the latest equipment and systems. This requires multiple
links between equipment and greatly improved communication speed.
The parts 400 of the IEC 61162 series have already been issued and cater for the most
complex systems to be found on board a ship.
This new part 3 of IEC 61162 adopts the controller area network (CAN) technology, already
well established for many industrial systems. This permits a versatile system to be
established with the minimum of effort and reasonable cost. The equipment types supported
and the sentence data content developed for IEC 61162-1 has been retained.
IEC 61162-3 describes a low cost, moderate capacity, bi-directional multi-transmitter/multi-
receiver instrument network to interconnect marine electronic equipment. The connectors and
TM
3
cables used are compatible with industrial bus systems for instance DeviceNet and
TM
4
Profibus .
IEC 61162-3 provides for the application of NMEA 2000 aboard SOLAS vessels. Exceptions,
additions and specific requirements for implementation upon SOLAS vessels are contained in
this document.
INTRODUCTION to Amendment 1

The amendment updates the normative reference for NMEA 2000 Appendix B to a later
version which includes five new sentences: PGN # 129807 - AIS Class B Group Assignment,
PGN # 129809 - AIS Class B "CS" Static Report Part A, PGN # 129810 - AIS Class B, PGN #
129039 - AIS Class B Position Report, and PGN # 129040 - AIS Class B Extended Position
Report.
—————————
1
NMEA 2000® is the registered trademark of the National Marine Electronics Association, Inc. This information
is given for the convenience of users of this International Standard and does not constitute an endorsement by
IEC of the trademark holder or any of its products. Compliance to this profile does not require use of the trade
name. Use of the trade name requires permission of the trade holder.
2
NMEA is the registered trademark of the National Marine Electronics Association, Inc. This information is given
for the convenience of users of this International Standard and does not constitute an endorsement by IEC of
the trademark holder or any of its products. Compliance to this profile does not require use of the trade name.
Use of the trade name requires permission of the trade holder.
TM
3
DeviceNet is the registered trademark of the Open DeviceNet Vendor Association, Inc. This information is
given for the convenience of users of this International Standard and does not constitute an endorsement by
IEC of the trademark holder or any of its products. Compliance to this profile does not require use of the trade
name. Use of the trade name requires permission of the trade holder.
TM
4
Profibus is the registered trademark of PROFIBUS International. This information is given for the
convenience of users of this International Standard and does not constitute an endorsement by IEC of the
trademark holder or any of its products. Compliance to this profile does not require use of the trade name. Use
of the trade name requires permission of the trade holder.

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  IEC 2010
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS –
DIGITAL INTERFACES –

Part 3: Serial data instrument network



1 Scope
This part of IEC 61162 is based upon the NMEA 2000 standard. The NMEA 2000 standard
contains the requirements for the minimum implementation of a serial-data communications
network to interconnect marine electronic equipment onboard vessels. Equipment designed to
this standard will have the ability to share data, including commands and status, with other
compatible equipment over a single signalling channel.
Data messages are transmitted as a series of data frames, each with robust error check
confirmed frame delivery and guaranteed latency times. As the actual data content of a data
frame is at best 50 % of the transmitted bits, this standard is primarily intended to support
relatively brief data messages, which may be periodic, transmitted as needed, or on-demand
by use of query commands. Typical data includes discrete parameters such as position
latitude and longitude, GPS status values, steering commands to autopilots, finite parameter
lists such as waypoints, and moderately sized blocks of data such as electronic chart
database updates. This standard is not necessarily intended to support high-bandwidth
applications such as radar, electronic chart or other video data, or other intensive database or
file transfer applications.
This standard defines all of the pertinent layers of the International Standards Organisation
Open Systems Interconnect (ISO/OSI) model, from the application layer to the physical layer,
necessary to implement the required IEC 61162-3 network functionality.
This standard defines data formats, network protocol, and the minimum physical layer
necessary for devices to interface. SOLAS applications shall employ redundant designs (for
instance dual networks, redundant network interface circuits) to reduce the impact of single
point failures. The NMEA 2000 standard provides the fundamental tools and methods to
support redundant equipment, buses and messaging. Specific shipboard installation designs
are beyond the scope of this standard, however some guidance is given in Annex A.
2 Normative references
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.
IEC 60945, Maritime navigation and radiocommunication equipment and systems – General
requirements – Methods of testing and required test results
ISO 11783 (all parts), Tractors and machinery for agriculture and forestry – Serial control
and communications data network
ISO 11783-3, Tractors and machinery for agriculture and forestry – Serial control and
communications data network – Part 3: Data link layer

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IEC 61162-3:2008+AMD1:2010 CSV – 7 –
 IEC 2010
ISO 11783-5:2001, Tractors and machinery for agriculture and forestry – Serial control and
communications data network – Part 5 Network management (including its corrigendum 1
(2002))
NMEA 2000 Main document, Version 1.200: October 2004, Serial-Data Networking Of Marine
5
Electronic Devices
NMEA 2000, Appendix A, Version 1.200: October 2004, Serial-Data Networking Of Marine
Electronic Devices – Application Layer (Parameter Group Definitions)
NMEA 2000, Appendix B, Version 1.210: September 2006 1.300: May 2009, Serial-Data
Networking Of Marine Electronic Devices – Data Base
NMEA 2000, Appendix C, Version 1.200: October 2004, Serial-Data Networking Of Marine
Electronic Devices – Certification Criteria and Test Methods
NMEA 2000, Appendix D, Version 1.200: October 2004, Serial-Data Networking Of Marine

Electronic Devices – Application Notes
IMO 1974, International Convention for the Safety of Life at Sea (SOLAS), as amended –
Chapter V – Safety of navigation
3 Terms, definitions and conventions
3.1 Terms and definitions
For the purposes of this document, the following definitions apply.
3.1.1
bit
the smallest element of information on the communication channel
NOTE Bits are grouped into bit fields of one or more bits. A bit is of constant time duration set by the signalling
rate specified in this standard and has one of two logical values, dominant or recessive. When dominant and
recessive levels are impressed on the communications channel at the same time the resulting level is dominant.
3.1.2
bridge
device that joins two network segments using the same network protocol and address space
NOTE Data rate and physical media may differ on the two sides of a bridge. A bridge may perform message
filtering.
3.1.3
byte
eight bits
3.1.4
Controller area network (CAN) frame
series of bits transmitted on the communications channel
NOTE CAN frames convey the following types of information:
• data frame. Carries data from a transmitter to the receivers.
• error frame. Transmitted by a unit detecting a bus error.
• overload frame. Transmitted to provide a delay between preceding and succeeding data frames.
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5
Available from National Marine Electronics Association (USA), www.nmea.org.

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  IEC 2010
The CAN data frame has defined start of frame and end of frame bit fields and is separated from preceding fields
by an interframe space. CAN error and overload frames, when used, are appended directly to the preceding frame
without an interframe space.
3.1.5
class 1 devices
refers to devices that have a single level A or level B network interface connection
3.1.6
class 2 devices
describes devices that have two level A or two level B network interface connections
NOTE Class 2 devices are intended for use on dual redundant bus systems. In addition to providing either level A
or level B capabilities, class 2 devices provide a means to identify messages that are received from redundant
buses as being the same or different.
3.1.7
default operation
operation or settings that exist when standard equipment is first shipped from the
manufacturer
3.1.8
device
a product or equipment which, through a node, is connected to an IEC 61162-3 network
3.1.9
gateway
device that joins a network to another network or system
3.1.10
interframe space
bit field that separates data frames from preceding frames
3.1.11
level A devices
support the ISO transport layer and the complete set of network management parameter
groups
3.1.12
level B devices
support address claim, ISO request PGN, and the product information parameter group
3.1.13
listen only device
device on the network that receives messages but does not participate in bus activity
NOTE This device cannot send any frames on the network (data, error, or acknowledge).
3.1.14
load equivalency number
a node’s power rating reported in units of network load
3.1.15
message
consists of one or more data frames, as specified in this standard, that contain the parameter
group information to be communicated from a network address
NOTE A message contains the message priority code, parameter group number, destination network address,
source network address, and data fields. The destination network address may be a specific address or global.

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IEC 61162-3:2008+AMD1:2010 CSV – 9 –
 IEC 2010
3.1.16
network address
identifier of a functional entity on the network
3.1.17
network load
one network load is a unit of measure defined as 50 mA
NOTE This is used to determine loading of network.
3.1.18
node
a physical connection to the network
NOTE A node may have more than one network address, see virtual nodes.
3.1.19
node power
power supplied from the network
3.1.20
parameter group (PG)
set of associated variables, commands, status, or other information to be transmitted on the
network
3.1.21
parameter group number (PGN)
an 8-bit or 16-bit number that identifies each parameter group
NOTE The parameter group number (PGN) is analogous to the three-character sentence formatter in
IEC 61162-1. By definition, parameter groups identified by 16-bit parameter group numbers are broadcast to all
addresses on the network. Parameter groups identified by 8-bit parameter group numbers may be used to direct
data for use by a specific address.
3.1.22
receiver
recipient of a message if the bus is not idle and the device is not a transmitter
3.1.23
router
device that joins two network segments with the same network protocol
NOTE On each side of a router address space, data rate and physical media may differ.
3.1.24
transmitter
originator of a message
NOTE The unit remains a transmitter until it loses arbitration or until the bus becomes idle.
3.1.25
virtual nodes
functional entities within a device that share a physical connection to the network
NOTE Each virtual node within a device has a unique address on the network.

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3.2
...