IEC 61987-11:2012
(Main)Industrial-process measurement and control - Data structures and elements in process equipment catalogues - Part 11: List of Properties (LOP) of measuring equipment for electronic data exchange - Generic structures
Industrial-process measurement and control - Data structures and elements in process equipment catalogues - Part 11: List of Properties (LOP) of measuring equipment for electronic data exchange - Generic structures
IEC 61987-11:2012 provides a characterisation of industrial process measuring equipment (device type dictionary) for integration in the Component Data Dictionary (CDD) and generic structures for Operating Lists of Properties (OLOPs) and Device Lists of Properties (DLOPs) of measuring equipment in conformance with IEC 61987-10. This bilingual version (2014-01) corresponds to the monolingual English version, published in 2012-07.
Mesure et contrôle des processus industriels - Structures de données et éléments dans les catalogues d'equipement de processus - Partie 11: Liste de propriétés (LOP) d'équipements de mesure pour échange de données électronique - Structures génériques
L'IEC 61987-11:2012 fournit une caractérisation des équipements de mesure de processus industriels (dictionnaire des types de dispositifs) pour l'intégration dans le dictionnaire de données de composants (CDD, en anglais "Component Data Dictionary") et des structures génériques pour les listes de propriétés fonctionnelles (OLOP, en anglais "Operating List of Properties") et les listes de propriétés des dispositifs de mesure (DLOP, en anglais "Device List of Properties") en conformité avec la CEI 61987-10. La présente version bilingue (2014-01) correspond à la version anglaise monolingue publiée en 2012-07.
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IEC 61987-11
®
Edition 1.0 2012-07
INTERNATIONAL
STANDARD
Industrial-process measurement and control – Data structures and elements
in process equipment catalogues –
Part 11: List of Properties (LOP) of measuring equipment for electronic data
exchange – Generic structures
IEC 61987-11:2012(E)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2012 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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About the IEC
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International Standards for all electrical, electronic and related technologies.
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IEC 61987-11
®
Edition 1.0 2012-07
INTERNATIONAL
STANDARD
Industrial-process measurement and control – Data structures and elements
in process equipment catalogues –
Part 11: List of Properties (LOP) of measuring equipment for electronic data
exchange – Generic structures
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XA
ICS 25.040.40; 35.100.20 ISBN 978-2-83220-283-8
Warning! Make sure that you obtained this publication from an authorized distributor.
® Registered trademark of the International Electrotechnical Commission
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– 2 – 61987-11 © IEC:2012(E)
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
3.1 Terms and definitions concerning measuring instruments . 10
3.2 Terms and definitions concerning relationships . 11
4 General . 13
4.1 Characterization scheme . 13
4.2 Aspects . 13
4.3 Rules for the construction of LOPs with block structure . 15
4.3.1 Block order . 15
4.3.2 Position of cardinality properties . 15
4.3.3 Naming of blocks created by cardinality . 15
4.3.4 Characterizing property . 15
4.3.5 Validity . 15
4.4 OLOP and DLOP . 15
4.5 Operating conditions . 16
4.6 Measuring equipment configuration . 17
5 Operating List of Properties (OLOP) . 18
5.1 Generic block structure . 18
5.2 Base conditions . 18
5.3 Process case . 19
5.3.1 General . 19
5.3.2 Process case variables . 19
5.3.3 Other process case variable . 20
5.4 Operating conditions for device design . 20
5.4.1 General . 20
5.4.2 Installation design conditions . 20
5.4.3 Environmental design conditions . 20
5.4.4 Process design conditions . 21
5.4.5 Pressure-temperature design conditions . 21
5.5 Process equipment . 22
5.5.1 General . 22
5.5.2 Line or equipment nozzle . 22
5.6 Physical location . 22
5.6.1 General . 22
5.6.2 Available power supply . 22
5.6.3 Process criticality classification . 23
5.6.4 Area classification . 23
6 Device list of properties (DLOP) . 23
6.1 General . 23
6.1.1 Generic block structure . 23
6.1.2 Relationship to IEC 61987-1 . 25
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61987-11 © IEC:2012(E) – 3 –
6.1.3 Multivariable devices . 25
6.2 Identification . 25
6.3 Application . 26
6.4 Function and system design . 26
6.4.1 General . 26
6.4.2 Dependability . 26
6.5 Input . 26
6.5.1 General . 26
6.5.2 Measured variable . 26
6.5.3 Auxiliary input . 27
6.6 Output . 28
6.6.1 General . 28
6.6.2 output . 28
6.7 Digital communication . 29
6.7.1 General . 29
6.7.2 Digital communication interface . 29
6.8 Performance . 30
6.8.1 General . 30
6.8.2 Reference conditions for the device . 30
6.8.3 Performance variable. 30
6.9 Rated operating conditions . 32
6.9.1 General . 32
6.9.2 Installation conditions . 32
6.9.3 Environmental design ratings . 32
6.9.4 Process design ratings . 33
6.9.5 Pressure-temperature design ratings . 34
6.10 Mechanical and electrical construction . 34
6.10.1 General . 34
6.10.2 Overall dimensions and weight . 34
6.10.3 Structural design . 34
6.10.4 Explosion protection design approval . 34
6.10.5 Codes and standards approval . 34
6.11 Operability . 35
6.11.1 General . 35
6.11.2 Basic configuration . 35
6.11.3 Parametrization . 35
6.11.4 Adjustment . 35
6.11.5 Operation . 35
6.11.6 Diagnosis . 35
6.12 Power supply . 35
6.13 Certificates and approvals . 35
6.14 Component part identifications . 35
7 Composite devices . 36
7.1 Structure of composite devices . 36
7.2 Aspects of components . 37
8 Additional aspects . 38
8.1 Administrative information . 38
8.2 Calibration and test . 38
8.3 Accessories . 38
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– 4 – 61987-11 © IEC:2012(E)
8.4 Device documents supplied . 38
8.5 Packaging and shipping. 39
8.6 Digital communication parametrization . 39
8.7 Example of a composite device with aspects . 39
Annex A (normative) Device type dictionary – Classification of process measuring
equipment according to measuring characteristics . 40
Bibliography . 53
Figure 1 – Characterisation of measuring equipment . 13
Figure 2 – Simplified UML scheme of device, LOPs and aspects . 14
Figure 3 – Assignment of OLOPs and DLOPs for equipment used to measure one type
of measured variable . 16
Figure 4 – Structure of a composite device . 36
Figure 5 – Example for the structure of a LOP for a composite device showing different
aspects related to different sub-components . 39
Table 1 – Structure of the “Operating conditions for device design” block in the OLOP . 17
Table 2 – Structure of the “rated operating conditions” block in the DLOP . 17
Table 3 – Generic block structure of an OLOP . 18
Table 4 – Generic block structure of a DLOP . 24
Table 5 – DLOP structure for composite devices . 37
Table A.1 – Classification scheme for process measuring equipment . 40
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61987-11 © IEC:2012(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL-PROCESS MEASUREMENT AND CONTROL –
DATA STRUCTURES AND ELEMENTS
IN PROCESS EQUIPMENT CATALOGUES –
Part 11: List of Properties (LOP) of measuring equipment
for electronic data exchange –
Generic structures
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,
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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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
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.
International Standard IEC 61987-11 has been prepared by subcommittee 65E: Devices and
integration in enterprise systems, of IEC technical committee 65:Industrial-process
measurement, control and automation.
The text of this standard is based on the following documents:
FDIS Report on voting
65E/245/FDIS 65E/270/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
---------------------- Page: 7 ----------------------
– 6 – 61987-11 © IEC:2012(E)
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 61987 series, published under the general title, Industrial-process
measurement and control – Data structures and elements in process equipment catalogues,
can be found on the IEC website.
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.
A bilingual version of this publication may be issued at a later date.
---------------------- Page: 8 ----------------------
61987-11 © IEC:2012(E) – 7 –
INTRODUCTION
0.1 General
The exchange of product data between companies, business systems, engineering tools, data
systems within companies and, in the future, control systems (electrical, measuring and
control technology) can run smoothly only when both the information to be exchanged and the
use of this information has been clearly defined.
Prior to this standard, requirements on process control devices and systems were specified by
customers in various ways when suppliers or manufacturers were asked to quote for suitable
equipment. The suppliers in their turn described the devices according to their own
documentation schemes, often using different terms, structures and media (paper, databases,
CDs, e-catalogues, etc.). The situation was similar in the planning and development process,
with device information frequently being duplicated in a number of different information
technology (IT) systems.
Any method that is capable of recording all existing information only once during the planning
and ordering process and making it available for further processing, gives all parties involved
an opportunity to concentrate on the essentials. A precondition for this is the standardization
of both the descriptions of the objects and the exchange of information.
This standard series proposes a method for standardization which will help both suppliers and
users of measuring equipment to optimize workflows within their own companies as well as in
their exchanges with other companies. Depending on their role in the process, engineering
firms may be considered here to be either users or suppliers.
The method specifies measuring equipment by means of blocks of properties. These blocks
are compiled into lists of properties (LOPs), each of which describes a specific equipment
(device) type. This standard series covers both properties that may be used in an inquiry or a
proposal and detailed properties required for integration of the equipment in computer
systems for other tasks.
IEC 61987-10 defines structure elements for constructing lists of properties for electrical and
process control equipment in order to facilitate automatic data exchange between any two
computer systems in any possible workflow, for example engineering, maintenance or
purchasing workflow and to allow both the customers and the suppliers of the equipment to
optimize their processes and workflows. Part 10 also provides the data model for assembling
the LOPs.
This part of the IEC 61987 series specifies the generic structure for operating and device lists
of properties (OLOPs and DLOPs). It lays down the framework for further parts of IEC 61987
in which complete LOPs for device types measuring a given physical variable and using a
particular measuring principle will be specified. The generic structure may also serve as a
basis for the specification of LOPs for other industrial-process control instrument types such
as control valves and signal processing equipment.
0.2 Content of the lists of properties (LOPs)
The LOPs specified in this standard describe at generic level:
• the operating conditions of the measuring equipment,
• the ambient conditions at the measuring point,
• the performance of the measuring equipment,
• the metrological, mechanical and electrical features of the measuring equipment,
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– 8 – 61987-11 © IEC:2012(E)
• the compliance of the measuring instrument to specific industrial requirements.
The LOPs mirror constructive reality but do not represent an instrument model.
0.3 Measuring equipment configuration
The generic LOPs have been so constructed that they take account of integral equipment and
separately mounted equipment.
0.4 Device type dictionary
Annex A of this part describes a characterisation of measuring equipment based on the STEP
library, ISO 10303. This is a tree of relationships between different device types. Starting at
the root “automation equipment”, it first characterizes measuring equipment according to type,
then according to process variable measured and finally according to the measuring method
employed. This structure will be used in the IEC Component Data Dictionary (CDD)
“Automation equipment” Domain.
For the purpose of this standard the following types of measuring equipment have been
identified and defined in Clause 3: sight indicator, gauge, transmitter, switch and measuring
assembly.
It should be noted that in the real world, there is not such a clear demarcation between types
of measuring equipment. In commercial literature indicators are often called gauges, although
the products offer no quantitative measurement. Similarly, direct indicating displays are often
equipped with electrical trip switches which allow a gauge to act as a switch. Finally,
“transmitter” is by no means a universal term and in particular for flow measurement many
manufacturers call this kind of equipment “meter”.
0.5 Composite devices
A structural scheme is given, defining how to build up LOPs for devices consisting of several
components or assembled from different parts, that is, composite devices and measuring
assemblies.
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61987-11 © IEC:2012(E) – 9 –
INDUSTRIAL-PROCESS MEASUREMENT AND CONTROL –
DATA STRUCTURES AND ELEMENTS
IN PROCESS EQUIPMENT CATALOGUES –
Part 11: List of Properties (LOP) of measuring equipment
for electronic data exchange –
Generic structures
1 Scope
This part of IEC 61987 provides
• a characterisation of industrial process measuring equipment (device type dictionary) for
integration in the Component Data Dictionary (CDD), and
• generic structures for Operating Lists of Properties (OLOPs) and Device Lists of
Properties (DLOPs) of measuring equipment in conformance with IEC 61987-10.
The generic structures for the OLOPs and DLOPs contain the most important blocks for
process measuring equipment. Blocks pertaining to a specific equipment type will be
described in the corresponding part of the IEC 61987 series (for example IEC 61987-12, flow
transmitters). Similarly, equipment properties are not dealt with in this part of the series For
instance, the OLOPs and DLOPs for flow transmitters with blocks and properties will be found
in future in IEC 61987-12.
2 Normative references
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.
IEC 61069-5, Industrial-process measurement and control – Evaluation of system properties
for the purpose of system assessment – Part 5: Assessment of system dependability
IEC 61508-6, Functional safety of electrical/electronic/programmable electronic safety-related
systems – Part 6: Guidelines on the application of IEC 61508-2 and IEC 61508-3
IEC 61987 (all parts), Industrial-process measurement and control – Data structures and
elements in process equipment catalogues
IEC 61987-1:2006, Industrial-process measurement and control – Data structures and
elements in process equipment catalogues – Part 1: Measuring equipment with analog and
digital output
IEC 61987-10:2009 Industrial-process measurement and control – Data structures and
elements in process equipment catalogues – Part 10: Lists of Properties (LOPs) for Industrial-
Process Measurement and Control for Electronic Data Exchange – Fundamentals
IEC 62424, Representation of process control engineering – Requests in P&I diagrams and
data exchange between P&ID tools and PCE-CAE tools
---------------------- Page: 11 ----------------------
– 10 – 61987-11 © IEC:2012(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Terms and definitions concerning measuring instruments
3.1.1
composite device with main component
device composed of various devices, whereby one is designated the main component
Note 1 to
...
IEC 61987-11
®
Edition 1.0 2012-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial-process measurement and control – Data structures and elements
in process equipment catalogues –
Part 11: List of Properties (LOP) of measuring equipment for electronic data
exchange – Generic structures
Mesure et contrôle des processus industriels – Structures de données et
éléments dans les catalogues d'équipement de processus –
Partie 11: Liste de propriétés (LOP) d'équipements de mesure pour échange de
données électronique – Structures génériques
IEC 61987-11:2012-07(EN-FR)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
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International Standards for all electrical, electronic and related technologies.
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IEC 61987-11
®
Edition 1.0 2012-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial-process measurement and control – Data structures and elements
in process equipment catalogues –
Part 11: List of Properties (LOP) of measuring equipment for electronic data
exchange – Generic structures
Mesure et contrôle des processus industriels – Structures de données et
éléments dans les catalogues d'équipement de processus –
Partie 11: Liste de propriétés (LOP) d'équipements de mesure pour échange de
données électronique – Structures génériques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XA
ICS 25.040.40; 35.100.20 ISBN 978-2-8322-1332-2
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 ----------------------
– 2 – 61987-11 © IEC:2012
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
3.1 Terms and definitions concerning measuring instruments . 10
3.2 Terms and definitions concerning relationships . 11
4 General . 13
4.1 Characterization scheme . 13
4.2 Aspects . 13
4.3 Rules for the construction of LOPs with block structure . 15
4.3.1 Block order . 15
4.3.2 Position of cardinality properties . 15
4.3.3 Naming of blocks created by cardinality . 15
4.3.4 Characterizing property . 15
4.3.5 Validity . 15
4.4 OLOP and DLOP . 15
4.5 Operating conditions . 16
4.6 Measuring equipment configuration . 17
5 Operating List of Properties (OLOP) . 18
5.1 Generic block structure . 18
5.2 Base conditions . 18
5.3 Process case . 19
5.3.1 General . 19
5.3.2 Process case variables . 19
5.3.3 Other process case variable . 20
5.4 Operating conditions for device design . 20
5.4.1 General . 20
5.4.2 Installation design conditions . 20
5.4.3 Environmental design conditions . 20
5.4.4 Process design conditions . 21
5.4.5 Pressure-temperature design conditions . 21
5.5 Process equipment . 22
5.5.1 General . 22
5.5.2 Line or equipment nozzle . 22
5.6 Physical location . 22
5.6.1 General . 22
5.6.2 Available power supply . 22
5.6.3 Process criticality classification . 23
5.6.4 Area classification . 23
6 Device list of properties (DLOP) . 23
6.1 General . 23
6.1.1 Generic block structure . 23
6.1.2 Relationship to IEC 61987-1 . 25
6.1.3 Multivariable devices . 25
6.2 Identification . 25
---------------------- Page: 4 ----------------------
61987-11 © IEC:2012 – 3 –
6.3 Application . 26
6.4 Function and system design . 26
6.4.1 General . 26
6.4.2 Dependability . 26
6.5 Input . 26
6.5.1 General . 26
6.5.2 Measured variable . 26
6.5.3 Auxiliary input . 27
6.6 Output . 28
6.6.1 General . 28
6.6.2 output . 28
6.7 Digital communication . 29
6.7.1 General . 29
6.7.2 Digital communication interface . 29
6.8 Performance . 30
6.8.1 General . 30
6.8.2 Reference conditions for the device . 30
6.8.3 Performance variable. 30
6.9 Rated operating conditions . 32
6.9.1 General . 32
6.9.2 Installation conditions . 32
6.9.3 Environmental design ratings . 32
6.9.4 Process design ratings . 33
6.9.5 Pressure-temperature design ratings . 34
6.10 Mechanical and electrical construction . 34
6.10.1 General . 34
6.10.2 Overall dimensions and weight . 34
6.10.3 Structural design . 34
6.10.4 Explosion protection design approval . 34
6.10.5 Codes and standards approval . 34
6.11 Operability . 35
6.11.1 General . 35
6.11.2 Basic configuration . 35
6.11.3 Parametrization . 35
6.11.4 Adjustment . 35
6.11.5 Operation . 35
6.11.6 Diagnosis . 35
6.12 Power supply . 35
6.13 Certificates and approvals . 35
6.14 Component part identifications . 35
7 Composite devices . 36
7.1 Structure of composite devices . 36
7.2 Aspects of components . 37
8 Additional aspects . 38
8.1 Administrative information . 38
8.2 Calibration and test . 38
8.3 Accessories . 38
8.4 Device documents supplied . 38
8.5 Packaging and shipping. 39
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8.6 Digital communication parametrization . 39
8.7 Example of a composite device with aspects . 39
Annex A (normative) Device type dictionary – Classification of process measuring
equipment according to measuring characteristics . 40
Bibliography . 53
Figure 1 – Characterisation of measuring equipment . 13
Figure 2 – Simplified UML scheme of device, LOPs and aspects . 14
Figure 3 – Assignment of OLOPs and DLOPs for equipment used to measure one type
of measured variable . 16
Figure 4 – Structure of a composite device . 36
Figure 5 – Example for the structure of a LOP for a composite device showing different
aspects related to different sub-components . 39
Table 1 – Structure of the “Operating conditions for device design” block in the OLOP . 17
Table 2 – Structure of the “rated operating conditions” block in the DLOP . 17
Table 3 – Generic block structure of an OLOP . 18
Table 4 – Generic block structure of a DLOP . 24
Table 5 – DLOP structure for composite devices . 37
Table A.1 – Classification scheme for process measuring equipment . 40
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61987-11 © IEC:2012 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL-PROCESS MEASUREMENT AND CONTROL –
DATA STRUCTURES AND ELEMENTS
IN PROCESS EQUIPMENT CATALOGUES –
Part 11: List of Properties (LOP) of measuring equipment
for electronic data exchange –
Generic structures
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
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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
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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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
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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
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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.
International Standard IEC 61987-11 has been prepared by subcommittee 65E: Devices and
integration in enterprise systems, of IEC technical committee 65: Industrial-process
measurement, control and automation.
This bilingual version (2014-01) corresponds to the monolingual English version, published in
2012-07.
The text of this standard is based on the following documents:
FDIS Report on voting
65E/245/FDIS 65E/270/RVD
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Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
The French version of this standard has not been voted upon.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 61987 series, published under the general title, Industrial-process
measurement and control – Data structures and elements in process equipment catalogues,
can be found on the IEC website.
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.
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61987-11 © IEC:2012 – 7 –
INTRODUCTION
0.1 General
The exchange of product data between companies, business systems, engineering tools, data
systems within companies and, in the future, control systems (electrical, measuring and
control technology) can run smoothly only when both the information to be exchanged and the
use of this information has been clearly defined.
Prior to this standard, requirements on process control devices and systems were specified by
customers in various ways when suppliers or manufacturers were asked to quote for suitable
equipment. The suppliers in their turn described the devices according to their own
documentation schemes, often using different terms, structures and media (paper, databases,
CDs, e-catalogues, etc.). The situation was similar in the planning and development process,
with device information frequently being duplicated in a number of different information
technology (IT) systems.
Any method that is capable of recording all existing information only once during the planning
and ordering process and making it available for further processing, gives all parties involved
an opportunity to concentrate on the essentials. A precondition for this is the standardization
of both the descriptions of the objects and the exchange of information.
This standard series proposes a method for standardization which will help both suppliers and
users of measuring equipment to optimize workflows within their own companies as well as in
their exchanges with other companies. Depending on their role in the process, engineering
firms may be considered here to be either users or suppliers.
The method specifies measuring equipment by means of blocks of properties. These blocks
are compiled into lists of properties (LOPs), each of which describes a specific equipment
(device) type. This standard series covers both properties that may be used in an inquiry or a
proposal and detailed properties required for integration of the equipment in computer
systems for other tasks.
IEC 61987-10 defines structure elements for constructing lists of properties for electrical and
process control equipment in order to facilitate automatic data exchange between any two
computer systems in any possible workflow, for example engineering, maintenance or
purchasing workflow and to allow both the customers and the suppliers of the equipment to
optimize their processes and workflows. Part 10 also provides the data model for assembling
the LOPs.
This part of the IEC 61987 series specifies the generic structure for operating and device lists
of properties (OLOPs and DLOPs). It lays down the framework for further parts of IEC 61987
in which complete LOPs for device types measuring a given physical variable and using a
particular measuring principle will be specified. The generic structure may also serve as a
basis for the specification of LOPs for other industrial-process control instrument types such
as control valves and signal processing equipment.
0.2 Content of the lists of properties (LOPs)
The LOPs specified in this standard describe at generic level:
• the operating conditions of the measuring equipment,
• the ambient conditions at the measuring point,
• the performance of the measuring equipment,
• the metrological, mechanical and electrical features of the measuring equipment,
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• the compliance of the measuring instrument to specific industrial requirements.
The LOPs mirror constructive reality but do not represent an instrument model.
0.3 Measuring equipment configuration
The generic LOPs have been so constructed that they take account of integral equipment and
separately mounted equipment.
0.4 Device type dictionary
Annex A of this part describes a characterisation of measuring equipment based on the STEP
library, ISO 10303. This is a tree of relationships between different device types. Starting at
the root “automation equipment”, it first characterizes measuring equipment according to type,
...
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