Industrial-process measurement and control - Data structures and elements in process equipment catalogues - Part 13: Lists of properties (LOP) for pressure measuring equipment for electronic data exchange

IEC 61987-13:2016 provides an operating list of properties (OLOP) for the description of the operating parameters and the collection of requirements for a pressure measuring equipment, and device lists of properties (DLOP) for a range of pressure measuring equipment types describing them.

Mesure et commande dans les processus industriels - Éléments et structures de données dans les catalogues d'équipements de processus - Partie 13: Listes des propriétés (LOP) pour les équipements de mesure de pression pour l'échange électrique de données

L'IEC 61987-13:2016 décrit une liste de propriétés fonctionnelles (OLOP) pour la description des paramètres fonctionnels et l'ensemble des exigences pour un équipement de mesure de pression, et des listes de propriétés d'appareils (DLOP) pour une gamme de types d'équipements de mesure de pression qui les décrit.

General Information

Status
Published
Publication Date
22-Mar-2016
Current Stage
PPUB - Publication issued
Start Date
23-Mar-2016
Completion Date
15-Feb-2016
Ref Project
Standard
IEC 61987-13:2016 - Industrial-process measurement and control - Data structures and elements in process equipment catalogues - Part 13: Lists of properties (LOP) for pressure measuring equipment for electronic data exchange
English and French language
49 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)


IEC 61987-13 ®
Edition 1.0 2016-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial-process measurement and control – Data structures and elements
in process equipment catalogues –
Part 13: Lists of properties (LOP) for pressure measuring equipment for
electronic data exchange
Mesure et commande dans les processus industriels – Éléments et structures
de données dans les catalogues d’équipements de processus –
Partie 13: Listes des propriétés (LOP) pour les équipements de mesure de
pression pour l'échange électronique de données

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.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
IEC Just Published - webstore.iec.ch/justpublished

Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: csc@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient 20 000 termes et définitions en anglais
Spécifications techniques, Rapports techniques et autres
et en français, ainsi que les termes équivalents dans 15
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.

Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
La recherche avancée permet de trouver des publications IEC 65 000 entrées terminologiques électrotechniques, en anglais
en utilisant différents critères (numéro de référence, texte, et en français, extraites des articles Termes et Définitions des
comité d’études,…). Elle donne aussi des informations sur les publications IEC parues depuis 2002. Plus certaines entrées
projets et les publications remplacées ou retirées. antérieures extraites des publications des CE 37, 77, 86 et

CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished

Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications IEC. Just
Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette
Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:
csc@iec.ch.
IEC 61987-13 ®
Edition 1.0 2016-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial-process measurement and control – Data structures and elements

in process equipment catalogues –

Part 13: Lists of properties (LOP) for pressure measuring equipment for

electronic data exchange
Mesure et commande dans les processus industriels – Éléments et structures

de données dans les catalogues d’équipements de processus –

Partie 13: Listes des propriétés (LOP) pour les équipements de mesure de

pression pour l'échange électronique de données

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.100.20 ISBN 978-2-8322-3224-8

– 2 – IEC 61987-13:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 7
3.1 General . 7
3.2 Terms relating to measuring range . 7
3.3 Terms relating to performance . 7
4 General . 9
4.1 Overview. 9
4.2 Depiction of OLOPs and DLOPs . 10
4.2.1 General . 10
4.2.2 Structural roles . 10
4.2.3 Marking of polymorphic areas . 11
4.3 Examples of DLOP block usage . 13
4.3.1 Block “Digital communication” . 13
4.3.2 Sub-block “Dial indicator” . 15
Annex A (normative) Operating list of properties for pressure measuring equipment . 18
Annex B (normative) Device lists of properties for pressure measuring equipment . 19
B.1 Absolute/gauge pressure transmitter . 19
B.2 Differential pressure transmitter . 19
B.3 Absolute/gauge pressure gauge . 19
B.4 Differential pressure gauge . 19
B.5 Remote seal . 20
B.6 Manifold . 20
Annex C (normative) Property library . 21
Annex D (normative) Block library for considered device types . 22
Bibliography . 23

Figure 1 – Structure of a polymorphic area . 11

Table 1 – Example of structure of polymorphic areas in the DLOPs . 12
Table 2 – Example of structure of polymorphic areas in the OLOP . 13
Table 3 – Example for “Digital Communication” . 13
Table 4 – Example for “Dial indicator” . 15

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL-PROCESS MEASUREMENT AND CONTROL –
DATA STRUCTURES AND ELEMENTS IN PROCESS
EQUIPMENT CATALOGUES –
Part 13: Lists of properties (LOP) for pressure
measuring equipment for electronic data exchange

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.
International Standard IEC 61987-13 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:
CDV Report on voting
65E/398/CDV 65E/471/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

– 4 – IEC 61987-13:2016 © IEC 2016
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 61987, 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 website 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.
INTRODUCTION
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 both within their own companies and 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. IEC 61987-10 also provides the data model for
assembling the LOPs.
IEC 61987-11 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.
IEC 61987-13 concerns pressure measuring equipment. It provides one operating LOP for all
types of pressure transmitter or pressure gauge which can be used, for example, as a request
for various sorts of quotation. The DLOPs for the various pressure transmitter and gauge
types provided in this part of IEC 61987 can be used in very different ways in the computer
systems of equipment manufacturers and suppliers, in CAE and similar systems of EPC
contractors and other engineering companies and especially different plant maintenance
systems of the plant owners. The OLOP and the DLOPs provided correspond to the guidelines
specified in IEC 61987-10 and IEC 61987-11.

– 6 – IEC 61987-13:2016 © IEC 2016
INDUSTRIAL-PROCESS MEASUREMENT AND CONTROL –
DATA STRUCTURES AND ELEMENTS IN PROCESS
EQUIPMENT CATALOGUES –
Part 13: Lists of properties (LOP) for pressure
measuring equipment for electronic data exchange

1 Scope
This part of IEC 61987 provides an
• operating list of properties (OLOP) for the description of the operating parameters and the
collection of requirements for a pressure measuring equipment, and
• device lists of properties (DLOP) for a range of pressure measuring equipment types
describing them.
The structures of the OLOP and the DLOP correspond with the general structures defined in
IEC 61987-11 and agree with the fundamentals for the construction of LOPs defined in
IEC 61987-10.
Aspects other than the OLOP, needed in different electronic data exchange processes
described in IEC 61987-10, will be published in IEC 61987-92 .
Libraries of properties and of blocks used in the concerned LOPs are listed in Annex C and
Annex D.
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 61360-1 (all parts), Standard data elements types with associated classification scheme
for electric items – Part 1: Definitions – Principles and methods
IEC 61987-10:2009, Industrial-process measurement and control – Data structures and
elements in process equipment catalogues – Part 10: List of Properties (LOPs) for Industrial-
Process Measurement and Control for Electronic Data Exchange – Fundamentals
IEC 61987-11:2012, 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
______________
Under consideration.
3 Terms and definitions
3.1 General
For the purposes of this document, the terms and definitions given in IEC 61987-10 and
IEC 61987-11, as well as the following apply.
3.2 Terms relating to measuring range
3.2.1
measuring range
range defined by two values of the measurand, or quantity to be supplied, within which the
limits of uncertainty of the measuring instrument are specified
Note 1 to entry: The measuring range is defined by two values, the lower range limit (LRL) and the upper range
limit (URL).
Note 2 to entry: Where a device can be adjusted to measure intervals within the specified measuring range or
offers fixed sub-ranges, the sub-range is defined by two values, the lower range-end value (LRV) and the upper
range-end value (URV).
[SOURCE: IEC 60050-311, 311-03-12, modified (notes added)]
3.2.2
span
algebraic difference between the upper and lower end values of the set measuring range
Note 1 to entry: If the device is set up to measure over the specified measuring range, then the span is the
algebraic difference between the upper range limit and the lower range limit: this value is often called the maximum
span.
[SOURCE: IEC 60050-311, 311-03-13 modified (“set” and note added)]
3.2.3
turndown ratio
ratio of the maximum span to the set span
3.2.4
zero adjustment
maximum value by which a pressure measurement can be offset to provide a reading of zero
on an output
3.3 Terms relating to performance
3.3.1
influence of alternating bilateral overpressure
maximum deviation (modulus) of zero pressure reading after applying successively the
maximum positive and then the maximum negative allowed overpressure successively to both
sides of a differential pressure transmitter at reference temperature
3.3.2
influence of alternating unilateral overpressure
maximum deviation (modulus) of zero pressure reading after applying successively the
maximum positive and then the maximum negative allowed overpressure to one side of a
differential pressure transmitter at reference temperature
3.3.3
influence of ambient temperature
for a pressure transmitter, combined influence on zero and span caused by a change in
ambient temperature over a given range, expressed as percentage of URL

– 8 – IEC 61987-13:2016 © IEC 2016
Note 1 to entry: Manufacturers of pressure transmitters currently express this influence in one of two ways:
– a change in ambient temperature over the range of –10 °C to + 60 °C,
– a change in ambient temperature of + 28 °C (+ 82,5 °F) with respect to reference ambient temperature.
Note 2 to entry: The corresponding properties are to be found in the CDD .
3.3.4
influence of static pressure on span
influence of static pressure applied on both sides of a differential pressure meter on span per
given pressure interval
Note 1 to entry: Manufacturers of pressure transmitters currently express this influence in one of two ways:
– per 100 bar,
– per 69 bar (1 000 psi).
Note 2 to entry: The corresponding properties are to be found in the CDD.
3.3.5
influence of static pressure on zero
influence of static pressure applied on both sides of a differential pressure meter on zero per
given pressure interval
Note 1 to entry: Manufacturers of pressure transmitters currently express this influence in one of two ways:
– per 100 bar,
– per 69 bar (1 000 psi).
Note 2 to entry: The corresponding properties are to be found in the CDD.
3.3.6
non-conformity
deviation from ideal behaviour for devices that have a non-linear input/output relationship,
determined from the curve plotted using the overall average of corresponding upscale and
downscale errors
Note 1 to entry: Non-conformity can be calculated and expressed in one of three ways:
– independent: line positioned so as to minimize the maximum deviation,
– terminal-based: line positioned so as to coincide with the actual characteristic curve at the upper and lower
range values,
– zero-based: line positioned so as to coincide with the actual characteristic curve at the lower range-value.
Note 2 to entry: The corresponding properties are to be found in the CDD.
3.3.7
non-linearity
deviation from ideal behaviour for devices that have a linear input/out relationship, determined
from the curve plotted using the overall average of corresponding upscale and downscale
errors
Note 1 to entry: Non-linearity can be calculated and expressed in one of three ways:
– independent: line positioned so as to minimize the maximum deviation,
– terminal-based: line positioned so as to coincide with the actual characteristic curve at the upper and
lower range-values,
– zero-based: line positioned so as to coincide with the actual characteristic curve at the lower range-value.
Note 2 to entry: The corresponding properties are to be found in the CDD.
______________
CDD: Common Data Dictionary.
3.3.8
span error
difference between the actual span and the maximum span when the input is at the upper
range limit, expressed as percentage of maximum span
3.3.9
span error for bilateral application of static pressure
difference between the actual span and the maximum span, expressed as percentage of
maximum span, when the same static pressure is applied on both sides of a differential
pressure transmitter
3.3.10
total error
sum of the total performance and the long term drift per annum, expressed as percentage of
span
Note 1 to entry: Manufacturers currently express total performance in several different ways, see notes to 3.3.11.
Note 2 to entry: The corresponding properties are to be found in the CDD.
3.3.11
total performance
square root of (non-linearity)² + (influence of ambient temperature)² + (influence of static
pressure on span)², expressed as percentage of span
Note 1 to entry: Manufacturers of pressure transmitters currently express total performance in one of two ways:
– for a change in ambient temperature over the range of –10 °C to + 60 °C and static pressure per 100 bar,
– for a change in ambient temperature of ± 28 °C (± 82,5 °F) with respect to reference ambient temperature and
static pressure per 69 bar (1 000 psi).
Note 2 to entry: Some manufactures include the (influence of static pressure on zero)² and also (influence of
overpressure up to rated pressure on span)² in the expression of total performance.
Note 3 to entry: The corresponding properties are to be found in the CDD.
3.3.12
zero point error
absolute error of a device under reference conditions, when the input is at the lower range
limit
3.3.13
zero point error for bilateral application of static pressure
deviation of pressure reading from zero when the same static pressure is applied on both
sides of a differential pressure transmitter
4 General
4.1 Overview
The LOPs provided by this document are intended for use in electronic data exchange
processes performed between any two computer systems. The two computer systems can
both belong to the same company or they can belong to different companies as described in
Annex C of IEC 61987-10:2009.
The OLOP for the family of pressure measuring equipment is to be found in Annex A while the
DLOPs of the individual pressure device types are to be found in Annex B.
Structural elements such as LOP type, block and property defined in this standard are
available in electronic form in the “Process automation” domain of the IEC Common Data
Dictionary (CDD).
– 10 – IEC 61987-13:2016 © IEC 2016
4.2 Depiction of OLOPs and DLOPs
4.2.1 General
The properties of the OLOPs and DLOPs used in this part of IEC 61987 have been created in
conformance with the requirements of the IEC 61360 series. As such, the structural elements,
properties and attributes to be found in the IEC Common Data Dictionary are normative.
4.2.2 Structural roles
The entities within a list of properties can have one of a number of structural roles.
a) Property
A property exists as a property only.
b) Ref. property + Block
A reference property connects a block to the superordinate block or LOP in which it is
embedded.
Properties and sub-blocks listed below a block name and placed one position to the right
are elements of the block. A block ends when another block name appears in the same
column as the block name or in any other column to its left.
The reference property has the same preferred name as the block to which it refers. All
attributes of these properties are available in the IEC Common Data Dictionary (CDD).
c) Cardinality property
A cardinality property is connected to the block which immediately follows it. The value of
the property (0 … n) in a transaction file determines the number of times the associated
block shall be repeated.
The preferred name of a cardinality property is with “Number of “ where is
derived from the name of the block with which it is associated.
In the transaction file (see examples in 4.3), it can be seen that a block has been repeated
twice:
• the cardinality property directly before the block has a value greater than 1,
• the name of the repeated block is extended by “_” followed by the repetition number.
Example:
If the block “Signal function” should be repeated 3 times, the following construction should occur in the
transaction file:
“number of signal function” has the value “3” .c ardinality property
“Signal function_1” .fi rst repeated block
“Signal function_2” .second repeated block
“Signal function_3”t .hird repeated block
d) Polymorphic control property
A polymorphic control property provides the means of introducing complete blocks of
properties describing different realizations of a particular device function, for instance
inputs and outputs. The property has a value list containing the designations of the blocks
that may be introduced. When in a transaction file a polymorphic control property is
assigned a value, the corresponding block follows (see examples in Tables 2 and 3).
The preferred name of a polymorphic property is “ type“ where is normally
the derived from name of the block with which it is associated.
e) Polymorphic control property with the fixed value: “”
This property appears directly behind the polymorphic block property. It is the same
property as the polymorphic control property for the block, but with the fixed value used to
create the block (see IEC 61987-10).

4.2.3 Marking of polymorphic areas
To help identify the possible polymorphic blocks in a list of properties in the printable version
of this standard a number with grey background can be added to the rightmost column of the
DLOP to indicate the properties associated with the block. It should be noted that in
transaction file, only the polymorphic block selected from value list of the polymorphic control
property would appear in the superordinate block.
Block Name (containing a polymorphic area)
Properties and sub- blocks
(of the common part, valid for all alternative cases)
Name of the polymorphic control property (which has a value list consisting
of exactly n values)
Block Name (for alternative case 1)
Properties and sub- blocks
(for alternative case 1)
Block Name (for alternative case 2)
Properties and sub- blocks
(for alternative case 2)
. . .
Block Name (for alternative case n)
Properties and sub – blocks
(for alternative case n)
IEC
Figure 1 – Structure of a polymorphic area
Every polymorphic area corresponds to a block, the structure of which is shown in Figure 1. A
polymorphic area begins with the name of this block containing this area. The block name can
be optionally followed by any number of additional properties or sub-blocks, provided that
they are valid for all alternative sub-blocks that can be generated by the polymorphism. The
polymorphic control property follows, by means of which one of the alternative blocks can be
selected. The alternative sub-blocks with their properties and sub-blocks are now listed one
after the other. The polymorphic area ends with the last property of the last sub-block that can
be selected using the value list of the polymorphic control property.
In order to facilitate the analysis of the LOPs, the following non-normative numerical marking
system can be used. A polymorphic area can have one or more subordinate, polymorphic
areas embedded in it. Table 1 shows a structure of the polymorphic areas. In Table 1, each
individual polymorphic area has been assigned a unique number. The areas have been
numbered in the sequence which they occur in the LOP, not according to their level in the
structure. The number of an embedded area has therefore a marking number greater than the
marking number of area in which it is embedded.
For example, the majority of the content of the “Output” block is generated from the
polymorphic area marked with the number 8, which starts at “Type of output” and can include
any of the specialisations which also are marked with the number 8. Each specialization also
includes in this case a further polymorphic area, “Assigned variable” which is marked by its
own number (>8).
– 12 – IEC 61987-13:2016 © IEC 2016
In Table 1, the missing marking numbers 3 to 7 are used in the DLOPs for flow measuring
equipment (see IEC 61987-12 ). The polymorphic areas marked by 9, 10, 11, 13 and 14 are
nested in the larger polymorphic area marked by 8.
Table 1 – Example of structure of polymorphic areas in the DLOPs
st Marking number of nested
Marking number of 1
nd
Block name polymorphic area (2
level polymorphic area
level)
Input
Measured variable
Type of measured variable 1
Auxiliary input
Type of auxiliary input 2
Output
Type of output 8
Analog current output 8
Assigned variable 8 9
Analog voltage output 8
Assigned variable 8 10
Frequency output 8
Assigned variable 8 11
Pulse output 8
Assigned variable 8 12
Manufacturer-specific 8
Assigned variable 8 13
Pneumatic/hydraulic output 8
Assigned variable 8 14
Performance
Performance variable
Type of performance variable 15

In the OLOP for pressure measuring equipment, there are two polymorphic areas without
nested sub-areas. Table 2 shows in which blocks they appear.
______________
Under consideration.
Table 2 – Example of structure of polymorphic areas in the OLOP
st
Marking number of 1 level
Block name
polymorphic area
Process case
High/single pressure side process case variables

Process case variables
Phase 1
Low pressure side process case variables

Process case variable
Phase 1
In order to make clear how the structural elements such as block, cardinality and
polymorphism can be implemented using the LOPs of this standard some examples are
provided in 4.3.
4.3 Examples of DLOP block usage
4.3.1 Block “Digital communication”
A pressure transmitter has a FOUNDATION fieldbus interface. It is designed for use in a safe
area and is equipped with a plug connector. The transmitter offers a number of function
blocks and can be configured as a LAS device if required. The “Digital Communication” block
might be configured as shown in Table 3 (… indicates a property or properties that have not
been used).
Table 3 – Example for “Digital Communication”
4 Assigned value Unit
Name of LOP type, block or property
Digital communication
number of digital communication interfaces 1
Digital communication interface
designation of digital communication interface FOUNDATION fieldbus
Communication protocol
type of protocol FOUNDATION fieldbus H1
device class Basic device
LAS functionality Yes
assigned LAS functionality Disabled
number of communication variables 2
Communication variable_1
designation of digital communication channel CHANNEL_1
assigned variable Pressure
type of communication variable Analog input
Communication variable_2
designation of digital communication channel CHANNEL_2
______________
In the CDD, block names start with a capital letter, property names with a lower case letter.

– 14 – IEC 61987-13:2016 © IEC 2016
4 Assigned value Unit
Name of LOP type, block or property
assigned variable Process temperature
type of communication variable Analog input

Physical layer
type of physical layer IEC 61158-2

number of baud rate settings 1

Baud rate setting
supported baudrate 31,25 kBit/s

number of wired communication interfaces 1

Wired communication interface
Electrical data of a bus powered device

base current 15 mA
fault current ≤ 9 mA
start-up current 16 mA
Electrical data for passive behaviour

rated voltage 24 V-
minimum voltage 9 V-
maximum voltage 36 V-
number of galvanic isolations
Galvanic isolation
galvanic isolation of electrical circuits Power, input, output

Line monitoring
reverse polarity protection Yes

short-circuit monitoring Yes
lead breakage monitoring Yes
Number of connectors
Connector
type of connector 7/8 – 16 UNC

style of connector Female
number of device integrations 2

Device integration_1
type of device driver EDD
version of device driver 1.00
Device integration_2
type of device driver CFF
version of device driver 1.00
Fieldbus parameters
number of function blocks 4
Function block_1
type of function block Analog input

quantity of function blocks 2
execution time of function block 45 ms

style of function block enhanced

notes on function block Enhancement: digital outputs for
process alarms, fail safe mode.

4 Assigned value Unit
Name of LOP type, block or property
Function block_2
type of function block PID
quantity of function blocks 1
execution time of function block 120 ms
style of function block standard
Function block_3
type of function block Input selector
quantity of function blocks 1
execution time of function block 35 ms
style of function block standard
Function block_4
type of function block Cascade signal characterizer
quantity of function blocks 1
execution time of function block 35 ms
style of function block manufacturer specific
notes on function block Enhancement: 51 pivot points;
blocks can be cascaded for larger
strapping tables
quantity of virtual communication relationships (VCRs) 44
methods capability Yes
description of methods Various calibration methods for
pressure and level
block instantiation capability Yes, max. 15

4.3.2 Sub-block “Dial indicator”
A pressure gauge designed for use in a safe area has a dial indicator with trip switches. The
“Dial indicator” sub-block, which is located in the block “Mechanical and electrical
construction” might be configured as shown in Table 4 (… indicates a property or properties
that have not been used).
Table 4 – Example for “Dial indicator”
5 Assigned value Unit
Name of LOP type, block or property
Mechanical and electrical construction

Structural design
Dial indicator
type of dial indicator Dial and pointer with electrical
contact
mounting location Direct mounting, back entry

Case
nominal size of case 108 mm
depth 62 mm
Material of case
designation of material Stainless steel
______________
In the CDD, block names start with a capital letter, property names with a lower case letter.

– 16 – IEC 61987-13:2016 © IEC 2016
5 Assigned value Unit
Name of LOP type, block or property

material code 308
reference standard for material code ANSI

material of window Safety glass

material of movement Stainless steel

degree of protection IP 54
enclosure type no/class Type 3

reference standard for enclosure type no/class NEMA

special mounting methods and conditions N/A

Dial
Number of scale ranges 2
Scale range_1
type of scale range Positive pressure

lower range end-value of dial 0

upper range end-value of dial 250

revolution value N/A
interval of scale 2,5 mbar
unit of scale mbar
scale arc 120°
colour of dial marking Black
Scale range_2
type of scale range Positive pressure

lower range end-value of dial 0

upper range end-value of dial 100

revolution value N/A
interval of scale 1
unit of scale in H 0
scale arc 120°
colour of dial marking Black
colour of display foreground N/A

colour of display background White

material of dial Aluminium
colour of display illumination No illumination

number of pointers
Pointer 1
material of pointer Aluminium
style of pointer Mark pointer
pointer position Centre
pointer adjustment Screw
zero and span adjustment Two screws

colour of display illumination No illumination
Contacts
quantity of contacts 2
electrical contact adjustment Set hand
style of contact reset Automatic decreasing

5 Assigned value Unit
Name of LOP type, block or property
trip point hysteresis 5 %
type of switch dead band Fixed
number of connection facilities 1
Connection facility
designation of connection facility N/A
description of connection facility Mounted on right of case
type of signal termination Junction box
type of wire device extension User supplied
num
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

Loading comments...