SIST EN 61131-5:2002

Programmable controllers -- Part 5: Communications

Specifies communication aspects of a programmable controller.

Speicherprogrammierbare Steuerungen -- Teil 5: Kommunikation

Contrôleurs programmables -- Partie 5: Communications

La CEI 61131-5:2000 spécifie les aspects des automates programmables (AP) relatifs à la communication. Elle spécifie, du point de vue d'un AP, la manière dont chaque périphérique peut communiquer avec un AP en tant que serveur et la manière dont l'AP peut communiquer avec chaque périphérique. Elle spécifie, en particulier, le comportement de l'AP lorsqu'il fournit des services pour le compte d'autres périphériques et les services que le programme application de l'AP peut demander aux autres périphériques. La présente version bilingue (2012-08) correspond à la version anglaise monolingue publiée en 2000-11.
Cette publication doit être lue conjointement avec la série CEI 61131.

Programmable controllers - Part 5: Communications

General Information

• Status: Published
• Publication Date: 31-Aug-2002
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.240.50 - IT applications in industry
• Technical Committee: MKP - Industrial-process measurement and control
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Sep-2002
• Due Date: 01-Sep-2002
• Completion Date: 01-Sep-2002
• Ref Project: EN 61131-5:2001 - Programmable controllers - Part 5: Communications

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61131-5:2002
01-september-2002
Programmable controllers - Part 5: Communications
Programmable controllers -- Part 5: Communications
Speicherprogrammierbare Steuerungen -- Teil 5: Kommunikation
Contrôleurs programmables -- Partie 5: Communications
Ta slovenski standard je istoveten z: EN 61131-5:2001
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.240.50 Uporabniške rešitve IT v IT applications in industry
industriji
SIST EN 61131-5:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61131-5:2002

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SIST EN 61131-5:2002
EUROPEAN STANDARD EN 61131-5
NORME EUROPÉENNE
EUROPÄISCHE NORM February 2001
ICS 25.040.40;25.240.50
English version
Programmable controllers
Part 5: Communications
(IEC 61131-5:2000)
Contrôleurs programmables Speicherprogrammierbare Steuerungen
Partie 5: Communications Teil 5: Kommunikation
(CEI 61131-5:2000) (IEC 61131-5:2000)
This European Standard was approved by CENELEC on 2001-01-01. CENELEC members are bound
to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61131-5:2001 E

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SIST EN 61131-5:2002
EN 61131-5:2001 - 2 -
Foreword
The text of document 65B/411/FDIS, future edition 1 of IEC 61131-5, prepared by SC 65B, Devices,
of IEC TC 65, Industrial-process measurement and control, was submitted to the IEC-CENELEC
parallel vote and was approved by CENELEC as EN 61131-5 on 2001-01-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2001-10-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-01-01
This part is to be read in conjunction with the other parts of EN 61131.
Annexes designated "normative" are part of the body of the standard.
In this standard, annexes A, B and ZA are normative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61131-5:2000 was approved by CENELEC as a European
Standard without any modification.
__________

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SIST EN 61131-5:2002
- 3 - EN 61131-5:2001
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60050-351 1998 International Electrotechnical Vocabulary--
Part 351: Automatic control
IEC 61131-1 1992 Programmable controllers EN 61131-1 1994
Part 1: General information
IEC 61131-2 1992 Part 2: Equipment requirements and tests EN 61131-2 1994
+ corr. December 1997
+ A11 1996
+ corr. December 1997
+ A12 2000
IEC 61131-3 1993 Part 3: Programming languages EN 61131-3 1993
ISO/IEC 2382-1 1993 Information technology - Vocabulary --
Part 1: Fundamental terms
ISO/IEC 9506-1 1990 Industrial automation systems - EN 29506-1 1993
Manufacturing message specification
Part 1: Service definition
ISO/IEC 9506-2 1990 Part 2: Protocol specification EN 29506-2 1993

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SIST EN 61131-5:2002

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SIST EN 61131-5:2002
INTERNATIONAL IEC
STANDARD
61131-5
First edition
2000-11
Programmable controllers –
Part 5:
Communications
Automates programmables –
Partie 5:
Communications
 IEC 2000  Copyright - all rights reserved
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 the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http://www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
XD
International Electrotechnical Commission
For price, see current catalogue

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SIST EN 61131-5:2002
– 2 – 61131-5  IEC:2000(E)
CONTENTS
Page
FOREWORD . 6
Clause
1 Scope . 8
2 Normative references . 8
3 Definitions. 9
4 Symbols and abbreviations. 11
5 Models . 11
5.1 PC network communication model. 11
5.2 PC functional model . 12
5.3 PC hardware model. 14
5.4 Software model . 14
6 PC communication services. 15
6.1 PC subsystems and their status . 15
6.2 Application specific functions. 22
7 PC communication function blocks . 28
7.1 Overview of the communication function blocks . 28
7.2 Semantic of communication FB parameters. 29
7.3 Device verification. 34
7.4 Polled data acquisition . 38
7.5 Programmed data acquisition . 41
7.6 Parametric control. 51
7.7 Interlocked control . 54
7.8 Programmed alarm report . 61
7.9 Connection management. 69
7.10 Example for the use of communication function blocks . 73
8 Compliance and implementer specific features and parameters . 76
8.1 Compliance. 76
8.2 Implementation specific features and parameters . 77
Annex A (normative) Mapping to ISO/IEC 9506-5. 78
Annex B (normative) PC behavior using ISO/IEC 9506-2. 98
Figure 1 – Scope of this part of IEC 61131. 8
Figure 2 – PC communication model. 12
Figure 3 – Programmable controller functional model . 13
Figure 4 – Programmable controller hardware model. 14
Figure 5 – PC software model. 15
Figure 6 – Programmable controller power supply . 19
Figure 7 – Type description of status information . 21
Figure 8 – Interlocked control timeline. 24
Figure 9 – Function REMOTE_VAR . 31

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SIST EN 61131-5:2002
61131-5  IEC:2000(E) – 3 –
Figure 10 – Principle of status signalling . 32
Figure 11 – Timing diagram of the ERROR and STATUS outputs . 32
Figure 12 – STATUS function block . 34
Figure 13 – USTATUS function block . 35
Figure 14 – Timing diagram of the STATUS function block . 35
Figure 15 – State diagram of STATUS function block . 36
Figure 16 – State diagram of USTATUS function block. 37
Figure 17 – READ function block . 39
Figure 18 – Timing diagram of READ function block. 39
Figure 19 – State diagram of READ function block . 40
Figure 20 – Programmed data acquisition data flow . 41
Figure 21 – USEND function block . 42
Figure 22 – URCV function block . 42
Figure 23 – Timing diagram of USEND and URCV function blocks . 43
Figure 24 – State diagram of USEND function block. 43
Figure 25 – State diagram of URCV function block . 45
Figure 26 – BSEND function block . 47
Figure 27 – BRCV function block . 48
Figure 28 – Timing diagram of BSEND and BRCV function blocks. 48
Figure 29 – State diagram of BSEND function block. 49
Figure 30 – State diagram of BRCV function block . 50
Figure 31 – WRITE function block. 52
Figure 32 – Timing diagram of WRITE function block . 53
Figure 33 – State diagram of WRITE function block . 53
Figure 34 – SEND function block . 55
Figure 35 – RCV function block. 56
Figure 36 – Timing diagram of SEND and RCV function blocks . 57
Figure 37 – State diagram of SEND function block . 58
Figure 38 – State diagram of RCV function block . 60
Figure 39 – NOTIFY function block . 62
Figure 40 – ALARM function block . 63
Figure 41 – Timing diagram of ALARM function block . 64
Figure 42 – State diagram of NOTIFY function block . 65
Figure 43 – State diagram of ALARM function block. 67
Figure 44 – CONNECT function block . 69
Figure 45 – Timing diagram of CONNECT function block . 70
Figure 46 – State diagram of CONNECT function block. 71
Figure 47 – Example in function block diagram language . 76
Table 1 – Status presenting entities . 16
Table 2 – PC summary status . 17
Table 3 – Status of I/O subsystem . 18
Table 4 – Status of processing unit . 18

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SIST EN 61131-5:2002
– 4 – 61131-5  IEC:2000(E)
Table 5 – Status of power supply . 19
Table 6 – Status of memory. 19
Table 7 – Status of communication subsystem . 20
Table 8 – Status of implementer specific subsystem . 20
Table 9 – Presentation of status information . 21
Table 10 – Device verification features . 23
Table 11 – Data acquisition features . 23
Table 12 – Control features . 24
Table 13 – Alarm reporting features . 25
Table 14 – Startable and stoppable units . 25
Table 15 – Meaning of I/O State . 26
Table 16 – I/O state. 26
Table 17 – Execution and I/O control features. 26
Table 18 – Loadable units. 27
Table 19 – Application program transfer features . 27
Table 20 – Connection management features . 28
Table 21 – Overview of the communication function blocks . 28
Table 22 – Semantic of communication FB parameters . 30
Table 23 – Values of the SCOPE parameter. 31
Table 24 – Value and interpretation of the STATUS output . 33
Table 25 – Transitions of the STATUS state diagram . 36
Table 26 – Action table for STATUS state diagram. 36
Table 27 – Transitions of USTATUS state diagrams. 37
Table 28 – Action table of USTATUS state diagram . 37
Table 29 – Transitions of the READ state diagram . 40
Table 30 – Action table for READ state diagram. 41
Table 31 – Transitions of the USEND state diagram. 44
Table 32 – Action table for USEND state diagram . 44
Table 33 – Transitions of URCV state diagrams . 45
Table 34 – Action table of URCV state diagram. 46
Table 35 – Transitions of the BSEND state diagram . 49
Table 36 – Action table for BSEND state diagram . 50
Table 37 – Transitions of BRCV state diagrams . 51
Table 38 – Action table of BRCV state diagram . 51
Table 39 – Transitions of the WRITE state diagram . 54
Table 40 – Action table for WRITE state diagram . 54
Table 41 – Transitions of the SEND state diagram . 58
Table 42 – Action table for SEND state diagram. 59
Table 43 – Transitions of RCV state diagrams . 60
Table 44 – Action table of RCV state diagram . 61
Table 45 – Transitions of the NOTIFY state diagram . 65
Table 46 – Action table for NOTIFY state diagram. 66
Table 47 – Transitions of the ALARM state diagram . 68

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SIST EN 61131-5:2002
61131-5  IEC:2000(E) – 5 –
Table 48 – Action table for ALARM state diagram . 68
Table 49 – Transitions of the CONNECT state diagram . 72
Table 50 – Action table for CONNECT state diagram . 73
Table 51 – Table titles and relevant tables for compliance. 76
Table 52 – Implementation specific features and parameters . 77
Table A.1 – Type description mapping . 81
Table A.2 – Mapping of the SCOPE and SC_ID parameter . 81
Table A.3 – Size prefix of direct representation . 82
Table A.4 – Transition mapping of the STATUS state diagram . 84
Table A.5 – Action mapping for STATUS state diagram. 84
Table A.6 – Transition mapping of USTATUS state diagram . 84
Table A.7 – Action mapping of USTATUS state diagram . 84
Table A.8 – Transition mapping of the READ state diagram. 85
Table A.9 – Action mapping for READ state diagram. 85
Table A.10 – Transition mapping of the USEND state diagram . 86
Table A.11 – Action mapping for USEND state diagram . 86
Table A.12 – Transition mapping of URCV state diagram . 86
Table A.13 – Action mapping for URCV state diagram. 87
Table A.14 – Transition mapping of the BSEND state diagram . 87
Table A.15 – Action mapping for BSEND state diagram. 88
Table A.16 – Transition mapping of BRCV state diagram . 88
Table A.17 – Action mapping for BRCV state diagram . 89
Table A.18 – Transition mapping of the WRITE state diagram . 90
Table A.19 – Action mapping for WRITE state diagram . 90
Table A.20 – Transition mapping of the SEND state diagram. 90
Table A.21 – Action mapping for SEND state diagram . 91
Table A.22 – Transition mapping of RCV state diagram. 91
Table A.23 – Action mapping of RCV state diagram . 92
Table A.24 – Transition mapping of the NOTIFY state diagram. 94
Table A.25 – Action mapping for NOTIFY state diagram. 94
Table A.26 – Transition mapping of the ALARM state diagram . 95
Table A.27 – Action mapping for ALARM state diagram. 95
Table A.28 – Transitions of the CONNECT state diagram. 96
Table A.29 – Action mapping for CONNECT state diagram. 96
Table A.30 – Implementation specific features and parameters . 97
Table B.1 – CreateProgramInvocation service defaults. 98
Table B.2 – Program Invocation service defaults for I/O State parameter . 98
Table B.3 – Implementation specific features and parameters . 99

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SIST EN 61131-5:2002
– 6 – 61131-5  IEC:2000(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PROGRAMMABLE CONTROLLERS –
Part 5: Communications
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61131-5 has been prepared by subcommittee 65B: Devices, of IEC
technical committee 65: Industrial-process measurement and control.
The text of this standard is based on the following documents:
FDIS Report on voting
65B/411/FDIS 65B/420/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
This part should be read in conjunction with the other parts of IEC 61131. IEC 61131 consists
of the following parts under the general title: Programmable controllers.
Part 1:1992, General information.
Part 2:1992, Equipment requirements and tests.
Part 3:1993, Programming languages.
Part 4:1994, User guidelines (published as technical report IEC TR 61131-4)
Part 5:2000, Communications
Part 8:2000, Guidelines for the application and implementation of programming languages
(published as technical report IEC TR 61131-8)

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SIST EN 61131-5:2002
61131-5  IEC:2000(E) – 7 –
Annexes A and B form an integral part of this standard.
Annex C is for information only.
Where a conflict exists between this and other IEC standards (except basic safety standards),
the provisions of this standard should be considered to govern in the area of programmable
controllers and their associated peripherals.
The committee has decided that the contents of this publication will remain unchanged until
2006. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
A bilingual version of this standard may be issued at a later date.

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SIST EN 61131-5:2002
– 8 – 61131-5  IEC:2000(E)
PROGRAMMABLE CONTROLLERS –
Part 5: Communications
1 Scope
This part of IEC 61131 specifies communication aspects of a programmable controller. It
specifies from the viewpoint of a PC how any device can communicate with a PC as a server
and how a PC can communicate with any device. In particular, it specifies the behavior of the
PC as it provides services on behalf of other devices and the services the PC application
program can request from other devices. It is not intended to speci
...