IEC-TR-61131-4-2004.pdf
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1、 TECHNICAL REPORT IEC TR 61131-4 Second edition 2004-07 Programmable controllers Part 4: User guidelines Reference number IEC/TR 61131-4:2004(E) Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For example, IEC 34-1 is now referred
2、to as IEC 60034-1. Consolidated editions The IEC is now publishing consolidated versions of its publications. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incorporating amendment 1 and the base publication incorporating amendments 1
3、 and 2. Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects current technology. Information relating to this publication, including its validity, is available in the IEC Catalogue of publi
4、cations (see below) in addition to new editions, amendments and corrigenda. Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication, as well as the list of publications issued, is also available from the following
5、: IEC Web Site (www.iec.ch) Catalogue of IEC publications The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to search by a variety of criteria including text searches, technical committees and date of publication. On-line information is also available on recently issued pu
6、blications, withdrawn and replaced publications, as well as corrigenda. IEC Just Published This summary of recently issued publications (www.iec.ch/online_news/ justpub) is also available by email. Please contact the Customer Service Centre (see below) for further information. Customer Service Centr
7、e If you have any questions regarding this publication or need further assistance, please contact the Customer Service Centre: Email: custserviec.ch Tel: +41 22 919 02 11 Fax: +41 22 919 03 00 TECHNICAL REPORT IEC TR 61131-4 Second edition 2004-07 Programmable controllers Part 4: User guidelines PRI
8、CE CODE IEC 2004 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
9、de Varemb, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch XF For price, see current catalogue Commission Electrotechnique Internationale International Electrotechnical Commission -,-,- 2 TR 61131-4 IEC:2004(E) CON
10、TENTS FOREWORD.5 INTRODUCTION.7 1 General 8 1.1 Scope and object.8 1.2 Normative references 9 1.3 Use of this report.9 2 Terms and definitions .10 3 General recommendations for installation.11 3.1 Environmental conditions 11 3.2 Field wiring11 3.3 Electromagnetic compatibility 12 3.4 User system mar
11、kings .13 4 PLC in functional safety applications 13 4.1 Functional safety and safety-related-system concept.13 4.2 Using a PLC in a safety-related application .15 4.3 Requirements on PLCs in a safety-related system.16 4.4 Integration of PLC into a safety-related system .16 Annex A (informative) Ove
12、rview of normative parts of IEC 6113119 A.1 Overview of IEC 61131-119 A.2 Overview of IEC 61131-226 A.3 Overview of IEC 61131-359 A.4 (blank)88 A.5 Overview of IEC 61131-588 A.6 (blank)100 A.7 Overview of IEC61131-7.100 A.8 (blank)107 Annex B (informative) Conformity to IEC 61131 and product certifi
13、cation.108 B.1 General 108 B.2 Conformity to standards .108 B.3 Declaration of conformity and certification 109 B.4 The inter-relation of standards to laws in European Community109 B.5 CE-marking of PLCs in the European Union .111 B.6 Transition periods.113 B.7 Other juristictions .114 B.8 Reference
14、 documents.115 Annex C (informative) Use of PLC programming languages and examples116 C.1 Preamble116 C.2 Advance planning.116 C.3 Structure and organization .117 C.4 Use of PLC languages120 -,-,- TR 61131-4 IEC:2004(E) 3 C.5 User Defined Function Block (DFB) 127 C.6 Language implementation.130 Figu
15、re 1 Object of user guidelines8 Figure 2 SRS in risk reduction concept 14 Figure 3 Event tree analysis for deployment of SRS.18 Figure A.1 Basic functional structure of a PLC system .21 Figure A.2 PLC hardware model 22 Figure A.3 Typical interface/port diagram of a PLC system 23 Figure A.4 Type test
16、 EUT configuration32 Figure A.5 Digital I/O parameters.35 Figure A.6 Immunity zones.46 Figure A.7 Programmable Controller System (PLC system)59 Figure A.8 Software model.62 Figure A.9 Combination of programmable controller language elements 64 Figure A.10 Examples of function usage 69 Figure A.11 Fu
17、nction block instantiation examples.70 Figure A.12 Sequential function chart 71 Figure A.13 Function block and program declarations for configuration example79 Figure A.14 The four programming languages82 Figure A.15 Boolean OR examples .86 Figure A.16 Programming elements of Function Block Diagram
18、language 87 Figure A.17 Top-down and bottom-up programming.88 Figure A.18 Scope of IEC 61131-5.88 Figure A.19 Relationship of the communication model to IEC 61131-2 and IEC 61131-3 90 Figure A.20 Programmable controller communication model 91 Figure A.21 Example of communication control in FBD langu
19、age.99 Figure A.22 Example of a fuzzy control in FBD program.101 Figure A.23 Example of ramp curve membership functions 102 Figure A.24 Defuzzification program block .102 Figure A.25 Example of singleton terms.102 Figure C.1 Program structure overview 118 Figure C.2 Program structure with detail 119
20、 Figure C.3 The structured program plan for brewing process automation with various languages.121 Figure C.4 Example of a program in IL language122 Figure C.5 Example of a program in ST language 123 Figure C.6 Example of a control program in LD language.124 Figure C.7 An example of a control program
21、 in FBD language 125 Figure C.8 A control program in SFC 126 Figure C.9 A DFB for valve control.127 Figure C.10 DFB for valve actuation 128 Figure C.11 DFB for alarm actuation129 -,-,- 4 TR 61131-4 IEC:2004(E) Table 1 Environmental conditions 11 Table 2 Installation rules: earthing measures .12 Tabl
22、e 3 Installation rules: EMC 12 Table 4 SIL of demand mode safety functions14 Table 5 SIL of continuous mode safety functions .14 Table A.1 Summary of programmable functions .24 Table A.2 General conditions for tests .32 Table A.3 Operating ambient air temperature of PLC systems .33 Table A.4 Emissio
23、n limits.45 Table A.5 Criteria to prove the performance of a PLC-system against EMC disturbances .47 Table A.6 Voltage drops and interruptions .47 Table A.7 Shock protection requirements for open and enclosed equipment 50 Table A.8 Temperature limits .52 Table A.9 Data type declaration features .67
24、Table A.10 Location and size prefix features for directly represented variables67 Table A.11 Variable usage.68 Table A.12 Examples of function block I/O variable usage .70 Table A.13 Step features .72 Table A.14 Transition and transition conditions73 Table A.15 Declaration of action 75 Table A.16 St
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