1、 TECHNICAL REPORT IECTR 61131-4Second edition2004-07Programmable 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 to a
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7、 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 IECTR 61131-4Second edition2004-07Programmable controllers Part 4: User guidelines PRICE CODE
8、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 de Varem
9、b, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch XF For price, see current catalogueCommission Electrotechnique InternationaleInternational Electrotechnical Commission 2 TR 61131-4 IEC:2004(E) CONTENTS FOREWORD.5
10、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 wiring.11 3.3 Electromagnetic compatibility .12 3.4 User system markings .13 4
11、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) Overview of no
12、rmative parts of IEC 61131.19 A.1 Overview of IEC 61131-1.19 A.2 Overview of IEC 61131-2.26 A.3 Overview of IEC 61131-3.59 A.4 (blank).88 A.5 Overview of IEC 61131-5.88 A.6 (blank).100 A.7 Overview of IEC61131-7.100 A.8 (blank).107 Annex B (informative) Conformity to IEC 61131 and product certificat
13、ion .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 Community.109 B.5 CE-marking of PLCs in the European Union .111 B.6 Transition periods.113 B.7 Other juristictions .114 B.8 Referenc
14、e documents.115 Annex C (informative) Use of PLC programming languages and examples.116 C.1 Preamble.116 C.2 Advance planning.116 C.3 Structure and organization .117 C.4 Use of PLC languages.120 TR 61131-4 IEC:2004(E) 3 C.5 User Defined Function Block (DFB) .127 C.6 Language implementation.130 Figur
15、e 1 Object of user guidelines.8 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 t
16、est EUT configuration.32 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
17、A.11 Function block instantiation examples.70 Figure A.12 Sequential function chart .71 Figure A.13 Function block and program declarations for configuration example.79 Figure A.14 The four programming languages.82 Figure A.15 Boolean OR examples .86 Figure A.16 Programming elements of Function Bloc
18、k Diagram 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
19、 in FBD language .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
20、 with detail .119 Figure C.3 The structured program plan for brewing process automation with various languages.121 Figure C.4 Example of a program in IL language.122 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 o
21、f a control program 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 actuation.129 4 TR 61131-4 IEC:2004(E) Table 1 Environmental conditions .11 Table 2 Installation rules: earthing
22、 measures .12 Table 3 Installation rules: EMC .12 Table 4 SIL of demand mode safety functions.14 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 .
23、33 Table A.4 Emission 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 decl
24、aration features .67 Table A.10 Location and size prefix features for directly represented variables.67 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 conditions .73 Table A.15 Declaration of action .
