1、 TECHNICAL REPORT IEC TR 61131-4 Second edition2004-07 Programmable controllers Part 4:User guidelines Reference number IEC/TR 61131-4:2004(E)Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without licens
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8、x:+41 22 919 03 00 Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-TECHNICAL REPORT IECTR 61131-4 Second edition2004-07 Programmable controllers Part 4:User guidelines PRICE COD
9、E 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 Varemb,PO B
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11、d by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-2 TR 61131-4 IEC:2004(E)CONTENTS 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 recom
12、mendations 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 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
13、 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 normative 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 IE
14、C 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 certification.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 Europ
15、ean 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 Reference 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
16、 Use of PLC languages.120 Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-TR 61131-4 IEC:2004(E)3 C.5 User Defined Function Block(DFB).127 C.6 Language implementation.130 Figure 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 h
