NEMA IA2.4 : 2005

FOREWORD
INTRODUCTION
1 General
  1.1 Scope and object
  1.2 Normative references
  1.3 Use of this report
2 Terms and definitions
3 General recommendations for installation
  3.1 Environmental conditions
  3.2 Field wiring
  3.3 Electromagnetic compatibility
  3.4 User system markings
4 PLC in functional safety applications
  4.1 Functional safety and safety-related-system
      concept
  4.2 Using a PLC in a safety-related application
  4.3 Requirements on PLCs in a safety-related system
  4.4 Integration of PLC into a safety-related system
Annex A (informative) Overview of normative parts of
      IEC 61131
  A.1 Overview of IEC 61131-1
  A.2 Overview of IEC 61131-2
  A.3 Overview of IEC 61131-3
  A.4 (blank)
  A.5 Overview of IEC 61131-5
  A.6 (blank)
  A.7 Overview of IEC61131-7
  A.8 (blank)
Annex B (informative) Conformity to IEC 61131 and
      product certification
  B.1 General
  B.2 Conformity to standards
  B.3 Declaration of conformity and certification
  B.4 The inter-relation of standards to laws in
      European Community
  B.5 CE-marking of PLCs in the European Union
  B.6 Transition periods
  B.7 Other juristictions
  B.8 Reference documents
Annex C (informative) Use of PLC programming languages
      and examples
  C.1 Preamble
  C.2 Advance planning
  C.3 Structure and organization
  C.4 Use of PLC languages
  C.5 User Defined Function Block (DFB)
  C.6 Language implementation
Figures
Tables

Introduces the end-users of Programmable Controller (PLC) to the IEC 61131 series, and to assist the end-users in their selection and specification of their PLC equipment.