FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Functional safety
3.1 What is functional safety?
3.2 Safety functions and safety-related systems
3.3 Example of functional safety
3.4 Challenges in achieving functional safety
4 IEC 61508 - Functional safety of E/E/PE safety-related systems
4.1 Objectives
4.2 E/E/PE safety-related systems
4.3 Technical approach
4.4 Safety integrity levels
4.5 Example of functional safety revisited
4.6 Parts framework of IEC 61508
4.7 IEC 61508 as a basis for other standards
4.8 IEC 61508 as a stand-alone standard
4.9 Further information
Annex A (informative) List of frequently asked questions from
IEC "functional safety" zone