BS EN 61784-3-3:2017

FOREWORD
0 Introduction
1 Scope
2 Normative references
3 Terms, definitions, symbols, abbreviated terms
   and conventions
4 Overview of FSCP 3/1 (PROFIsafe[TM])
5 General
6 Safety communication layer services
7 Safety communication layer protocol
8 Safety communication layer management
9 System requirements
10 Assessment
Annex A (informative) - Additional information
        for functional safety communication
        profiles of CPF 3
Annex B (informative) - Information for assessment
        of the functional safety communication profiles
        of CPF 3
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their corresponding
         European publications

Defines a safety communication layer (services and protocol) based on CPF 3 of IEC 61784-1, IEC 61784-2 (CP 3/1, CP 3/2, CP 3/4, CP 3/5 and CP 3/6) and IEC 61158 Types 3 and 10. It also identifies the principles for functional safety communications defined in IEC 61784-3 that are relevant for this safety communication layer.

This part of the IEC 61784-3 series specifies a safety communication layer (services and protocol) based on CPF 3 of IEC 61784-1, IEC 61784-2 (CP 3/1, CP 3/2, CP 3/4, CP 3/5 and CP 3/6) and IEC 61158 Types 3 and 10. It identifies the principles for functional safety communications defined in IEC 61784-3 that are relevant for this safety communication layer. This safety communication layer is intended for implementation in safety devices only.

NOTE 1 It does not cover electrical safety and intrinsic safety aspects. Electrical safety relates to hazards such as electrical shock. Intrinsic safety relates to hazards associated with potentially explosive atmospheres.

This part 1 defines mechanisms for the transmission of safety-relevant messages among participants within a distributed network using fieldbus technology in accordance with the requirements of IEC 61508 series2 for functional safety. These mechanisms may be used in various industrial applications such as process control, manufacturing automation and machinery.

This part provides guidelines for both developers and assessors of compliant devices and systems.

NOTE 2 The resulting SIL claim of a system depends on the implementation of the selected functional safety communication profile within this system – implementation of a functional safety communication profile according to this part in a standard device is not sufficient to qualify it as a safety device.