BS EN IEC 62541-15:2025

1   Scope This document describes a safety communication layer (services and a protocol) for the exchange of SafetyData using IEC 62541 mechanisms. 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  This document targets controller-to-controller communication. However, easy expandability
     to other use-cases (e.g. OPC UA field level communication) has already been considered
     in the design of this document. 


    NOTE 2  This document 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 document defines mechanisms for the transmission of safety-relevant  messages  among participants within a network using OPC UA technology in accordance with the
  requirements of the [IEC 61508](/search?q=IEC%C2%A061508) series and [IEC 61784‑3](/search?q=IEC%C2%A061784%E2%80%913) for functional safety. These mechanisms can be used in various industrial applications
  such as process control, manufacturing, automation, and machinery. 
This document provides guidelines for both developers and assessors of compliant devices
  and systems. 

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