Historical
DS/EN 61784-3-3:2017
Industrial communication networks - Profiles - Part 3-3: Functional safety fieldbuses - Additional specifications for CPF 3
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 part1 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.
Danish Standards [ds]