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BSI BS EN 61784-3-18:2011+A2:2021

Industrial communication networks. Profiles -- Functional safety fieldbuses. Additional specifications for CPF 18
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BSI BS EN 61784-3-18:2011+A2:2021

Industrial communication networks. Profiles -- Functional safety fieldbuses. Additional specifications for CPF 18

PUBLISH DATE 2021
PAGES 72
BSI BS EN 61784-3-18:2011+A2:2021

This part of the IEC 61784-3 series specifies a safety communication layer (services and protocol) based on CPF 18 of IEC 61784-2 and IEC 61158 Type 22. It identifies the principles for functional safety communications defined in IEC 61784-3 that are relevant for this safety communication layer.

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.

SDO BSI: British Standards Institution
Document Number EN 61784-3-18
Publication Date July 9, 2021
Language en - English
Page Count 72
Revision Level 2
Supercedes
Committee GEL/65/3
Publish Date Document Id Type View
July 31, 2011 BS EN 61784-3-18:2011 Revision
July 9, 2021 BS EN 61784-3-18:2011+A2:2021 Consolidated
March 31, 2017 BS EN 61784-3-18:2011+A1:2017 Consolidated