CEI EN 50159 Railway applications - Communication, signalling and processing systems - Safety-related communication in transmission systems
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Comitato Elettrotecnico Italiano
Railway applications - Communication, signalling and processing systems - Safety-related communication in transmission systems
N EN 50159
Annotation
This European Standard is applicable to safety-related electronic systems using for digital communication purposes a transmission system which was not necessarily designed for safety-related applications and which is
- under the control of the designer and fixed during the lifetime, or
- partly unknown or not fixed, however unauthorised access can be excluded, or
- not under the control of the designer, and also unauthorised access has to be considered.
Both safety-related equipment and non safety-related equipment can be connected to the transmission system.
This standard gives the basic requirements needed to achieve safety-related communication between safety-related equipment connected to the transmission system.
This European Standard is applicable to the safety requirement specification of the safetyrelated equipment connected to the transmission system, in order to obtain the allocated safety integrity requirements.
Safety requirements are generally implemented in the safety-related equipment, designed according to EN 50129. In certain cases these requirements may be implemented in other equipment of the transmission system, as long as there is control by safety measures to meet the allocated safety integrity requirements.
