BS EN 50128:2011+A2:2020 - Page 4

Railway applications. Communication, signalling and processing systems. Software for railway control and protection systems. | Status: Superseded, Withdrawn

1 Scope 1.1 This European Standard specifies the process and technical requirements for the development of software for programmable electronic systems for use in railway control and protection applications. It is aimed at use in any area where there are safety implications. These systems can be implemented using dedicated microprocessors, programmable logic controllers, multiprocessor distributed systems, larger scale central processor systems or other architectures.