BS EN 50128:2001 - Page 3

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 | Status: Superseded, Withdrawn

1 Scope 1.1 This European Standard specifies procedures and technical requirements for the development of 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 may range from the very critical, such as safety signalling to the non-critical, such as management information systems. These systems may be implemented using dedicated microprocessors, programmable logic controllers, multiprocessor distributed systems, larger scale central processor systems or other architectures.