CLC/TC 9X
| Project No. | LVS EN 50657:2017 |
|---|---|
| Title | This standard specifies the process and technical requirements for the development of software for programmable electronic systems for use in rolling stock applications. Software that is part of signalling equipment (railway control and protection applications) installed on board trains is outside the scope of this standard. This standard is applicable exclusively to software and the interaction between software and the system of which it is part. This standard applies to safety related as well as non safety related software including for example - application programming, - operating systems, - support tools, - firmware. Application programming comprises high level programming, low level programming and special purpose programming (for example: Programmable logic controller ladder logic). This standard also addresses the use of pre-existing software and tools. Such software may be used, if specific requirements on pre-existing software and for tools are fulfilled. Software developed according to a valid version of EN 50128 is considered as compliant to this standard. Software previously developed in accordance with any version of EN 50128 is also considered as compliant and not subject to the requirements on pre-existing software. This standard considers that modern application design often makes use of generic software that is suitable as a basis for various applications. Such software is then configured by data, algorithms, or both, for producing the executable software for the application. This standard applies to all software as well as specific requirements for application data or algorithms will be given. This standard is not intended to be retrospective. It therefore applies primarily to new developments and only applies in its entirety to existing systems if these are subject to major modifications. For minor changes separate requirements in this standard defines how to apply. However, application of this standard during upgrades and maintenance of existing software is recommended. |
| Registration number (WIID) | 61081 |
| Scope | This standard specifies the process and technical requirements for the development of software for programmable electronic systems for use in rolling stock applications. Software that is part of signalling equipment (railway control and protection applications) installed on board trains is outside the scope of this standard. This standard is applicable exclusively to software and the interaction between software and the system of which it is part. This standard applies to safety related as well as non safety related software including for example - application programming, - operating systems, - support tools, - firmware. Application programming comprises high level programming, low level programming and special purpose programming (for example: Programmable logic controller ladder logic). This standard also addresses the use of pre-existing software and tools. Such software may be used, if specific requirements on pre-existing software and for tools are fulfilled. Software developed according to a valid version of EN 50128 is considered as compliant to this standard. Software previously developed in accordance with any version of EN 50128 is also considered as compliant and not subject to the requirements on pre-existing software. This standard considers that modern application design often makes use of generic software that is suitable as a basis for various applications. Such software is then configured by data, algorithms, or both, for producing the executable software for the application. This standard applies to all software as well as specific requirements for application data or algorithms will be given. This standard is not intended to be retrospective. It therefore applies primarily to new developments and only applies in its entirety to existing systems if these are subject to major modifications. For minor changes separate requirements in this standard defines how to apply. However, application of this standard during upgrades and maintenance of existing software is recommended. |
| Status | Atcelts |
| ICS group | 35.240.60 35.080 |