DIN EN 61511-1:2005 Functional safety - Safety instrumented systems for the process industry sector - Part 1: Framework, definitions, system, hardware and software requirements (IEC 61511-1:2003 + Corrigendum 2004); German version EN 61511-1:2004
2019DIN EN 61511-1:2019 Functional safety - Safety instrumented systems for the process industry sector - Part 1: Framework, definitions, system, hardware and application programming Requirements (IEC 61511-1:2016 + COR1:2016 + A1:2017); German version EN 61511-1:2017 + A1:2017
2017DIN EN 61511-1/A1:2017 Functional safety - Safety instrumented systems for the process industry sector - Part 1: Framework, definitions, system, hardware and application programming requirements (IEC 65A/844/FDIS:2017); German version EN 61511-1:2017/FprA1:2017
2012DIN EN 61511-1 E:2012 Draft Document - Functional safety - Safety instrumented systems for the process industry sector - Part 1: Framework, definitions, system, hardware and software requirements (IEC 65A/622/CD:2012)
2005DIN EN 61511-1:2005 Functional safety - Safety instrumented systems for the process industry sector - Part 1: Framework, definitions, system, hardware and software requirements (IEC 61511-1:2003 + Corrigendum 2004); German version EN 61511-1:2004