2016DIN EN 61804-4:2016 Function blocks (FB) for process control and Electronic Device Description Language (EDDL) - Part 4: EDD interpretation (IEC 61804-4:2015); English version EN 61804-4:2016
1970DIN EN 61804-4 E:2014-03 Function blocks (FB) for process control and Electronic Device Description Language (EDDL) - Part 4: EDD interpretation