DIN EN IEC 61804-4 : 2021 Title: Devices and integration in enterprise systems - Function blocks (FB) for process control and electronic device description language (EDDL) - Part 4: EDD interpretation (IEC 61804-4:2020); English version EN IEC 61804-4:2020 Year: 2021 Publisher: DIN Media GmbH Availability: Within 1-2 working days