DIN EN 61970-453 : 2020 Title: Energy management system application program interface (EMS-API) - Part 453: Diagram layout profile (IEC 61970-453:2014 + A1:2018); English version EN 61970-453:2014 + A1:2019 Year: 2020 Publisher: DIN Media GmbH Availability: Within 1-2 working days