DIN EN 61158-6-9-2015 工业通讯网络.现场总线规范.第6-9部分:应用层协议规范.9型元件(IEC 61158-6-9-2014).英文版本EN 61158-6-9-2014,仅为CD-ROM
Industrial communication networks - Fieldbus specifications - Part 6-9: Application layer protocol specification - Type 9 elements (IEC 61158-6-9:2014); English version EN 61158-6-9:2014, only on CD-ROM