DIN EN 61158-4-12-2013 工业通信网络.现场总线规范.第4-12部分:数据链路层协议规范.12型元件.(IEC 61158-4-12-2010).英文版本EN 61158-4-12-2012,仅在CD-ROM上
Industrial communication networks - Fieldbus specifications - Part 4-12: Data-link layer protocol specification - Type 12 elements (IEC 61158-4-12:2010); English version EN 61158-4-12:2012, only on CD-ROM