Industrial communication Networks - Fieldbus specifications - Part 4-2: Data-link layer protocol specification - Type 2 elements (IEC 61158-4-2:2019); English version EN IEC 61158-4-2:2019, only on CD-ROM
工业通信网络.现场总线规范.第4-2部分:数据链路层协议规范.第2类元件(IEC 61158-4-2-2019);英文版EN IEC 61158-4-2:2019 仅CD-ROM