DIN EN 61158-2-2015 工业通讯网络.现场总线规范.第2部分:物理层规范和服务定义(IEC 61158-2-2014);英文版本EN 61158-2-2014,仅用于CD-ROM
Industrial communication networks - Fieldbus specifications - Part 2: Physical layer specification and service definition (IEC 61158-2:2014); English version EN 61158-2:2014, only on CD-ROM