DIN EN IEC 61158-2 E:2022-11 草案 工業通信網絡 現場總線規范 第2部分:物理層規范和服務定義 (IEC 65C/1099/CDV:2021)
Draft Document - Industrial communication networks - Fieldbus specifications - Part 2: Physical layer specification and service definition (IEC 65C/1099/CDV:2021); English version prEN IEC 61158-2:2021