Home / Standards / GB/T 16657.2-2008 GB/T 16657.2-2008 Active Industrial communication networks - Fieldbus specifications - Part 2: Physical layer specification and service definition 工业通信网络 现场总线规范 第2部分: 物理层规范和服务定义 Standard Type GBT ICS 25.040 CCS N10 Status 现行 Issue Date 2008-06-30 Implementation 2009-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A