EN 62056-42:2002
电量测量.计数器读数,电费和负载控制的数据交换.第42部分:定向连接异步数据交换规程和物理层服务 IEC 62056-42:2002
Electricity Metering - Data Exchange for Meter Reading, Tariff and Load Control Part 42: Physical Layer Services and Procedures for Connection-Oriented Asynchronous Data Exchange