江西省电力公司江西省电力公司 低压电力用户集中抄表系统低压电力用户集中抄表系统 集中器上行通信规约集中器上行通信规约 (试行版) 2 1 适用范围...................................................................................................................1 2 术语............................................................................................................................1 3 通讯规约细则...........................................................................................................1 3 .1 规约层次描述.....................................................................................................1 3 .2 物理层.................................................................................................................2 3 .3 链路层.................................................................................................................2 3 .4 应用层.................................................................................................................2 4 系统运行模式...........................................................................................................2 4 .1 前置机运行模式（短信方式除外）.................................................................2 4 .2 集中器运行模式(短信方式除外)......................................................................2 5 帧结构........................................................................................................................3 5 .1 参考模型..............................................................................................................3 5 .2 字节格式..............................................................................................................3 5 .3 帧格式..................................................................................................................3 5 .4 链路层......................................................................................................
