说明：  本规约参考中华人民共和国电力行业标准DL/T equ、IEC60870102、1996所规 定的传输规约。 本标准采用IEC60870-5-2 第5节所定义的非平衡传输规则，即传输过程的启动仅限 于某一固定点，在本规约中主站端为启动端，而电能计量数据终端设备位于计数站，始 终为从动站。
(The code reference of the people s Republic of China electric power industry standard DL/T equ, IEC60870, 5, 102, 1996. The transmission protocol. This standard uses unbalanced transmission rules defined in section fifth of IEC60870-5-2, which is the only start the transmission process At a fixed point in the code in the master station, as the starting end, and the electric energy metering data terminal equipment in the counting station, beginning From the end station.)