配电线自动化终端装置技术领域本发明涉及配电线路自动化终端装置。 该装置包括主板，其包括主通信模块，并且通过从负载开关获取和分析数据或执行从上位装置接收到的命令的功能，将数据发送到主设备; 和多个I / O板，分别包括从通信模块，并接收用于监视和控制负载开关的开关操作的各个点的测量值。 主通信模块和从通信模块相互发送和接收用于内部通信的通信协议帧，但是通信协议帧被形成为发送和接收具有相同报头的帧。 协议帧包括报头字段; 数据字段 和校验和字段。 头域包括用于设置起始位字段，帧长度字段，目的地址字段，源地址字段和请求命令的功能字段; 用于设置请求命令的细节的子功能字段; 以及用于数据帧的分割传输的对象索引字段。

Provided with a master communications module, obtaining data from the load break switch and analyzes and transmits it to the host device, or the main board for performing a function equivalent to analyze a command received from the host device; And, each provided with a slave communication module, and a plurality of I / O boards and the opening and closing operations of the load break switch, receives the measured values ​​of various points in order to monitor and control, the master communication module and the slave communication module but transmit and receive a communication protocol frame set for the internal communication between said communication protocol frame is configured to transmit and receive a frame with the same header, and the communication protocol frame includes a header field, data field, and a checksum field, the header field start bit field, a frame length field, a destination address field, source address field, an object for the function field, a division transmission of the sub-function field, and a data frame for setting the details of the request command for setting a request command the distribution line automated terminal device is configured to include an index field is provided.