网络传来的控制命令经过网络接口转发到串口，中控主机通过串口接收命令进行操作，并且设置 IP 地址、网关地址和分组号都是通过串口进行的，因此串口调试是监控程序调试的第一步。-network control commands sent through the network to transmit serial interface, China controlled by the mainfr a me to receive orders for serial operation, and set the IP address, Gateway addresses and, through a serial port, and because of serial debugging monitoring program debugging is the first step.