一种天线自动控制系统的控制程序，分主机（CCU）和从机（RCU）两部分。两者通过485接口通信，通信协议符合HDLC规范。-It is a referable control programme for a kind of Antenna Automatic Control System, which contains two parts of CCU(Master) and RCU(Slave). The hardware interface is RS485, and the comm