TACAN beacon is expensive. It can not meet the needs of training and learning. The use of simulation cabinet can effectively training the personnel who operate TACAN. There are two modes of TACAN beacon switch. They are automatic and manual. There is a SCM system in the simulation cabinet. The SCM system collects the state of switches, and controls the display. It communicates with the host computer through the serial port. The computer controls the SCM through the VB program. It can simplify the writing of SCM programming and the function expanding. The method is feasible effective by the experiment, and the simulation cabinet has practical value.