This paper introduces the machine structure of controlled five-bar mechanism and its theory of control, and puts forward a plan that develops the program of the control system by VC base on PMAC.

The system is composed of three subsystems, they are the signal monitor subsystem, the PLC (the Programmable Logical Controller) one and the host computer control ore.

So combined with use of software, the module is applied for multimedia control device or other front-end equipment in video monitor.