Overall structure of three-stage-computer-control system at the port of Wanzhai

This paper introduced system architecture of the three-stage-computer-control-system at the port of Wanzhai in Xuzhou, software structure and its design flow. This system adopted the international advanced techniques, such as multi-stage-computer-control system, timely network management system and graphic monitoring. The software structure and the hardware structure of the system are given herein. In the programming, stage program mode is used to decrease greatly the executive time of the system.