说明：  本课题应用DELPHI作为开发环境设计了针对对西门子公司的S7-200PLC的串口调试程序，并能在界面上显示多时段交通灯控制系统PLC控制程序所分配的存储区，实时读取各存储区的当前状态。
(This application development environment design for a DELPHI of Siemens company in the serial of S7-200 PLC program, and can debugging interface display more time traffic control system, PLC program allocation of storage area, read the current state of the store.)