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 mor

设计了PLC 与上位机监控系统最经济、可靠的通讯方案,采用功能强大的开发工具C6 Builder 编制上位机通讯程序。-Design of the PLC and PC control system is the most economical and reliable communications solutions, the use of powerful development tools C6 Builder PC communication program preparation.

西门子PLC实例教程,PLC 的主要生产厂家,西门子PLC 的分类,数字量控制系统梯形图设计方法-Siemens PLC tutorial examples of major PLC manufacturers, Siemens PLC, digital control system ladder design method