The paper describes the implementation method of the software and hardware in detail ; explains the sulphuration technology in production of rubber and how to control sulphuration machine by plc ; discusses the principle , current situation and development trend of the dcs ; recommends the serial communication in industrial and how to realize it in delphi ; analyzes the communication protocols of series of lg ' s master - k10 plc and on the base of which , realized the communication between upper - computer and low computer ; discusses the realization flows of control system on upper - computer in detail , the software and hardware of module every design ; introduces the functions and realization of query software on client computer 详细论述了控制系统硬件及软件的实现方法；阐述了橡胶生产中的硫化工艺以及如何用plc对硫化机进行程序控制；讨论了集散控制系统的原理、研究现状及发展趋势；介绍了工业控制领域中的串行通信以及如何在delphi中实现串口通信；分析了lg公司master - k10系列plc的通信协议，并在此基础上实现了上位机与下位机的通信；详细讨论了上位机控制系统的实现流程、各模块的软硬件设计；详细介绍了客户端查询软件的功能及实现。
