文章简要介绍了DCS系统结构及本系统中现场控制站的组成， 重点阐述了该系统中网络通信任务的设计和实现过程， 并给出了主要的程序代码。实测表明， 程序运行稳定可靠，系统性能达到了设计要求。-The article briefly introduced the structure of the DCS system and the system controller in the composition of the scene, focusing on the task of Network Communication System Design and Implementation of the process, and gives the main program code. Measured show that the program is running stable and reliable system performance to meet the design requirements.