By designing the software of data acquisition and control system (DPU routine) which running on the field I/O control master station, this paper well improved the problem such as low ratio of using auto control loop of the DCS.

• 通过设计运行在现场I/O控制主站上的数据采集与控制应用程序(DPU软件),很好的改进了DCS在实际应用中自动回路投运率低问题;