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针对宁夏某厂老式的双储液罐,在原来手动控制的基础上进行改造,提出了基于组态王和西门子S7-200PLC的控制系统设计方案。该控制系统采用工控机和组态王组成上位机,西门子S7-200PLC及扩展模块组成下位机,可以对现场采集到的数据进行实时监控和集中管理,方便工程人员随时查看。现场运行表明:方案合理,系统运行稳定,取得了良好的控制效果。
Aiming at the old double storage tank of a factory in Ningxia, the control system based on Kingview and Siemens S7-200PLC is proposed based on the original manual control. The control system adopts industrial computer and configuration king to form a host computer. The Siemens S7-200PLC and expansion module are composed of the lower computer, which can monitor and centralize the data collected on the spot in real time, which is convenient for the engineers to view at any time. Field operation showed that: the program is reasonable, the system is stable and has achieved good control effects.