西门子S7-200PLC模拟量输出在节水灌溉中的应用

Application of Siemens S7-200PLC Analog Value Output in Water-Saving Irrigation

摘要: 该文介绍了西门子S7-200PLC模拟量输出值的对应关系、模拟量输出的处理方法，展望了其在农业节水灌溉中的应用前景，可编程控制器在现代农业中的作用有待进一步拓展。

Abstract: Correlation and processing method of siemens S7-200PLC analog value output were introduced.Its application in agricultural water saving irrigation was prospected.Useness of PLC in modern agriculture would be broadened in future.