4、置 传感器AbstractThispassagefirstlyintroducetheproducation,developmentofProgrammableLogicController(CalledPLCforshort),andits'basicallyfuncationandcharacteristic. ThenaccordingtotheprincipleandtheexcellentqualityofthePLC,ItcanusePLCtocontroldifferent kinds of liquid.Thisco
5、ntrolling process can make asingle circuit or make in succession,ithasthefunctionofbreakingofftheelectricityand storing inmemory,itcanrestoreelectricitythenbreakofftheelectricitysteptocontinuemoving.Atworktime,itcanfinishonecircleat least.Accomplished productand movingbe