模拟量处理.ppt

模拟量处理,,,,,,,,,,,,,,,,,,,,,,,,,,液位变送器,,,高液位,低液位,,,,,,,,,,模拟量模块的用途,,,......................................,,量程卡,,,,S7-300模拟量模块的寻址,IM,256to270,336to350,352to366,368to382,304to318,320to334,272to286,288to302,发送,槽口号234567891011,,电源模块,CPU,,模拟量模块SM335输入,,,,,,,,模拟模块SM335输出,,,,,模拟输入模块SM331,,,,模拟量的表达方式和测量值的分辨率,20,21,22,23,24,25,26,27,28,29,210,211,212,213,214,VZ,16进制.,位值,十进制,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,位的序号,单位,位的分辨率符号,1,1,1,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,15,*,0或1,,,,,,,,,,在不同测量范围下模拟量的表达方式,范围,超上限,超上界,额定范围,超下界,超下限,测量范围10V,电压例如,11.759,11.758910.0004,10.007.50-7.5-10.00,-10.0004-11.759,32767,3251127649,276480-6912-6913-27648,-27649-32512,-32513,,练习3.1配置模拟量模块SM335,,,,练习3.2配置模拟量模块SM331,,,练习3.3控制罐的液位,,,,,,,,,,,,,,,,,,,,,,,,,,,,液位传感器,,,,,,练习3.4结构化的极限监视功能,,,,,,,,,,,,,,,,,,,,,,,,,,,FB120,ACTV,HL,LL,HYS,QH,QL,LIMIT,模拟变量的实际值,HL,LL,HYS,HYS,QH,QL,t,功能,符号,,,LO_LIM,HI_LIM,,