摘要本文是介绍采用三菱FX2-40MRCD4511PLC编写数字显示电子钟,显示器采用七段LED显示器,共接入6位,从左至右分别表示秒、时、分的个、时位
采用BCD码驱动器CD4511把PLC输出的时、分、秒等显示BCD码变换成对应的显示器所要求的7段驱动信号
由于显示位数较多,故显示采用动态显示方式,PLC的输出类型为晶体管源输出(正逻辑),其中输出端子Y0~Y3输出第一组显示器的BCD信号,Y10~Y13输出第二组显示器的BCD信号,Y4~Y7依次为各组显示器的选通信号
关键词:PLC,驱动器,晶体管AbstractThisarticleisintroduced40MRCD4511PLC-writeFX2mitsubishielectricclock,thedisplayUSESdigitaldisplayof7LEDdisplay,twogroupsofeightaccess,includingthefirstgroup(above)isusedtoindicatethefourhours,points,fromlefttoright,saidthetenmonths,10daysofbitsandbytes,
UsingthePLCCD4511BCDdriveroutputmonth,day,andclassificationofconvertingBCDdisplaymonitorrequestedofsevendriversignal
Becauseofthat,itshowsmoredigitsdisplaymodebyusingdynamic,PLCoutputtypetransistorsourceoutput(for),whichislogicalY0outputterminalsoutputfirstgroupY3~Y10signalmonitorBC