DesignofPLCTimerSystemBasedonFPGALiKejian,LiuTong,CaiQizhongSchoolofElectronicInformationandControlEngGuangxiUniversityofTechnologyLiuzhouGuangxiChinalijian6262@;srk04I26@;******@Abstract-AimingatthedesignofthesmallPLCtimersystem,basedontheanalysisofoperationalcharacteristicsofPLCtimerandtheprocessofPLCusertimerprogramandthedatatransmissionrequirementsofPLCuserprogramexecutionmoduleandthetimer,amethodwhichappliestheFPGAParallelalgorithmtodesigningsmallPLCtimersystem,,timingunit,,,,thestatetransitiondiagramoftimercontrolmodule,thetimingdiagramofuserprogramexecutionmoduleoperatingontimer,,勿做商业用途Keywords-PLetimersystem;FPGA;dynamicin/ormationcode;paralle/operation;statetransition;资料个人收集整理,-ontroller(PLC)[1][2],,suchastimingsampling,timinginspection,timingscanning,-programmablehardwaretiming,[3][4],andtheirtimingunittypicallyhasthreekindslike1ms,,,,timingunit,
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