BENTLYNEVADA138607-01*3500/22MBENTLYNEVADA138607-01*3500/22MBENTLYNEVADA138607-01*3500/22MPC机的控制程序如下：PrivateSubForm_Load()'窗体加载过程mPort=1'通信控件选用PC机的串口1ttings="9600,o,8,1"'设定串口1的波特率为9600bps，奇校验，8位数据位，1位停止位MSComm1.PortOpen=True'打开串口1terval=1000'定时器1的定时值为1sTimer1.Enabled=True'启动定时器1EndSubFunctioncom(aAsString,bAsInteger)'向PLC读写寄存器内容函数BufferCount=0'清空串口的接收缓冲区MSComm1.Output=a'将要发送的字符串从串口发送出去DoDoEventsLoopUntilBufferCount>=b'等待PLC的响应字符至一定位数com=put'读入串口接收到的字符串EndFunctionPrivateSubTimer1_Timer()'定时读取Y0、Y1的值以判断电机当前状态a="%01#RCP2Y0000Y0001**"+Chr(13)'定义读Y0、Y1值的通信字符串s=com((a),9)'读Y0、Y1的当前值IfMid(s,7,1)="1"Then'返回字符串中第7位为1表示Y0接通，电机正转cmdzz.Enabled=False'电机已正转，禁止操作正转按钮但可操作反转按钮cmdfz.Enabled=Trueption="电机当前状态：正转"ElseIfMid(s,8,1)="1"Then'反转cmdfz.Enabled=False'电机反转，禁止操作反转按钮但可操作正转按钮cmdzz.Enabled=Trueption="电机当前状态：反转"ElseIfMid(s,7,1)="0"AndMid(s,8,1)="0"Then'停机cmdfz.Enabled=True'电机已停止，可操作正转或反转按钮cmdzz.Enabled=Trueption="电机当前状态：停止"EndIfEndSubPrivateSubcmdzz_Click()'正转指令a="%01#WCSR01001**"+Chr(13)'定义将R100置1，启动正转的通信字符串s=com((a),7)EndSubPrivateSubcmdfz_Click()'反转指令a="%01#WCSR01011**"+Chr(13)'定义将R101置1，启动反转的通信字符串s=com((a),7)EndSubPrivateSubcmdtj_Click()'停机指令a="%01#WCSR01021**"+Chr(13)'定义将R102置1使电机停转的通信字符串s=com((a),7)EndSub运行上述程序，既可在PC机上实现对电机正反转以及停止的控制，也可在现地通过SB0、SB1和SB2按钮实现对电机的控制；既可在现地启动或停止电机转动，也可在PC机上实现停机或电机转动控制。由于PC机定时读取PLC内部Y0、Y1的值，所以在现地操作改变电机的工作状态时，在PC机程序中可显示出当前电机的工作状态并禁止相应的操作，真正实现了PC与PLC的联机控制。6.结束语上述设计已在实践中应用。经验证，可在此基础上，增加联机通信故障自动检测报警功能，利用数据读写命令实现联机大批量数据传送，根据现地来的状态信息增加PC机动画演示功能，从而使PC与PLC的联机控制程序更加完善，控制界面更加形象。根据上述原理，结合PC与PLC控制的特点，可在其它控制场合使用上述方法实现双机甚至多机联机控制。J0175BQAutomationEquipManagerDisplaySWPkgJ0175BRAutomationEquipmentManagerDisplaySWLicJ0175DBAutoEquipmentManagerPW-NBJ0175DDAutoEquipmentManagerDisplayPW-NBJ0175DFAutoEquipmentManagerPW-FBJ0175DHAutoEquipmentManagerDisplayPW-FBJ0175DKAutoEquipmentManagerPW-CJ0175DMAutoEquipmentManagerDisplayPW-CJ0175GRAP50OperatingSystemSWLicJ0175GSAP50ApplicationSWLicKitJ0175GTAP50HistorianSWLicKitJ0175GUDiskMirroringSWLicJ0175GWSMDHAP50SWLicJ0175GXSystemMonitor50SWLicJ0175GYIntegControlConfigurator50SWLicJ0175GZHistorian2000SWLicJ0175HAHistorian1500SWLicJ0175HBCompoundSummaryAccess50SWLicJ0175HCOperatorMessageInterface50SWLicJ0175HDPhysicalPropertiesLibrary50SWLicJ0175HEDeviceMonitor50SWLicJ0175HGFORTRANCompilerSWLicJ0175HHINFORMIXOn-LineDevelopmentEnvSWLicJ0175HJSpreadsheet50SWLicJ0175HKCMathLibrary50SWLicJ0175HNDECnetConnectivitySWLicJ0175HRWP50OperatingSystemSWLicJ0175HSSMDHWP50SWLicJ0175HYReportWriter50SWLicJ0175HZAP50GeneralSWLicKitJ0175JB50SeriesOperatingSystem4UserLicJ0175JC50SeriesOperatingSystem20UserLicJ0175JESpreadsheetUserLicJ0177AAAdditionalDM/FoxView(51Series)SWLic(5User)J0177ABAdditionalDM/FoxView(51Series)SWLic(10User)J0177ACAdditionalDM/FoxView(51Series)SWLic(20User)J0177ADAdditionalDM/FoxView(51Series)SWLic(50User)J0177AEAdditionalDM/FoxView(51Series)SWLic(100User)J0177AFGEFanucPLCI/ODriverSWLic-WindowsWSJ0177AG760/762ControllerI/ODriverSWLic-AW70J0177AHAdditionalFoxViewDMForThe70SeriesJ0177AJBCIIMaco4000I/ODriverSWLic-AW70J0177AK760/762ControllerI/ODriverSWLic-AW51J0177ALGEFanucI/ODriverSWLic-AW51J0177ANAP51DStationLic(Nodebus)J0177APAW51DStationLicense(Ethernet)J0177AQAW51DStationLic(Nodebus)J0177ARWP51DStationLicense(Ethernet)J0177ASWP51DStationLic(Nodebus)J0177AUMICROPackControlStationSWPkgJ0177AWINFORMIXForXP/NTSWLicJ0177AXINFORMIXV10forWindowsSWLicenseJ0180SUV4.2FoxDOC,DOSPC,w/Windows3.1OrNTJ0180SVV4.2FoxDOCForSunOS4.1,Solaris2.xJ0180SXV4.1.1FoxDOCForSunOS4.1J0180SYV4.1.1FoxDOCForSunSolaris2.xJ0180SZV4.1.1FoxDOCForDOSPCWithWindows3.1J0200AUPW-NB761SeriesConfiguratorSWPkgJ0200AVPW-NB761SeriesConfiguratorSWLicJ0200AWPW-SSI761SeriesConfiguratorSWPkgJ0200AXPW-SSI761SeriesConfiguratorSWLicJ0200AYAP20761SeriesConfiguratorSWPkgJ0200AZAP20761SeriesConfiguratorSWLicJ0200BARedundantAllen-BradleyGatewaySWPkgJ0200BBRedundantAllen-BradleyGatewaySWLicJ0200CLSunSPARCAISSWLicJ0200CMRemoteAlarmMessageDispatcherPkgJ0200CNRemoteAlarmMessageSerVPkgJ0200CPRemoteAlarmMessageDispatcherLicJ0200CQRemoteAlarmMessageServerLicJ0200CUDisplayUtilitiesSWLicJ0200CVDisplayUtilitiesSWPkgJ0200CXRemoteEquipmentMtgControlLicenseJ0200CYRemoteEquipmentMtgRemoteLicenseJ0200DAPW-NBSIPOPSYSSWLicJ0200DBPW-NBSIPOPSYSSWPkgJ0200DCPW-NBSIPOPSYSSWLic,RedundantSIPJ0200DDPW-NBSIPOPSYSSWPkg,RedundantSIPJ0200DEPW-NBINI15SWLicJ0200DFPW-NBINI15SWPkgJ0200DGPW-NBCP30SWLicJ0200DHPW-NBCP30SWPkgJ0200DKControlProcessorSizingWorksheet(V3.x)J0200DLReportWriter20SWLicJ0200DMReportWriter20SWPkgVersion2.2.1aJ0200DVPWBackupUtilitiesDisketteSWPkgJ0200EEAP20HostingV3.xToV4.xLicJ0200EFAW50HostingV3.xToV4.xLicJ0200EGAW50HostingV3.xToV4.xLicJ0200EHAP51HostingV3.xToV4.xLicJ0200EJAW51HostingV3.xToV4.xLicJ0200EKPWHostingV3.xToV4.xLicJ0200ELAP20HostingV2.xToV4.xLicJ0200EMAP20HostingV3.xToV4.XLic(Adv)J0200ENAP50HostingV3.xToV4.XLic(Adv)J0200EPAW50HostingV3.xToV4.XLic(Adv)J0200EQAP51HostingV3.xToV4.XLic(Adv)J0200ERAW51HostingV3.xToV4.XLic(Adv)J0200ESPWHostingV3.xToV4.XLic(Adv)J0200ETAP20HostingV2.xToV4.XLic(Adv)J0200EUPWHostingV2.xToV4.xLicJ0200E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