1783-SRKIT1783-SRKIT1783-SRKIT为了提高PLC控制系统工作的可靠性，可以专门设置一个定时器，作为监控程序部分，对系统的运行状态进行检测。若程序运行能正常结束，则该定时器就立即被清零；若程序运行发生故障，如出现死循环等，该定时器在设定的时间到就无法清零，此时PLC发出报警信号。在设计应用程序时，使用这种方法来实现对系统各部分运行状态的监控。如果用PLC来控制某一对象时，编制程序时可定义一个定时器来对这一对象的运行状态进行监视：该定时器的设定时间即为这一对象工作所需的***大时间；当启动该对象运行时，同时也启动该定时器。若该对象的运行程序在规定的时间结束工作，发出一个工作完成信号，使该定时器清零，说明这一对象的运行程序正常；否则，属运行不正常，发出报警信号或停机信号。监控程序的梯形图如图7所示。图7中定时器T1为检测元件，X001为控制对象动作信号，X002为动作完成信号，M2为报警或停机信号。假设被控对象的运行程序完成一次循环需要50s，则定时器K值可取510（T1为100ms定时器）。当X001=1时，被控对象运行开始，T1开始计时；如在规定的时间内被控对象的运行程序能正常结束，则X002动作，M1复位，定时器T1被清零，等待下一次循环的开始；若在规定时间没有发出被控对象运行完成的动作信号，则判断为故障，T1的触点闭合，接通M2发出报警信号或停机信号。【***】【诚信】【创新】【合作】【共赢】厦门泰尼电气有限公司【产品质量】原装进口***【检测标准】按原厂标准【产品质保】1年【快递时间】24小时到【联系我们】＆业务经理：小黄＆洽谈电话：0592-6809319/18950191386＆商务***：2917675397＆传真（FAX)：0592-6890859（请注明，01006收）＆公司全称：厦门泰尼电气有限公司＆公司地址：厦门市海沧区海沧街道滨湖一里1号楼GIDDINGS&LEWISM.1300.6042R1GIDDINGS&LEWIS401-34209-00*NEW*G&LGiddingsLewisGTypeBoringmillOperati***ManualExpeditedshipping***ailableGiddings&Lewis5010336500502-0290600ScanGIDDINGS&LEWIS502-02881-10NSFP5020288110Giddings&LewisColonialBroachServiceManualVAD1066Giddings&LewisACInputInterface502-02959-00NEWGiddings&LewisPartProgramManualGemini-DSys60Giddings&Lewis502-02621-05ServoResistorBoardGIDDINGS&LEWIS502-02884-00USPP5020288400GIDDINGS&LEWIS401-57268-30USPP4015726830GIDDINGS&LEWIS502-02881-10NSPP5020288110GIDDINGS&LEWISM-211-0369-000USPPM2110369000G&LGiddingsLewisPMC400CNCDiagnosticManualGiddings&Lewis501-03210-00502-02822-00D/ACONV.GIDDINGS&LEWIS502-03518-22R1OUTPUTMODULE,NIBGIDDINGS&LEWISCPUBOARD501-03201-01/50​2-02813-01Giddings&LewisMdlE&GTableTypeOperatingManualGiddings&LewisMdlETableTypeRepairPartsManualGIDDINGS&LEWISSTATICRAM501-03204-50/50​2-02816-58G&LCNC800MGiddingsLewisProgrammingManualExpeditedshipping***ailableG&LS12GiddingsLewisS-12MillMillingMachineManualGIDDINGSLEWISD***-100502-04051-00TERMINALCONVERTERGIDDINGS&LEWISRS232INTERFACEPROGRAMMERC***OLEG&LCNC800ControlManualGiddingsLewisManualExpeditedshipping***ailableGIDDINGS&LEWISD/ACONVERTOR501-03210-00/50​2-02822-00501-03210-00/50​2-02822-00GIDDINGS&LEWISD/ACONVERTORExpeditedshipping***ailableGIDDINGS&LEWIS502-02869-20TTLInterfaceExpeditedshipping***ailableGiddings&LewisDivideby2Board,#31-50296NOne-dayshipping***ailableGIDDINGS&LEWISTTLINTERFACE502-02869-00(596)GIDDINGS&LEWISRS232INTERFACEPROGRAMMERC***OLE(597GIDDINGS&LEWIS503-15246-00USPP5031524600GIDDINGS&LEWIST3232-BS509-5FTNSFPT3232BS5095FTGIDDINGS&LEWIS401-34463-00NSFP4013446300G&LGiddingsLewisCNCLathew/NumeriPath802-LManualGiddings&LewisDiMilInstruction&PartsManualsGiddings&Lewis65SeriesVTLPartsManualGIDDINGS&LEWISM.1300.7655NSFPM13007655GIDDINGS&LEWIS502-02814-16DCInputExpeditedshipping***ailableG&LGiddings&Lewis800502-02882-00CNCTerminatorGiddingsandLewisServoInterface501-03882-00G&LCNCGiddingsandLewisValveDriverBoardCNC501-02960-00G&LGiddings&Lewis502-02824-00MPXTRIACBDGiddings&LewisPartsManualforUprightDrills:Giddings&LewisHydraulicClampHFIFixture503-25984GiddingsLewisG&L100CWinslowDrillGrinderManualExpeditedshipping***ailableGIDDINGS&LEWISFS054593-0107MICROSCANBOARDGiddings&Lewis50103025505020273750MPXDiodeBoardGiddings&LewisMonitorScanModule502-02906-00-DI-Giddings&LewisACInputCard502-02959-00-DI-Giddings/Lewis986-15VFNumeriCenterRepairPartManualEK-402GIDDINGS&LEWISFS054593-0105X-AXISCPUMODULEGIDDINGS&LEWIST3232-BS509-4FTNSFPT3232BS5094FTGIDDINGS&LEWISSCANMONITOR5020290600(651)Giddings&LewisMdlE3"&4"TableTypeOperateManualGiddings&LewisMdlE3"&4"TableTypeProgramManualBus***anFRS-R-60,Qty9,Giddings&Lewis501-91794-03Giddings&LewisPICO-101/PiC0-101InputModule*LNC*Expeditedshipping***ailableGiddings&LewisPICO-102PiC0-102OutputModule*LNC*Expeditedshipping***ailableGIDDINGS&LEWIS502-02959-00ACInputExpeditedshipping***ailableGIDDINGS&LEWIS502-02906-00ScanMonitorExpeditedshipping***ailableGIDDINGS&LEWIS502-04051-00NSFP5020405100Giddings&LewisDCOutputInterface502-02954-01NEWGiddings&LewisDCOutputInterface502-02954-00Giddings&LewisDCOutput502-02954-01501-03427-01GIDDINGS&LEWIS502-03266-00USPP5020326600GIDDINGS&LEWIS502-03076-00NSPP5020307600GiddingsLewisG&LHMCHBM8000BCNCServiceManualExpeditedshipping***ailableG&LGiddingsLewis10VNumericenterPartsManualExpeditedshipping***ailableGiddingsLewisG&LNumeripath8000BOperatorsGuideExpeditedshipping***ailableG&LGiddingsLewis10VNumericenterPartsManualExpeditedshipping***ailableG&LGiddingsLewisPC-40PC-50ProgInstructionManualExpeditedshipping***ailableG&LGiddingsLewisNumeriMiteCNCTheoryAdjOpsManualExpeditedshipping***ailableG&LGiddingsLewisMdlHFloorTypeBoringMillManualExpeditedshipping***ailableG&LGiddingsLewisNumeridrillControlServiceManualExpeditedshipping***ailableG&LGiddingsLewisAutomaticBarChuckingLatheManualGiddings&LewisDCInput501-03202-00502-02814-16GIDDINGS&LEWIS502-03673-00NSFP5020367300GIDDINGS&LEWIS502-03076-00USPP5020307600GIDDINGS&LEWIS502-04051-00USPP5020405100GIDDINGS&LEWISFL200398USPPFL200398GIDDINGS&LEWIST3232-BS509-3FTNSFPT3232BS5093FTGIDDINGS&LEWIS502-03673-00NSPP5020367300Giddings&Lewis350F&360FRepairPartsManualGiddings&Lewis340T(350T)Parts&Ins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