1756-CNBR1756-CNBR1756-CNBR在实际应用之中，工具情况还以延长采样的次数，以达到较好的效果。提高读入PLC现场信号的可靠性还可利用控制系统自身特点，利用信号之间关系来判断信号的可信程度。如进行液位控制，由于储罐的尺寸是已知的，进液或出液的阀门开度和压力是已知的，在一定时间里罐内液体变化高度大约在什么范围是知道的，如果这时液位计送给PLC的数据和估算液位高度相差较大，判断可能是液位计故障，通过故障报警系统通知操作人员检查该液位计。又如各储罐有上下液位极限保护，当开关动作时发出信号给PLC，这个信号是否真实可靠，在程序设计时我们将这信号和该罐液位计信号对比，如果液位计读数也在极限位置，说明该信号是真实的；如果液位计读数不在极限位置，判断可能是液位极限开关故障或传送信号线路故障，同样通过报警系统通知操作人员处理该故障。由于在程序设计时采用了上述方法，大大提高了输入信号的可靠。★厦门泰尼电气有限公司★★联系人：小黄★★QQ：2917675397★★电话：0592-6809319★★手机：18950191386★★传真：0592-6890859（注小黄收）★★邮箱：2917675397@***.com★★地址：厦门市海沧区海沧街道滨湖一里7号2008室★GE12IAC53B811ATimeOvercurrentRelayVeryInverse1.5-12AGeneralElectricIACAllenBradleyAB845H-SJDZ24CKY1OpticalEncoderNIBATekModelTruAmp3WeldingControlandMonitorA-TekTru-AmpTAIIIWestinghouseBreakerFD3070LF70Amp70AA70AmpWestinghouse6.25kVA460/230Transformer1PH6.25kVA460V230VSOLAHevi-DutySDN20-24-100PPowerSupplySDN2024100PPS24VDCSquareDModModel4Size1BreakerMCC***et853630ACutlerHammer30APanelboardSwitchEESWR360030SB2AllenBradley1606-XLDNET824V/8APowerSupply1606-XL1606XLDNET8ABSickMSLS02-25011MSLCodedSeriesSafetyPhotoelectricSwitchMSLS0225011OpticSquareDModModel4FusedFeederMCC***et60Amp12"SquareDI-LineIF34060IF-3406060Amp60AAbreakerRelianceElectric0-58707-1Circuit0587071NIBRelianceElectric0-55307PowerSupplyInverter055307WestinghouseNuma-LogicNLE-770NLE770Expander/RmoteWestinghouseNumaLogicNL-1026SourceOutputNL1026TI/Siemens505-6511RedundantBase11I/OSlot5056511BaslerElectricBE1-50/51B-107SolidStateProtectiveRelayBE15051B107SSGE7700Series6"FusedFeederDisconnectMCC***etMitsubishiA1SJ71LP21MelsecNet10dualfibermoduleOmronC120F-CPUA7-EQSy***acPLC120VACC120FCPUA7EQABB7524A58G09CurrentTransformer800/1600:5TypeCLCSquareDQMBBranchSwitch200AmpQMB324WFusible240VHoneywellI***621-1101IsolatedInputModule6211101CH/WestinghouseHJD3250F250Breakerw/JT3200T200ATripHJD3200CutlerHammerCutlerHammerWHHJDHJD3250FJT3200THJD3200200AAmpWestinghouseHMCPHMCP250W5W250A250AmpAmp250AWestinghousePanelboardSwitchFDPS364200AmpAFDPCH/WestinghouseHJD3250F250ABreakerw/JT3200T200ATripHJD3200200AmpCutlerABB437W7790Type32RCircuitShieldReversePowerRelayRange22-260W24VDCSiemens6SN1114-0NB01-0AA1611UOption-ProfibusDP3NIBBus***annJCL-2R70AFuseJCL2R5.08kVR-ratedBussNIBBentlyNevadaXDCRI/O&RecordTerminals81545-01AlarmRelayOutputs78462-01BentlyNevada3WireRTDInputChannel82368-0179532-01PWA79532-01FBentlyNevadaTemperatureRecorders82364-0178462-02NTempRecorderBentlyNevadaRTDInput&RecordTerminal1Z2407-0178462-01AlarmRelayOutputGEFanucIC693BEM331GeniusBusControllerIC693BEM331KIC693BEM331ECTC2208CounterHighSpeedModuleControlTechnologyCorporationPLCBoardGE8000LineSize1FusibleMCCB12"***etMotorControlCenterCR3067700PlusUticor180-24A2N032R1PMD180PanelMountDisplayPMD180GE7700PlusLineSize1FusibleMCCB12"***etMotorControlCenterCR2068000Uticor76538PMD200SProgrammableMessageDisplayPMD200PMD200SAllen-Bradley2100Centerline30A12"BreakerMCC***etLightingContactorABAllen-BradleySize12100Centerline40Amp12"BreakerMCC***etMCCB40AABFoxboro2AO-V3IVoltageConverter2AO-V312AOV3ISanRexSanRexSQD400BA60SQD400BA60SanshaElectricSquareDQMB364BranchSwitch200AmpAQMB-364600V)