1794-OA81794-OA81794-OA8（1）输入扫描在这一阶段中，PLC以扫描方式读入所有输入端子上的输入信号，并将输入信号存入输入映像区，输入映像存储器被刷新。在程序执行阶段和输出刷新阶段中，输入映像存储器与外界隔离，其内容保持不变，直至下一个扫描周期的输入扫描阶段，才被重新读入的输入信号刷新。可见，PLC在执行程序和处理数据时，不直接使用现场当时的输入信号，而使用本次采样时输入到映像区中的数据。如果输入设备能使PLC输入端形成闭合回路，对应输入端编号的内部输入继电器内保存为“1”，即相当于继电器线圈导通。在程序执行过程中，该编号对应的触点动作；如果输入设备能使输入开路，则对应输入端编号的内部输入继电器内保存为“0”，即相当于继电器线圈没导通，在程序执行过程中，该编号对应的触点不动作。如果在PLC处于非输入扫描的阶段，PLC外的输入设备状态发生了变化，内部输入继电器也不会发生变化，要等到下一个输入扫描阶段才能根据此时的输入状态来刷新。所以，对于少于十几毫秒的输入信号，经常采集不到。【***】【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NEWALLENBRADLEY1398-DDM-009XSERVODRIVEANALOGALLENBRADLEY1398-PDM-030ABAllen-Bradley1398-DDM-009UltraSeriesServoDriveNEWALLENBRADLEYULTRAPOSITIONINGDRIVE1398-PDM-0301398-DDM-010AllenBradley1398DDM010N220$7000LISTALLENBRADLEY1398-DDM-019X1398DDM019X1398-PDM-010AllenBradley1398PDM010N901398-DDM-005AllenBradley1398DDM005N763ALLENBRADLEY1398-DDM-0101398DDM010NEWNIBAllen-Bradley/A​B1398-DDM-009-DNUltraServoDriveAllenBradleyUltraSeries1398-DDM-019X-D​NAllenBradleyUltraSeries1398-DDM-005ALLENBRADLEYULTRA-SERIESMOTORCONTROLLERM#1398-DDMNEWAllenBradleyUltraACDrive1398-DDM-009X-D​NAllenBradley1398-SR3AFResisterModule#5429ALLENBRADLEYULTRAPOSITIONINGDRIVE1398-DDM-009ALLENBRADLEY1398-DDM-0051398DDM005ALLENBRADLEY1398-DDM-030X1398DDM030XSERVO9101-16301398-DDM-019ALLENBRADLEYAllenBradley1398-SR3AF9101-1660SHUNTRESISTORAllenBradleyUltraSeries1398-DDM-019X-D​NSerB(3287AllenBradley1398-DDM-020BrushlessServoDriveAllenBradley1398-DDM-020CNCServoDrive1398DDM020NEWAllenBradleyUltraACDrive1398-DDM-009X-D​NUSEDALLENBRADLEYULTRASERVODRIVE1398-DDM-009AllenBradley1398-DDM-019XServoIndexingDriveAllenBradley1398-DDM-019x|Ultra100ServoAllenBradley1398-DDM-005SERVODRIVEULTRA100AllenBradley1398-SR3AFSHUNTMODULEACTIVERESISTORAllenBradley1398-DDM-009X-D​N,1398DDM009XDNSEALEDAllenBradley1398-DDM-005SERVODRIVEULTRA100AllenBradleyServoDrive1398-DDM-0099101-1532AllenBradley1398-DDM-009XVariableFrequencyDriveAllenBradley1398-DDM-030UltraServoDrive(4252)ALLENBRADLEY1398-DDM-005SERVODRIVE1398DDM005AllenBradley1398-DDM-009Ultra3000ServoDriveMotorALLENBRADLEY1398-DDM-009X-D​NULTRASERIESSERVODRIVEAllenBradley1398-DDM-009Ultra3000ServoDriveMotorAllenBradleyTouchControlPanel1398-HMI-003SeriesBALLENBRADLEY1398-DDM-005X-D​NUSPP1398DDM005XDNAllenBradleyServoDrive1398-DDM-005ALLENBRADLEYSERVODRIVE1398-DDM-005120/240VACAllenBradley1398-DDM-019XAllenBradley1398-DDM-005XSERVODRIVE7.5AMPPEAKAllenBradley1398-DDM-020|Ultra100ServoAllenBradley1398-DDM-005|Ultra100ServoDriveALLENBRADLEY1398-DDM-005XSERVODRIVE9101-1551ALLENBRADLEY1398-DDM-009X-D​N/A15AMPDRIVEAllenBradley1398-DDM-019x-D​N|Ultra100ServoNEWALLENBRADLEY1398DDM019XDNSERVODRIVE30AMPPEAKALLENBRADLEY1398-SR3AFSER.BSHUNTACTIVERESISTOR1398-SR3AFALLENBRADLEYALLENBRADLEY1398-DDM-0057.5AMPBRUSHLESSSERVODRIVEAllenBradley1398-DDM-009x|Ultra100ServoAllenBradley1398-DDM-009|Ultra100AllenBradley1398-DDM-019-DN​/1398DDM019DNDriveAllenBradley#1398-DDM-030XUltra200Drive(N)PR4/1AALLENBRADLEY1398-DDM-010DRIVE1398DDM010AllenBradleyPassiveShunt1398-SR9P#10614-17AllenBradley1398-DDM-009x-D​N|Ultra100AllenBradley1398-SR9PPassiveShunt#3035ALLENBRADLEY1398-DDM-020DRIVE1398DDM0201398-DDM-009ALLENBRADLEYANALOGSERVODRIVEALLENBRADLEY1398-DDM-005SERVODRIVEALLENBRADLEY1398-DDM-010XULTRA20010AMPDRIVEALLENBRADLEY1398-DDM-005SERVODRIVEALLENBRADLEY1398-DDM-030X/A30AMPSERVODRIVEALLENBRADLEY1398-DDM-020/91​01-1458SERVODRIVEALLENBRADLEY1398-DDM-020DRIVE1398DDM020AllenBradley#1398-HMI-001TouchPadModule(U)6/2/35AllenBradley1398-DDM-009x-D​N|Ultra100AllenBradley1398-DDM-019XServo9101-15531398DDM019XALLENBRADLEY1398-DDM-075X75AALLENBRADLEY1398-DDM-030X/9​101-163030AMAllenBradleyServoDriveM#1398-DDM-020ALLENBRADLEY1398-DDM-009XSERVODRIVE9101-1552AllenBradley1398DDM009XAllen-BradleyServoDrive1398-DDM-009Ver.1.36AllenBradleyServoDrive1398-DDM-005#17018AllenBradleyUltraSeries1398-DDM-019X-D​NUsedALLENBRADLEY1398-DDM-009XUSPP1398DDM009XALLENBRADLEY1398-DDM-009-DNUSPP1398DDM009DNALLENBRADLEY1398-PDM-010USPP1398PDM010ALLENBRADLEY1398-DDM-019XNSFP1398DDM019X)