1756-IB16I输入模块;1756-IB16I输入模块;1756-IB16I输入模块日常维护PLC的日常维护和***比较简单，主要是更换丝和锂电池,基本没有其它易损元器件。由于存放用户程序的随机存储器（RAM）、计数器和具有保持功能的辅助继电器等均用锂电池保护，锂电池的寿命大约为5年，当锂电池的电压逐渐降低到一定程度时，PLC基本单元上电池电压跌落到指示灯亮，提示用户注意有锂电池所支持的程序还可保留一周左右，必须更换电池，这是日常维护的主要内容。调换锂电池的步骤为：■在拆装前，应先让PLC通电15秒以上（这样可使作为存储器备用电源的电容器充电，在锂电池断开后，该电容可对PLC做短暂供电，以保护RAM中的信息不丢失）；■断开PLC的交流电源；■打开基本单元的电池盖板；■取下旧电池，装上新电池；■盖上电池盖板。注意更换电池时间要尽量短，一般不允许超过3分钟。如果时间过长，RAM中的程序将消失。此外,应注意更换丝时要采用型号的产品。I/O模块的更换若需替换一个模块，用户应确认被安装的模块是同类型。有些I/O系统允许带电更换模块，而有些则需切断电源。若替换后可解决问题，但在一相对较短时间后又发生故障，那么用户应检查能产生电压的***负载，也许需要从外部其电流尖峰。如果丝在更换后易被烧断，则有可能是模块的输出电流超限，或输出设备被短路。PLC的故障诊断是一个十分重要的问题，是保证PLC控制系统正常、可靠运行的关键。本文对常用的故障诊断方法进行了探讨。在实际工作过程中，应充分考虑到对PLC的各种不利因素，定期进行检查和日常维护，以保证PLC控制系统安全、可靠地运行。ASEABROWNBOVERIOETL-NF600A-2S​WNSFPOETLNF600A2SWASEABROWNBOVERIS6H600BWUSPPS6H600BWSIEMENS6FC5-203-0AB12​-0AA0USPP6FC52030AB120A​A0PANASONICMSD011P1EUSPPMSD011P1ETEXASINSTRUMENTSPLC5136-DNS-200X-​8DINSFP5136DNS200X8DIASEABROWNBOVERI57360001-HC/3USPP57360001HC3TEXASINSTRUMENTSPLC315-10SNSFP31510SASEABROWNBOVERIDCS502-B025051​21USPPDCS502B0250512​1FOXBORO2AX-MULUSPP2AXMULTISiemens500-5114-ARemoteBaseControllerwRS485PortPLC500-5114A5005114ADYNAMATIC15-283-1410USPP152831410GETTYS110-092USPP110092ALLENBRADLEY1784-PCMK/BUSPP1784PCMKBTEXASINSTRUMENTS500-5011OUTPUTMODULELOT5005011NSDV8L55-11NSPPV8L5511OnePanasonicACServoDriverDV85018HA502MITSUBISHILX6IC-BN624E25​2AUSPPLX6ICBN624E252​ATEXASINSTRUMENTSPLC560-2124NSFP5602124PANASONICMINASACSERVODRIVERDV88003LFGAEAJL100VM***A042A1GPanasonicACServoMotorNewinBoxFreeShipTexasInstruments5TI-5500ASEABROWNBOVERI68463815-PFNFP68463815PALLENBRADLEY8000-MDBUSPP8000MDBALLENBRADLEY1336-B003-EAD-​FA2-L1USPP1336B003EADFA2​L1ALLENBRADLEY8600-2079PUSPP86002079PTEXASINSTRUMENTS505-4116LOWVDCINPUTMODULE5054116NIBTEXASINSTRUMENTSPLC305-25TNSFP30525TTEXASINSTRUMENTSPLC575-2102USPP5752102PerceptronFrameGrabberBoard495-0191-00#29410TEXASINSTRUMENTSPLC505-4616NSPP5054616TEXASINSTRUMENTSPLC505-6851BNSPP5056851BASEABROWNBOVERIPP07512HSFNFPPP07512HSPanasonicACServoDriverMCDDT3520003NewinBoxFreeshipASEABROWNBOVERIYT2120001-AZ-2USPPYT2120001AZ2TEXASINSTRUMENTSPLC500-2108USPP5002108MOOG152D-423A-1USPP152D423A1ASEABROWNBOVERIL***63600USPPL***63600ADEPTTECH10300-15520NSFP1030015520TEXASINSTRUMENTSPLC500-5054USPP5005054PanasonicACServoMotorM***A082C2F750WFreeShipSIEMENS6FX-1112-1AD00USPP6FX11121AD00TEXASINSTRUMENTSPLC100-3103USPP1003103PanasonicACServoMotorMHMA102P1CFreeShipASEABROWNBOVERIYT212001-USPPYT212001TRUTZSCHLER9494.70.536.50​1USPP949470536501TEXASINSTRUMENTSPLC505-2572USPP5052572AMETEKZF2-480-60-UB-​01USPPZF248060UB01PERCEPTRONCAMERATRICAMSURFACESENSOR912-0007TEXASINSTRUMENTSDIGITALOUTPUTUNITMODEL#500-5013!PanasonicMGDA093A1AACSERVODRIVERFreeShipPanasonicACServoDriverMCDDT3520003NewinBoxFreeshipBAILEYCONTROLSNP***02USPPNP***02YASKAWAELECTRICJANCD-SV03BNSPPJANCDSV03BASEABROWNBOVERIYT204001-FSUSPPYT204001FSCONTROLTECHNIQUESDXM-316CUSPPDXM316CSIEMENSTI6ES5453-4UA12PLCNEWASEABROWNBOVERI57510001-AAUSPP57510001AAFISHERROSEMOUNT8732CT12N0M4USPP8732CT12N0M4Panasonic2.5kWACServoDriverMDDA253A1AASEABROWNBOVERIYB560103-ALUSPPYB560103ALTEXASINSTRUMENTS500-5040NETWORKINTERFACEModuleTEXASINSTRUMENTSPLCTMM10010-05USPPTMM1001005PANASONICACSERVODRIVERADKA100GVTAAACNCASEABROWNBOVERI3HAA2207-002USPP3HAA2207002TEXASINSTRUMENTSPLC500-2101NSFP5002101CEGELECMDOUSPPMDOALLENBRADLEY500L-EOA94NSPP500LEOA94ASEABROWNBOVERIYB161102-BSUSPPYB161102BSHONEYWELL30752783-001USPP30752783001ALLENBRADLEY6158-AAAAAZAAZ​ZUSPP6158AAAAAZAAZZTEXASINSTRUMENTSPLCVPU-200USPPVPU200PanasonicACServoMotorM***041AJAFreeShipORMECSACS-26F101BUSPPSACS26F101BTEXASINSTRUMENTSPLC305-01ADUSPP30501ADPanasonicAMK8100810SAFACServoMotorASEABROWNBOVERI57360001-HC/3USPP57360001HC3USEDPerceptron390-0049Enna17Monitor0520776002ALLENBRADLEY1336-B003-EAD-​FA2-L3-S1USPP1336B003EADFA2​L3)