1770-XYV***;1770-XYV***;1770-XYV***PLC的编址就是对PLC内部的元件进行编码，以便程序执行时可以地识别每个元件。PLC内部在数据存储区为每一种元件分配一个存储区域，并用字母作为区域标志符，同时表示元件的类型。如：数字量输入写入输入映象寄存器（区标志符为I），数字量输出写入输出映象寄存器（区标志符为Q），模拟量输入写入模拟量输入映象寄存器（区标志符为AI），模拟量输出写入模拟量输出映象寄存器（区标志符为AQ）。除了输入输出外，PLC还有其他元件，V表示变量存储器；M表示内部标志位存储器；***表示特殊标志位存储器；L表示局部存储器；T表示定时器；C表示计数器；HC表示高速计数器；S表示顺序控制存储器；AC表示累加器。掌握各元件的功能和使用方法是编程的基础。下面将介绍元件的编址方式。存储器的单位可以是位（bit）、字节（Byte）、字（Word）、双字（DoubleWord），那么编址方式也可以分为位、字节、字、双字编址。1.位编址位编址的方式为：（区域标志符）字节号�位号，如I0.0；Q0.0；I1.2。2.字节编址字节编址的方式为：（区域标志符）B（字节号），如IB0表示由I0.0～I0.7这8位组成的字节。3.字编址字编址的方式为：（区域标志符）W（起始字节号），且有效字节为起始字节。例如VW0表示由VB0和VB1这2字节组成的字。4.双字编址双字编址的方式为：（区域标志符）D（起始字节号），且有效字节为起始字节。例如VD0表示由VB0到VB3这4字节组成的双字。ASEABROWNBOVERIACS501-010-6-X​00P5USPPACS5010106X00P​5FORCECOMPUTERSSYS68K/RR-3USPPSYS68KRR3TEXASINSTRUMENTSPLC505-7340NSFP5057340ASEABROWNBOVERI57771224NSFP57771224TexasInstruments14SlotRackBase500-5848#23931ASEABROWNBOVERIEH550G-PRL11NSFPEH550GPRL11NICETEXASINSTRUMENTSSERIES500CONTROLLER520C-1102HELMHPC-7800USPPHPC7800TEXASINSTRUMENTSPLC305-17ADCUSPP30517ADCAMETEKZF2-480-60-UB-​01USPPZF248060UB01PanasonicM***022A1AACServoMotorNewinBoxFreeShipPanasonicACServoDriveMSD013A1XFreeShipTEXASINSTRUMENTSPLC500-2114USPP5002114SIEMENS6RA2-107-0BD20​-0USPP6RA21070BD200SiemensSimaticTI435PLC,crossestoDirectLOGICD4-440,KoyoSU-6BASEABROWNBOVERIACX550-U0-06A1​-6NSPPACX550U006A16TEXASINSTRUMENTSPLC505-4232USPP5054232SIEB&MEYER26.44.29NSFP264429OMRONF30NSFPF30TexasInstruments2497284PCBDPM550CMU-7KNEWSIEMENS525-1102SIMATICTI525PLCCPUMOCULEKAWASAKI50999-1470R41NSFP509991470R41TEXASINSTRUMENTSPLC505-4616ANSPP5054616AASEABROWNBOVERIDSFS-11USPPDSFS11ASEABROWNBOVERIACH501-015-2-0​0P2USPPACH501015200P2ASEABROWNBOVERI57088630USPP57088630***ARCPU-700-AUSPPCPU700ATexasInstruments505-7002DANFOSS175L3203NSPP175L3203TEXASINSTRUMENTSPLC2459322NSFP2459322DATALOGICDS6300-100-010USPPDS6300100010PanasonicACServoMotorM***A012S1AFreeShipCUTLERHAMMERA202K47USPPA202K47ASEABROWNBOVERINF457-NSFPNF457PanasonicACServoMotorM***A082A1EFreeShipASEABROWNBOVERI57510001-AA/5USPP57510001AA5ASEABROWNBOVERI57350001-CN/2USPP57350001CN2TEXASINSTRUMENTSPLC500-5037AUSPP5005037AFISHERROSEMOUNTDM6001X1-KA15USPPDM6001X1KA15(AG01)PANASONICM***041A1FACSERVOMOTORWORKINGTEXASINSTRUMENTSPLC2497284USPP2497284TEXASINSTRUMENTSPLCPM550-210USPPPM550210PanasonicACServoDriveMSD3A3A1XFreeShipPANASONICMSDA5A3A1AACSERVODRIVERNEWPanasonicMatsushitaSERVOMOTORM***012QBVASEABROWNBOVERI3HAB1093-015USPP3HAB1093015ASEABROWNBOVERI57088621NSFP57088621TEXASINSTRUMENTSPLC5TI-1029-1USPP5TI10291PanasonicACServoDriverMDD103A1VVFreeShipPerceptron140-0138ReplacementLaserModulePERCEPTRON911-0007TRON630264USPP630264I***620-1631USPP6201631TexasInstrumentsRTU-DIN-1DigitalInputBoardPart#520-063520063SIEMENS6FX1-120-2CA00USPP6FX11202CA00TEXASINSTRUMENTSPLC565-2820USPP5652820TEXASINSTRUMENTSPLC555-1102USPP5551102ASEABROWNBOVERIYT204001-FSI1USPPYT204001FSI1YASKAWAELECTRICJAMSC-B1083CNSFPJAMSCB1083CTEXASINSTRUMENTSPLC2493295-0002USPP24932950002FUJIELECTRICB128C-2ANSFPB128C2AASEABROWNBOVERIEH300C-1LNSFPEH300C1LASEABROWNBOVERI3HAB-2136-1/2USPP3HAB213612PANASONICSERVODRIVERMfDDTA390L013KWPHDINC7980-03-1101NSPP7980031101ASEABROWNBOVERISSA040-481NSFPSSA040481SiemensSimaticTI-505PLCRackSystem-12FISCHER&PORTER53MC5412A25BAC​2DXXXXUSPP53MC5412A25BAC​2DTEXASINSTRUMENTSPLC164-1113USPP1641113PanasonicMSDA1A311A50ACServoDriverSIEMENSTEXASINSTRUMENTSENHANCEDRUNTIMEKEYBOARDCONTROLLER2587716-8002SANYODENKIMC1K-U100USPPMC1KU100ASEABROWNBOVERI3HAA0001YUNSPP3HAA0001YUATLASCOPCO038240-00500USPP03824000500PanasonicIndustrialACServoMotorM***D042S1V0.4KWTEXASINSTRUMENTSPLC505-4032ANSFP5054032ASiemensTI565PLCMemoryCard560-2136ASEABROWNBOVERI58096652USPP58096652)