1794-AENTR输入模块1794-AENTR输入模块1794-AENTR输入模块PLC的容量包括I／O点数和用户存储容量两个方面。(一)I／O点数的选择PLC平均的I／O点的价格还比较高，因此应该合理选用PLC的I／O点的数量，在满足控制要求的前提下力争使用的I／O点***少，但必须留有一定的裕量。通常I／O点数是根据被控对象的输入、输出信号的实际需要，再加上10％~15％的裕量来确定。(二)存储容量的选择用户程序所需的存储容量大小不仅与PLC系统的功能有关，而且还与功能实现的方法、程序编写水平有关。一个有经验的程序员和一个初学者，在完成同一复杂功能时，其程序量可能相差25％之多，所以对于初学者应该在存储容量估算时多留裕量。PLC的I／O点数的多少，在很大程序上反映了PLC系统的功能要求，因此可在I／O点数确定的基础上，按下式估算存储容量后，再加20％~30％的裕量。存储容量（字节）＝开关量I／O点数×10＋模拟量I／O通道数×100另外，在存储容量选择的同时，注意对存储器的类型的选择。TEXASINSTRUMENT525-1102CPUMODULEGOODTAKEOUTALLENBRADLEY1336-GM2FNFP1336GM2SQUARED30528-001-57NSFP3052800157ASEABROWNBOVERIRVS-6-100/120VNSFPRVS6100120VRELIANCEELECTRIC0-51831-7NSFP0518317ASEABROWNBOVERIACS601-0009-4-​000B1500801USPPACS60100094000​B3TEXASINSTRUMENTSPLC505-CP1434TFNSPP505CP1434TFTEXASINSTRUMENTSPLC505-4732USPP5054732ASEABROWNBOVERIACS601-0009-5-​000B1500800USPPACS60100095000​B1GEM808204-8603USPP82048603PanasonicACServoDriverMADHT1507ENIBFreeShipNEWPERCEPTRON495-0191PCBOARDFRAMEGRABBER4950191TEXASINSTRUMENTSPLC120-1111USPP1201111TEXASINSTRUMENTS505-4116LOWVDCINPUTMODULE5054116NIBTexasInstruments7MT700ASEABROWNBOVERI069829-001USPP069829001TEXASINSTRUMENTSPLC560-2126AUSPP5602126ATEXASINSTRUMENTS545-1101**ASEABROWNBOVERIQDBB-153MUSPPQDBB153M505-5417TexasInstruments/Si​emensTI5055417R27TexasInstruments500-5052ResistanceTempDetectorTISIEMENS6ES5-923-3UA11NSFP6ES59233UA11PanasonicACServoMotorM***A082A1EFreeShipTEXASINSTRUMENTSTI500-5038NETWORKINTERFACEMODULEDANFOSSVLT5022P-T5-C2​0-SB-R3-D0-F00​-A00-C0NSPPVLT5022PT5C20S​BRPanasonicACServoDriverMCDDT3520003NewinBoxFreeshipPanasonicACSERVOMOTORM***A082A1GFreeShipASEABROWNBOVERI57340001-K/2USPP57340001K2PERCEPTRONUS400D45VASEABROWNBOVERI3GAA092302-ASA​G1NSPP3GAA092302ASAG​1ASEABROWNBOVERI57287853USPP57287853TEXASINSTRUMENTSPLC305-17ADCNSFP30517ADCPARKERLA470617U001FNFPLA470617U001(AB01)ACSERVODRIVERPANASONICMSD-11A1XX21WORKINGSYMAX8881-MD2USPP8881MD2ASEABROWNBOVERI57520001-EV/9USPP57520001EV9ASEABROWNBOVERI6200DP10800EUSPP6200DP10800EASEABROWNBOVERIGNT0137111P000​2USPPGNT0137111P000​2TexasInstruments500-2103OMRON3Z4M-J1001-901NSFP3Z4MJ1001901PANASONICMFA024LA2NS240W3500RPMACSERVOMOTOR*NNB*TEXASINSTRUMENTSPLC100-3103USPP1003103TEXASINSTRUMENTSPLC555-1104USPP5551104ALLENBRADLEY8500-E151USPP8500E151TEXASINSTRUMENTSPLC7MT-700NSFP7MT700TEXASINSTRUMENTS520-1101USPP5201101TEXASINSTRUMENTSPLC505-6202USPP5056202TEXASINSTRUMENTSPLC7MT-100AUSPP7MT100AASEABROWNBOVERI3BSE006065SR1USPP3BSE006065SR1ALLENBRADLEY1336-B015-EDE-​L3USPP1336B015EDEL3PANASONICACSERVODRIVERMSDA3A3D1AFreeShipTexasInstruments5TI-4100TexasInstruments505-4908SEWEURODRIVEKAF77LP145USPPKAF77LP145ASEABROWNBOVERI58095141NSFP58095141TEXASINSTRUMENTSPLC128-1114NSFP1281114CATEPINTERNATIONALBD.20-02USPPBD2002SAJF//PANASONICDV80X250MF5ACSERVODRIVERUSEDSTENTOFON630540-SB4NSPP630540SB4TEXASINSTRUMENTSPLC505-7201USPP5057201TEXASINSTRUMENTSPLC505-4032ANSPP5054032AASEABROWNBOVERIUSART86-8CHNSFPUSART868CHTITexasInstruments500-588412-SlotRackbase5005884)