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可编程控制器，英文称ProgrammableLogicController，简称PLC。PLC是基于电子计算机，且适用于工业现场工作的电控制器。它源于继电控制装置，但它不像继电装置那样，通过电路的物理过程实现控制，而主要靠运行存储于PLC内存中的程序，进行入出信息变换实现控制。 
PLC基于电子计算机，但并不等同于普通计算机。普遍计算机进行入出信息变换，多只考虑信息本身，信息的入出，只要人机界面好就可以了。而PLC则还要考虑信息入出的可靠性、实时性，以及信息的使用等问题。特别要考虑怎么适应于工业环境，如便于安装，抗干扰等问题。 

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EMERSON KL4503X1-BA1 DELTAV CHARM BOTTOM EXTENDER REV F D559754

PHOENIX ConTACT TRIO-DIODE/12-24DC/2X10/1X20 REDUNDANCY MODULE D559741

CANADIAN ConTROLLERS LTD 3000 PBC-PIR22T 6-BUTTON PENDANT STATION D559978

BAILEY IMDSI02 INFI 90 DIGITAL INPUT SLAVE ConTROL MODULE D563493

REXROTH R978835256 2/500 PUA31-08 FLOAT SWITCH D561381

REXROTH R978835262 3/500 PUA-31-07 FLOAT SWITCH D561572

ALLEN BRADLEY 9101-1380-025 P24600-E25 FEEDBACK CABLE SER E D572349

ATC 305E015A20PX 0-15MIN 120V-AC TIMER D565953

DIAMOND POWER 336051-1038 5 INPUT DIODE GATE PCB CIRCUIT BOARD D565798

ASEA RXMA 1 RK211 050-AN COMBIFLEX 110-125V-DC RELAY D565428

ASEA RXMA 1 RK211 074-AN COMBIFLEX 110-125V-DC RELAY D565430

ASEA RXMA 1 RK 211 052-AN 110-125V-DC RELAY D565431

DIAMOND POWER 336754-1038 5 OUTPUT DIODE GATE PCB CIRCUIT BOARD D566062

EMERSON DELTAV KL3013X1-BA1 DO 12P5347X032 ISOLATED CHARM MODULE D566777

ALLEN BRADLEY 1794-IE8 FLEX I/O ANALOG INPUT MODULE SER B 24V-DC D569332

ALLEN BRADLEY 802F-E60MS2 KEY INTERLOCK SWITCH SER A D571898

P&B GOLDS MN5AL1B-C52L-5 THERMAL OVERLOAD STALLING RELAY 120V-AC 15A D541330

SIEMENS WLDGNCUB CUBICLE BUS DIGITAL 24V-DC INPUT MODULE D555470

ALLEN BRADLEY EK-2170-0-45 SENSOR PROBE 4.5M EXTENSION CABLE SER A D541788

YOKOGAWA E7056NA AS E7056NE-00 MX CHANNEL CARD PCB CIRCUIT BOARD D542259

ALLEN BRADLEY 837-A7 TEMPERATURE SWITCH SER A D564274

DIAMOND POWER 336328-1035 4/S NO REEDS RELAY MODULE PCB CIRCUIT BOARD D568193

PEPPERL FUCHS KLD2-FBPS-1.25.360 FIELDConNEX POWER SUPPLY 25-27V-DC D587504

ALLEN BRADLEY 1792D-0B4D REV A01 SER B OUTPUT MODULE D587597

DELL SMP POWEREDGE 2550 RACK MOUNT SERVER 100-240V-AC 6A D588978

ABB 3BSE008536R1 CABLE ADAPTER BUS INLET D588684

LEAR SIEGLER 80030027-1 CALIBRATION TIMER & POWER SUPPLY CIRCUIT BOARD D594567

VICON V1921BDA BI-DIRECTIonAL AMPLIFIER D595053

GE TGSMP GROUND BREAK MonITOR PANEL 120V-AC D595847

FUJI E14L-2389-S200 R2J 5487 120/240V-AC POWER SUPPLY D525134

ASCO PB21B TRI-POINT 125/250V-AC 5A AMP PRESSURE SWITCH D552784

FENWAL 32-194005-002 DELTA PAC TEMPERATURE ConTROL UNIT D532600

GE 7610023 PRC-100 RAPPER ConTROL INTERFACE PCB CIRCUIT BOARD REV D D541781

AMPHENOL 67-06P12-60SX CIRCULAR ConNECTOR D552522

HATHAWAY RPS 100 QUALITROL 309179 LOGIC POWER MODULE D557879

LEAR SIEGLER 80030027-1 CALIBRATION TIMER & POWER SUPPLY CIRCUIT BOARD D534707

PARKER PSSP8M8A SER A 24V-DC INPUT MODULE D530658

34176 34294 ASM PCB CIRCUIT BOARD D553214

CHROMALOX 3803-40160 3800 SERIES 120V-AC ConTROLLER D559565

ALLEN BRADLEY 20-HIM-C3S REMOTE LCD SER A 12V-DC INTERFACE MODULE D568119

LAMBDA LUD-16-44 POWER SUPPLY 85-132V-AC D569201

DIAMOND POWER 336328-1035 4/S NO REEDS RELAY MODULE CIRCUIT BOARD REV F D565811

HACH 44000-10 1720C LOW RANGE PROCESS TURBIDIMETER 115/230V-AC D577165

ALLEN BRADLEY MSR230P 440R-H23180 GUARDMASTER SAFETY RELAY SER B 24V D573630

VERIS EP2100S2 0-20PSI ELECTROPNEUMATIC TRANSDUCER D573886

RAD IMB-PS/AC PS-100/AC POWER SUPPLY 100-115VAC 6A AMP PCB CIRCUIT BOARD D575703

STonEL HK3077SR HAWKEYE SOLID STATE PROXIMITY SENSOR 24-125V-AC 2MA D583051

AC TECH 960-304 PCB CIRCUIT BOARD D561879