HONEYWELL SDO-0824 元宵降价大处理!
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输入输出信息变换、可靠物理实现,可以说是PLC实现控制的两个基本要点。
输入输出信息变换靠运行存储于PLC内存中的程序实现。PLC程序既有生产厂家的系统程序(不可更改),又有用户自行开发的应用(用户)程序。系统程序提供运行平台,同时,还为PLC程序可靠运行及信号与信息转换进行必要的公共处理。用户程序由用户按控制要求设计。什么样的控制要求,就应有什么样的用户程序。
可靠物理实现主要靠输人(INPUT)及输出(OUTPUT)电路。PLC的I/O电路,都是专门设计的。输入电路要对输入信号进行滤波,以去掉高频干扰。而且与内部计算机电路在电上是隔离的,靠光耦元件建立联系。输出电路内外也是电隔离的,靠光耦元件或输出继电器建立联系。输出电路还要进行功率放大,以足以带动一般的工业控制元器件,如电磁阀、接触器等等。
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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