IC641VPP700，IC641VPP700IC641VPP700
可編程控制器的組成介紹（以FX2N系列PLC為例）
外部的開關(guān)信號(hào)、模擬信號(hào)以及各種傳感器檢測(cè)信號(hào)作為PLC的輸入變量，它們經(jīng)PLC的輸入端子進(jìn)入PLC的輸入存儲(chǔ)器，收集和暫存被控對(duì)象實(shí)際運(yùn)行的狀態(tài)信息和數(shù)據(jù)；經(jīng)PLC內(nèi)部運(yùn)算與處理后，按被控對(duì)象實(shí)際動(dòng)作要求產(chǎn)生輸出結(jié)果；輸出結(jié)果送到輸出端子作為輸出變量，驅(qū)動(dòng)執(zhí)行機(jī)構(gòu)。PLC的各部分協(xié)調(diào)一致地實(shí)現(xiàn)對(duì)現(xiàn)場(chǎng)設(shè)備的控制。
（1）中央處理器CPU
CPU的主要作用是解釋并執(zhí)行用戶及系統(tǒng)程序，通過(guò)運(yùn)行用戶及系統(tǒng)程序完成所有控制、處理、通信以及所賦予的其它功能，控制整個(gè)系統(tǒng)協(xié)調(diào)一致地工作。常用的CPU主要有通用微處理器、單片機(jī)和雙極型位片機(jī)。
（2）存儲(chǔ)器模塊
隨機(jī)存取存儲(chǔ)器RAM用于存儲(chǔ)PLC內(nèi)部的輸入、輸出信息，并存儲(chǔ)內(nèi)部繼電器（軟繼電器）、移位寄存器、數(shù)據(jù)寄存器、定時(shí)器／計(jì)數(shù)器以及累加器等的工作狀態(tài)，還可存儲(chǔ)用戶正在調(diào)試和修改的程序以及各種暫存的數(shù)據(jù)、中間變量等。
只讀存儲(chǔ)器ROM用于存儲(chǔ)系統(tǒng)程序。可擦除可編程序的只讀存儲(chǔ)器EPROM主要用來(lái)存放PLC的操作系統(tǒng)和監(jiān)控程序，如果用戶程序已完全調(diào)試好，也可將程序固化在EPROM中。
（3）輸入輸出模塊
可編程序控制器是一種工業(yè)控制計(jì)算機(jī)系統(tǒng)，它的控制對(duì)象是工業(yè)生產(chǎn)過(guò)程，與DCS相似，它與工業(yè)生產(chǎn)過(guò)程的聯(lián)系也是通過(guò)輸入輸出接口模塊(I/O)實(shí)現(xiàn)的。I/O模塊是可編程序控制器與生產(chǎn)過(guò)程相聯(lián)系的橋梁。
PLC連接的過(guò)程變量按信號(hào)類型劃分可分為開關(guān)量（即數(shù)字量）、模擬量和脈沖量等，相應(yīng)輸入輸出模塊可分為開關(guān)量輸入模塊、開關(guān)量輸出模塊、模擬量輸入模塊、模擬量輸出模塊和脈沖量輸入模塊等。
ALLEN-BRADLEY 1771-OZL CONTACT OUTPUT MODULE with 1771-WD SER A REV D02 (2A1)
ALLEN-BRADLEY 1734-RTB, 1734-MB *NIB* POINT I/O WIRING BASE ASSEMBLY (3F1)
ALLEN-BRADLEY 1734-IV4 *NIB* SER C REV A01 F/W R 3.002 (3F1)
ALLEN-BRADLEY 1494F-M1 *NIB* METAL HANDLE ASSEMBLY SER A (3B5)
ALLEN-BRADLEY 1492-SPU1B040 1P 4A 250V Breaker ! WOW !
ALLEN-BRADLEY 1492-GH050 Mini Circuit Breaker ! WOW !
ALLEN-BRADLEY 1492-CB1 G150 Circuit Breaker ! !
Allen-Bradley 1321-3R2-B 3-Phase Line Reactor 2A 600V WOW
ALLEN-BRADLEY 100-FSV136 Surge Suppressor ! WOW !
ALLEN-BRADLEY 100-FSD250 Surge Suppressor Diode ! WOW !
ALLEN-BRADLEY 100-FSD250 Surge Suppressor Diode ! !
ALLEN-BRADLEY 100-C43Z*00 CONTACTOR 24VDC COIL SER A (2E1)
ALLEN-BRADLEY 100-C23Z*400 CONTACTOR 600V 24VDC Coil SER C (2E1)
Allen-Bradley 100-C12ZJ10 Non-Reversing Contactor 24VDC ! WOW !
ALLEN-BRADLEY 100-C12DZ2410 24VDC Contactor ! WOW !
Allen-Bradley 0.55KW / 0.75HP VFD 380-460 VAC 3 phase 160-BA02NPS1P1 Ser C
Allen Bradley Slot Filler 1746-N2 B (lot of three)
Allen Bradley SLC 500 DH-485 Link Coupler 1747-AIC 1747 AIC
ALLEN BRADLEY KINETIX 6000 SLOT FILLER 2094-PRF ** IN BOX** (2E1)
Allen Bradley ER6CT-2WK Lithium Batter Pack ! WOW !
Allen Bradley CompactBlock 1792DS-IB8XOB8 Safety IO Module
Allen Bradley CC-249 Coil 200/280V 60Hz For Starter or Contactor WOW
ALLEN BRADLEY CABLE 1771-CAP3 1771CAP3 REV A01
Allen Bradley BRM200 Control Relay 600VAC ! WOW !
Allen Bradley AC Relay Series D 700-P800A1 ! WOW !
Allen Bradley AB 1746-IA16 Series C SLC 500 Rack Mount Input Module
Allen Bradley A600/59A-88VJ-6UCA NEMA Control Relay System ! WOW !
Allen Bradley A40865-071-51 PCB Circuit Board
Allen Bradley 872C-D3NP8-D4 Inductive Proximity Sensor ! IN BAG !
Allen Bradley 872C-D10NN30-D4 Proximity Switch 10mm ! WOW !
Allen Bradley 872C-A5N18-R3 Proximity Switch 5mm Range ! AS IS !
Allen Bradley 871TM-DH5NP18-D4 Proximity Switch 5mm ! WOW !
Allen Bradley 871TM-DH2NE12-A2 Proximity Switch ! !
Allen Bradley 871TM-BH5N18-A2 Proximity Sensor with Cable ! WOW !
Allen Bradley 871T-L4B12 Unshielded Proximity Switch 4mm ! !
Allen Bradley 871P-B20N40-N3 Proximity Switch AC/DC Cube 20mm ! WOW !
ALLEN BRADLEY 855T-BPM10 & 855T-BVMP POLE MT. BASE SER B WITH JUNCTION BOX SER A
ALLEN BRADLEY 855T-B24FN5 CONTROL TOWER STACK LIGHT AMBER FLASHING SER C
ALLEN BRADLEY 855T-B24FN3 CONTROL TOWER STACK LIGHT GREEN FLASHING SER A
ALLEN BRADLEY 815-BOV16 OVERLOAD RELAY ! WOW !
Allen Bradley 800T-N326 Transformer Module For Pilot Light 120V ! !
Allen Bradley 800T-N325 800T Power Module 48V AC Transformer WOW
Allen Bradley 800T-N2KF4 4-Position Selector Switch ! WOW !
Allen Bradley 800T-J91 Selector Switch Operator ! !
Allen Bradley 800T-H48 Cylinder Lock Selector Switch 2 Position ! !
Allen Bradley 800S-2SA Momentary Contact Buttons 600V ! WOW !
Allen Bradley 800MR-FXNP16RA Ser D Push-Pull Unit Illuminated Red Switch !
Allen Bradley 800H-NR2KF4AAXX Selector Switch White 4 pos ! !
Allen Bradley 800EM-KM33 22.5mm Keyed Selector Switch ! !
Allen Bradley 71A16 Contactor Coil 550V 60Cy. ! WOW !
Allen Bradley 70-A16 Coil 550V 60Cy. ! WOW !
Allen Bradley 702-BOD92 Contactor 27 Amp 3 Pole ! WOW !
Allen Bradley 700-SANY3Z25 Solid State Relay
Allen Bradley 700-P400A24 Control Relay 4NO 10A 24V 60Hz ! WOW !
Allen Bradley 700-P000A1 Relay 10AMP 120V ! !
Allen Bradley 700-NM400A1 Industrial Relay 10A 300VAC 110/120V Coil ! WOW !
Allen Bradley 700-NM200 700-NM200A1 Latching Relay 10A 2NO 110/120VAC ! WOW !
Allen Bradley 700-N5 Surge Suppressor 6-150V AC/DC ! !
Allen Bradley 700-N220A1 Control Relay 120V Coil 10amp ! WOW !
Allen Bradley 700-K22Z-KA Mini Control Relay 50/60HZ 240V ! !
Allen Bradley 700-HT22BA2 Tube Base Timing Relay 1.0-180Sec ! WOW !
Allen Bradley 700-HT12AA1 Timing Relay 120V 50/60HZ Series-A ! !
Allen Bradley 700-HT1 Relay Timer Attachment 24-240VAC 250VDC ! WOW !
Allen Bradley 700-HNC44AA24 Mini Multi-Mode Timing Relay 24VAC 50/60Hz ! !
Allen Bradley 700-HG47A1 Open Style Relay 120V 30A 50/60HZ ! WOW !
Allen Bradley 700-HG42Z24-6 Power Relay 24VDC ! WOW !
Allen Bradley 700-HG42Z24-6 Power Relay 24VDC ! !
Allen Bradley 700-HA32ZZ24 Relay 10A 24VDC ! !
Allen Bradley 700-FSA3CU23 On-Delay Timer Relay 0.5-10Sec ! !
Allen Bradley 700DC-P600Z24 700-P Control Relay 10A 6NO 24VDC ! WOW !
ALLEN BRADLEY 700DC-MB220Z24S CONTROL RELAY !
