IC600WD002，IC600WD002，IC600WD002
PLC的結(jié)構(gòu)及各部分的作用
、主機(jī)
主機(jī)部分包括中央處理器（CPU）、系統(tǒng)程序存儲(chǔ)器和用戶程序及數(shù)據(jù)存儲(chǔ)器。CPU是PLC的核心，它用以運(yùn)行用戶程序、監(jiān)控輸入/輸出接口狀態(tài)、作出邏輯判斷和進(jìn)行數(shù)據(jù)處理，即讀取輸入變量、完成用戶指令規(guī)定的各種操作，將結(jié)果送到輸出端，并響應(yīng)外部設(shè)備（如電腦、打印機(jī)等）的請(qǐng)求以及進(jìn)行各種內(nèi)部判斷等。PLC的內(nèi)部存儲(chǔ)器有兩類，一類是系統(tǒng)程序存儲(chǔ)器，主要存放系統(tǒng)管理和監(jiān)控程序及對(duì)用戶程序作編譯處理的程序，系統(tǒng)程序已由廠家固定，用戶不能更改；另一類是用戶程序及數(shù)據(jù)存儲(chǔ)器，主要存放用戶編制的應(yīng)用程序及各種暫存數(shù)據(jù)和中間結(jié)果。
2、輸入/輸出（I/O）接口
I/O接口是PLC與輸入/輸出設(shè)備連接的部件。輸入接口接受輸入設(shè)備（如按鈕、傳感器、觸點(diǎn)、行程開關(guān)等）的控制信號(hào)。輸出接口是將主機(jī)經(jīng)處理后的結(jié)果通過功放電路去驅(qū)動(dòng)輸出設(shè)備（如接觸器、電磁閥、指示燈等）。I/O接口一般采用光電耦合電路，以減少電磁干擾，從而提高了可靠性。I/O點(diǎn)數(shù)即輸入/輸出端子數(shù)是PLC的一項(xiàng)主要技術(shù)指標(biāo)，通常小型機(jī)有幾十個(gè)點(diǎn)，中型機(jī)有幾百個(gè)點(diǎn)，大型機(jī)將超過千點(diǎn)。
3、電源
圖中電源是指為CPU、存儲(chǔ)器、I/O接口等內(nèi)部電子電路工作所配置的直流開關(guān)穩(wěn)壓電源，通常也為輸入設(shè)備提供直流電源。
4、編程
編程是PLC利用外部設(shè)備，用戶用來輸入、檢查、修改、調(diào)試程序或監(jiān)示PLC的工作情況。通過專用的PC/PPI電纜線將PLC與電腦聯(lián)接，并利用專用的軟件進(jìn)行電腦編程和監(jiān)控。
5、輸入/輸出擴(kuò)展單元
I/O擴(kuò)展接口用于將擴(kuò)充外部輸入/輸出端子數(shù)的擴(kuò)展單元與基本單元（即主機(jī)）連接在一起。
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Rockwell Automation 1336 125hp 460V vfd drive AB Allen Bradley
NNB ALLEN BRADLEY N-4220-2-H00AA
Sealed Allen Bradley 1769-L24ER-QB1B /A 2015 CompactLogix 5370 Ethernet CPU
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ALLEN-BRADLEY 1394-SJT22-C-RL 22KW SYSTEM MODULE IMC-S,RIO&AXIS LINK (2E5)
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ALLEN-BRADLEY 1336F-CWF50-AN-EN 3 PHASE AC DRIVE SER A (4C5)
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ALLEN-BRADLEY 1326AB-B410G-21+1326AB-PGB03-21 Servo
ALLEN-BRADLEY 1102C-BOD93 VACUUM CONTACTOR 200A 1500V 1102C-CP2D (4B5)
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Allen Bradley/Reliance 1326AB-B530E-21 Servo Motor 460V 3000 RPM ! WOW !
Allen Bradley SMC-3 Soft Start 150-C135NCD 125HP @ 575V 100HP @ 460V * *
Allen Bradley Servo Motor MPL-B4530K-MJ74AA MPLB4530KMJ74AA * 2014*
Allen Bradley Servo Motor MPL-B430P-MJ74AA MPLB430PMJ74AA * SEALED 2014*
Allen Bradley Servo Motor MPL-B320P-MJ74AA MPLB320PMJ74AA * 2014*
Allen Bradley Panelview Plus 700 2711P-T7C4D8
ALLEN BRADLEY PANELVIEW PLUS 2711P-T7C4D8 2711PT7C4D8 * SEALED 2014*
ALLEN BRADLEY PANELVIEW PLUS 2711P-T12C4D8 2711PT12C4D8 * SEALED 2015*
ALLEN BRADLEY PANELVIEW PLUS 2711P-T10C4D9 2711PT10C4D9 * SEALED 2014*
ALLEN BRADLEY PANELVIEW PLUS 2711PC-T10C4D8 2711PCT10C4D8 * SEALED 2014*
Allen Bradley Panelview Plus 1000 2711P-K10C4A1 *Remanufactured*
Allen Bradley Panelview Plus 1000 2711P-K10C4A1 *Remanufactured*
ALLEN BRADLEY PANELVIEW PLUS 10 '' 2711P-T10C4D8 2711PT10C4D8 * SEALED 2015*
ALLEN BRADLEY PANELVIEW 600, 2711-K6C10L1 2711K6C10L1 *WORKING TESTED*
ALLEN BRADLEY PANELVIEW 600 2711-T6C20L1X 2711T6C20L1X SER B FRN 4.46 REV F *
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Allen Bradley MPS-A330P-M-X156 Stainless Steel Servo Motor 3.6nM 5000RPM ! WOW !
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ALLEN BRADLEY MPF-A430P-MJ22BA
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ALLEN BRADLEY CONTROLLER 1769-L23E-QB1B 1769L23EQB1B * SEALED 2013*
ALLEN BRADLEY COMPACTLOGIX CONTROLLER 1769-L33ERM 1769L33ERM * SEALED*
Allen Bradley CompactLogix Controller 1769-L32E 1769L32E * sealed* Ser A
ALLEN BRADLEY COMPACTLOGIX 1769-L27ERM-QBFC1B 1769L27ERMQBFC1B * SEALED*
ALLEN BRADLEY COMPACTLOGIX 1769-L24ER-QB1B 1769L24ERQB1B * SEALED*
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ALLEN BRADLEY COMPACTLOGIX 1 MB CTLR 1769-L30ERM 1769L30ERM * SEALED 2014*
ALLEN BRADLEY AC SERVO CONTROLLER, 1391B-AA45, 3-PHASE, 230 V - 311344
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Allen Bradley 8600-2567P Operator Panel *AS IS *
Allen Bradley 8520-CCRT Operator Panel CRT
