SST-DN3-PCI-2 SST-DN3-PCI-2  

 PLC實質(zhì)上是一種工業(yè)控制計算機，PLC與計算機的組成十分相似。只不過它比一般的計算機具有更強的與工業(yè)過程相連接的接口，以及更直接的適應(yīng)控制要求的編程語言。從硬件結(jié)構(gòu)看，它由CPU、存儲器、輸入/輸出接口、電源等組成。PLC的基本組成框圖如圖1所示。下面對PLC控制系統(tǒng)的主要硬件部分進(jìn)行介紹。

1

  1）、*處理器（CPU）
    一般由控制器、運算器和寄存器組成，這些電路都集成在一個芯片內(nèi)。CPU通過數(shù)據(jù)總線、地址總線和控制總線與存儲單元、輸入/輸出接口電路相連接。
    與一般的計算機一樣，CPU是整個PLC的控制中樞，它按PLC中系統(tǒng)程序賦予的功能指揮PLC有條不紊的進(jìn)行工作。CPU主要完成下述工作：
    （1）接收、存儲用戶通過編程器等輸入設(shè)備輸入的程序和數(shù)據(jù)。
    （2）用掃描的方式通過I/O部件接收現(xiàn)場信號的狀態(tài)或數(shù)據(jù)，并存入輸入映像寄存器或數(shù)據(jù)存儲器中。
    （3）診斷PLC內(nèi)部電路的工作故障和編程中的語法錯誤等。
    （4） PLC進(jìn)入運行狀態(tài)后，執(zhí)行用戶程序，完成各種數(shù)據(jù)的處理、傳輸和存儲相應(yīng)的內(nèi)部控制信號，以完成用戶指令規(guī)定的各種操作。
    18030235313手機

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 Qq:

鄭娟萍

廈門仲鑫航自動化設(shè)備有限公司

（5）響應(yīng)各種外圍設(shè)備(如編程器、打印機等）的請求。
    PLC采用的CPU隨機型不同而不同， 目前，小型PLC為單CPU系統(tǒng)，中型及大型則采用雙CPU甚至多CPU系統(tǒng)。目前，PLC通常采用的微處理器有三種：通用微處理器、單片微處理器（即單片機）、位片式微處理器。
    2）、 存儲器
    PLC系統(tǒng)中的存儲器主要用于存放系統(tǒng)程序、用戶程序和工作狀態(tài)數(shù)據(jù)。PLC的存儲器包括系統(tǒng)存儲器和用戶存儲器。
    （1）系統(tǒng)存儲器
    系統(tǒng)存儲器用來存放由PLC生產(chǎn)廠家編寫的系統(tǒng)程序，并固化在ROM內(nèi)，用戶不能更改。它使PLC具有基本的功能，能夠完成PLC設(shè)計者規(guī)定的各項工作。系統(tǒng)程序質(zhì)量的好壞很大程度上決定了PLC的性能。
    （2）用戶存儲器
    用戶存儲器包括用戶程序存儲器（程序區(qū)）和數(shù)據(jù)存儲器（數(shù)據(jù)區(qū)）兩部分。用戶程序存儲器用來存放用戶針對具體控制任務(wù)采用PLC編程語言編寫的各種用戶程序。用戶程序存儲器根據(jù)所選用的存儲器單元類型的不同（可以是RAM、EPROM或EEPROM存儲器），其內(nèi)容可以由用戶修改或增刪。用戶數(shù)據(jù)存儲器可以用來存放（記憶）用戶程序中所使用器件的ON/OFF狀態(tài)和數(shù)據(jù)等。用戶存儲器的大小關(guān)系到用戶程序容量的大小，是反映PLC性能的重要指標(biāo)之一。

WELCON 3148 "POLE BAG" SYRINGE (BOX OF 30) ***NIB***

CIPA 18000 MULTI BRAND MULTI SIDE CAR MIRROR CHROME 5.25" X 3.75" ***NIB***

CIPA 41000 MULTI BRAND MULTI SIDE TRUCK & VAN MIRROR 5.5" X 8.5" ***NIB***

KENTROX DDMDJZ1EMA/01-78270001 12 SLOT CARD RACK ***XLNT***

STERNSIEBELEMENT 062-056-02052 FILTER ELEMENT ***NNB***

STERNSIEBELEMENT 062-056-02052 FILTER ELEMENT ***NIB***

DUALITE UFO-6W FLUORESCENT EMERGENCY BALLAST ***NIB***

HUBBELL SHC1038 WIRE CONNECTOR ***NIB***

B-LINE BCH32 J-HOOKS GALVANIZED STEEL WITH CLIPS (LOT OF 7) ***NNB***

CIPA 46100 GMC CHEVY CK PICK-UP SUBURBAN MULTI SIDE MIRROR ***NIB***

CIPA 31000 DAY/NIGHT REARVIEW MIRROR (LOT OF 2) ***NIB***

CIPA 48097/F85Z17683BAA/FO1320178 FORD DRIVERS SIDE MIRROR ***NIB***

CIPA 56100 GMC CHEVY CK PICK-UPS SUBURBAN TAHOE YUKON  PASSENGER MIRROR **NIB**

CIPA 56000 CHEVY GMC CK PICK-UPS SUBURBAN TAHOE YUKON DRIVERS MIRROR ***NIB***

CIPA 26095/15024357/GM1320188 CHEVY DRIVERS SIDE MIRROR ***NIB***

CIPA 45192/F7TZ 17682 AAB/FO1321115 FORD PASSENGER SIDE MIRROR ***NIB***

CIPA 27405/15697336/GM1321170 CHEVY C10 PASSENGER SIDE MIRROR ***NIB***

CIPA 19601/K630111G26/K6301-11G26/NI1321106/955-203/128-52680R NISSAN MIRROR*NIB

CIPA 46400/55022241/CH1321114 DODGE DRIVERS SIDE MIRROR ***NIB***

CIPA 46410/55022240/CH1321114/AA-123-RMC DODGE PASSENGER SIDE MIRROR ***NIB***

CIPA 16092/87940-06030-CO/87910-33040-CO/TO1320113 CAMRY DRIVERS MIRROR **NIB**

CIPA 47410/55076612/CH1321132/9162555 1997 DODGE RAM PASSENGER MIRROR ***NIB***

CIPA 19600/9630211G70/96302-11G70/9630211G00/96302-11G00/NI1320106 MIRROR *NIB*

CIPA 55100/15036360/GM1321122/955-192 CHEVY/GMC PASSENGER SIDE MIRROR ***NIB***

SWAGALOK SAE 100R8 INTERCONNECT HOSE ***XLNT***

UM2502-9 ACTUATOR UNDERMOUNT BOWL ***XLNT***

TRI-ROTOR 20D ROTARY PISTON PUMP ***NNB***

WARD #150 PIPE FITTING/UNION (LOT OF 4) ***XLNT***

FLUITEK EPA12NFC PLEATED MEDIA LIQUID FILTER **NIB**

PARKER SAE100R2AT-16/EN853 HYDRAULIC HOSE (LOT OF 2) ****XLNT****

NORDSTROM 400CWP/FIG3422 VALVE APPROX. 2" OPENING ***XLNT***

7/8"-9 x 4" BOLT GRADE 5 (LOT OF 15) ***NNB***

KLEINEWEFERS EF 4-50 AIR BREATHER (LOT OF 2) ***NIB***

BIMBA BFT-172-D STAINLESS PNEUMATIC CYLINDER ***NNB***

ANNUBAR DCR - 15 FLOW METER STATION ASSEMBLY FOR 3" PIPE ***NIB***

REXROTH Z1S-10-P1-32/V Z1S10P1-32/V CHECK VALVE ***NNB***

HELWIG CARBON BRUSH  6677 (LOT OF 6) ***NNB***

HELWIG CARBON BRUSH  6677 (LOT OF 12) ***NNB***

RED DOT BC-6 CONDUIT BODY 2" C-STYLE ***NIB***

RED DOT CONDUIT BODIES 1-1/4" LR STYLE ALUMINUM (LOT OF 3) ***NNB***

NIBCO F-617-0/125-SWP-200-W06 IBBM GATE VALVE 3" ***XLNT***

CORCOM 30VSK6 POWER LINE FILTER 30A 120/250V ***XLNT***

MBC 235-RF 4"/4 INCH BRONZE/BRASS GATE VALVE ***NNB***

7/8"-9 x 4" BOLT GRADE 5 (LOT OF 20) ***NNB***

CHICAGO CONTROLS MR1-JR-4 1/2 X 6-1-FM-NC CYLINDER ***XLNT***

NORGREN S-27024C PNEUMATIC CYLINDER 2-1/2 X 17 ***XLNT***

S&W NTS-5 STEEL LEVELING MOUNT & THREADS (LOT OF 4) ***XLNT***

FESTO DMM-25-5-P-A COMPACT CYLINDER ***NNB***

VICKERS XTL03B10 PRESSURE REDUCING VALVE ***NNB***

VXI GSH20 GOLD SERIES HEADSET ***NIB***

3M 3579-0100 PINLESS SHROUD (BAG OF 100) ***NIB***

GN NETCOM 605 FLEX HEADSET ***NIB***

3M 3579-0100 PINLESS SHROUD (BOX OF 100) ***NIB***

BAILEY BCN56211361 PRESS XMTR 0-100 PSI ***XLNT***

SUN HYDRAULIC BBA/S VALVE BODY CETOP5 SG IRON ***NIB***

DENISON A4D01-35-203-03-02-00A1-W01327-026-34079-P ***NNB***

CROSBY CLIPS 5/8" BLUE U-BOLTS (LOT OF 4) ***NNB***

AMAT 3030-01882 MFC 1660 5SLM N2 1/4VCR MTL NC HOV CDE , USED

AMAT 0150-04723 CABLE ASSY EMC COMP PUMP , NEW

AMAT 3030-01878 MFC 1660 500SCCM N2 1/4 VCR MTL NC VERT , USED

AMAT 0150-35539 CABLE ASSY GAS PANEL POWE , NEW

AMAT 0150-12116 CABLE ASSY H.P. DC SOURCE , NEW

UNIT UFC-1660 Range: 5 SLM Gas: N2 , USED

AMAT 0140-05082 H/A CONTBULK HEADSWEEP, NEW

AMAT 0140-01880 CABLE, SENSOR-CONTROL, BLKHD 3, SCRUBBER, WORKING

AMAT 0140-14852 HARNESS ASSY MAINFRAME I/O DIS, NEW

AMAT 0140-01879 CABLE, SENSOR-CONTROL, BLKHD 2, SCRUBBER, WORKING

AMAT 0015-77080 HARMONIC DRIVE, BASE ASSEMBLY, NEW

AMAT 0190-37233 SLURRY DISPENSE MODULE, 20-200CCM AFC-8150-T21S1-072-P-001, NEW

AMAT 0050-82774 HOSE ASSEMBLY COOLIING WATER RETURN OZONE SACVD PROD, NEW

Nupro SS-BNV51 Valve , USED

AMAT 0040-32905 REV.002 150MM WTM ESC, NEW

AMAT 0150-13155 CABLE POWER 5 KVA XFMR TO, NEW

AMAT 0140-77895 CABLE, FLOW SWITCHES, DI WATER RINSE, WORKING

Nupro SS-BNV51-AB Valve 93840 , USED

Nupro SS-4BK-V51 Valve , USED

AMAT 3870-03033 VALVE MNL BALL 2-WAY 1/4FNPT SST W/OVAL-HDL SS-44F4-K , USED

AMAT 0140-04838, WORKING

AMAT 0150-77312 C/A LEAK SENSOR INTERCONNECT 50FT, WORKING

MKS 1640A-14387 Mass Flow Controller 6000 SCCM 13%O3/O2 , USED

AMAT 0140-77419 CABLE, LOWER PNEUMATIC, USED

AMAT 3800-01116 RGLTR AIR PRESS 7-100PSIG 1/4NPT SST , USED

TOKYO ELECTRON 3884-200004-11 FORMULA TTLD13-11 FIMS-F PCB , USED

ULTRA ATA133 CA ASSY PATA133 ROUND 24-12, NEW

BROOKS AUTOMATION 002-9791-03 REV : D, NEW

TOKYO ELECTRON 3895-120320-11 FORMULA TTLI22-11 MCIL-SL PCB , USED

TOKYO ELECTRON 3880-200112-11 FORMULA TTLD10-12 F-DI_32 PCB , USED

AMAT 0140-77149 REV : A, NEW

AMAT 0150-18035 C/A EMC COMP, PUMP UMBILI, NEW

MITSUBISHI MR-J2S-10B-PR113 AC SERVO DRIVER, USED

MITSUBISHI MR-J2-03B5-S125 AC SERVO DRIVER, USED

malema LFC-7322-21322-212-004 LIQUID FLOW CONTROLLER, WORKING

SMC SRF50-T19 FLOUROPOLYMER REGULATOR, WORKING

AMAT 0020-79171 BEARING CLAMP, USED

AMAT 0040-87712 LIFT PIN NAIL HEAD PRODUCER ETCH  , NEW

AMAT 0190-33934 IV-2410AV-02H-N Injection Valve, WORKING

YASKAWA ELECTRIC CORPORATION JUSP-RA05 RESISTOR UNIT, USED

AMAT 0010-20258 MAGNET ASSY A-TYPE 13 TI, USED

AMAT 0020-77398 ARM 2, LOADCUP, NEW

AMAT 0021-09718 LINER,SLIT VALVE , Refurbished

AMAT 0090-03592 SENSOR ASSY PAD CONDITIONER UP CMP REFLE , NEW

ROHM&HAAS 10228745 IC1010(TM) A2 PAD FD1 20" ACAJ; 9G01, NEW

AMAT 0090-77096 ASSY, RTD ELECTRONIC, NEW

AMAT 1100-A0110 Spectra-Physics LASER W F.O CABLE, 0129-9535-23S, USED

AMAT 0140-24291 REV : 03 , NEW