PLC作用：

PLC是多數(shù)工業(yè)控制和工廠自動化系統(tǒng)的核心組成部分，通常被稱為工廠的“大腦"，PLC 通過接收和處理來自傳感器和機器的數(shù)據(jù)來實現(xiàn)廣泛的功能，然后使用這些數(shù)據(jù)來控制和制動外部設(shè)備。除此之外，成功的設(shè)計必須具備可靠性、系統(tǒng)穩(wěn)定性以及與連接的自動化系統(tǒng)的互操作性。

現(xiàn)在工業(yè)上使用可編程邏輯控制器已經(jīng)相當(dāng)接近于一臺輕巧型計算機，甚至已經(jīng)出現(xiàn)集成個人計算機(采用嵌入式操作系統(tǒng))與PLC結(jié)合架構(gòu)的可編程自動化控制器(Programmable Automation Controller，簡稱PAC)，能透過數(shù)字或模擬輸入/輸出控制機器設(shè)備、制造處理流程及其他控制的電子系統(tǒng)。

1、用于開關(guān)量控制

目前，PLC的首要目標(biāo)，也是別的控制器無法與其比擬的，就是它能方便并可靠地用于開關(guān)量的控制。用PLC進行開關(guān)量控制實例是很多的，冶金、機械、輕工、、紡織等等，幾乎所有工業(yè)行業(yè)都需要用到它。

2、用于模擬量控制

模擬量，如電流、電壓、溫度、壓力等等，它的大小是連續(xù)變化的。工業(yè)生產(chǎn)，特別是連續(xù)型生產(chǎn)過程，常要對這些物理量進行控制。用PLC實現(xiàn)模擬量控制是*可能的。

PLC進行模擬量控制，要配置有模擬量與數(shù)字量相互轉(zhuǎn)換的A/D、D/A單元。它也是I/O單元，不過是特殊的I/O單元。

3、用于運動控制

實際的物理量，除了開關(guān)量、模擬量，還有運動控制。PLC可接收計數(shù)脈沖，加上PLC有數(shù)據(jù)處理及運算能力，若再配備相應(yīng)的傳感器(如旋轉(zhuǎn)編碼器)或脈沖伺服裝置，則*可以依NC的原理實現(xiàn)種種控制。

4、用于數(shù)據(jù)采集

隨著PLC技術(shù)的發(fā)展，其數(shù)據(jù)存儲區(qū)越來越大。PLC還可配置上小型打印機，定期把DM區(qū)的數(shù)據(jù)打出來。PLC也可與計算機通訊，由計算機把DM區(qū)的數(shù)據(jù)讀出，并由計算機再對這些數(shù)據(jù)作處理。這時，PLC即成為計算機的數(shù)據(jù)終端。

5、用于信號監(jiān)控

PLC自檢信號很多，內(nèi)部器件也很多，多數(shù)使用者未充分發(fā)揮其作用。其實，*可利用它進行PLC自身工作的監(jiān)控，或?qū)刂茖ο筮M行監(jiān)控。

FESTO Fitting; push-in ELBOW, QSLL-G1/2-12, 186136, LOT OF 20, SHIPSAMEDAY

FESTO Fitting, push-in, QS-G3/8-12, 186103, LOT OF 69, SHIPSAMEDAY

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Festo Filter Regulator, MS4-LFR-1/8-D7-CRM-AS, 529168, SHIPSAMEDAY#1325B7

FESTO Fieldbus Controller, CP-FB13-E, 174337, SHIPSAMEDAY#1545H3

FESTO EVALUATION UNIT SMH-AE1-PS3-M12, 175708, Shipsameday#1558AD

FESTO EVALUATION UNIT SMH-AE1-PS3-M12, 175708, Shipsameday#1558AC

FESTO DEVICENET INTERFACE CPV18-GE-DN-8, W107, 546202, CPV18GEDN8 #115A

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FESTO 192313, LR-3/8-D-7-I-MIDI PRESS REGULATOR, LR-3/8D7IMIDI, #1371Q

FESTO 164956, FRM-D-MAXI BRANCHING MODULE 4-PORT REGULATOR, #106N

Festo 156518, ADVU2025PA, ADVU-20-25-P-A, Shipsaneday #137G13

Festo 12009827 N316, MFH-3-M5-SET, SA-33521, Pmax=10bar/145psi #1635S

FERROTEC Bi-directional Temperature Control, FTC100, SHIPSAMEDAY#1222C1

Ferraz Shawnmut Distribution Block 68083, 600V, pdb, Shipsameday " Rack D #D29

Ferraz Shawnmut Distribution Block 68063, 600V, PDB, Shipsameday, Rack D #D26

Ferraz Shawmut Protistor S300465, 700VAC 630A, A070URD32TTI0630, #1545F

Ferraz Shawmut Protistor S300465, 700VAC 630A, A070URD32TTI0630, #1545F

FERRAZ SHAWMUT PC44UD75V22CTD PROTISTOR FUSES, 750VAC URD 2200A #1536Y

Ferraz Shawmut A50P50-1DS, A50P501DS, Box Of 10, ShipSameDay#1650S

FERRAZ SHAWMUT 68063 POWER DISTRIBUTION BLOCKS, 3-POLE, 600VAC, NNB, Rack D #D25

Ferraz Protistor M300621, 1250VAC, 400A, Shipsameday W/2-3daysshipping #1556F

Feedthrough on a NW50 KF Flange X 15 Pin, 15D-K50, P108205, SHIPSAMEDAY#1610A

FCB-A0-AG1, FCB-V0-ASV1, FCB-AV-AXG1, Shipsameday#1169L

FAULHABER Schonaich 3540K024C, 460, Ship Same Day #1649MA

FAULHABER Schonaich 3540K024C, 024, Ship Same Day #1649K

FAULHABER MINIMOTOR SA, 982155 358, 22/2K-17,2:1, 982155358, SHIPSAMEDAY#1606Z4

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FAULHABER MINIMOTOR SA, 961382, 15/522.1/226, SHIPSAMEDAY#1606Z8

FAULHABER MINIMOTOR SA, 2251F012S, 22/2-30,7:1, 1.589815, SHIPSAMEDAY#1606Z2

FAULHABER MINIMOTOR SA, 0282K260, 22/2-54,6:1, SHIPSAMEDAY#1606Z3

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FAULHABER Gearmotor 1524A0301, 1524E012S, SHIPSAMEDAY#N13

FAULHABER Gear Encoder, 2342S024CR, SHIPSAMEDAY#1606Z1

FASTEK INLINE GAS FILTER 0.01 MICRON, 1/4" VCR, SHIPSAMEDAY#1628D3

FASCO MOTOR 71622502, 62B1 115/208-230 60HZ .75/.38A CLASS B #1605A2

FASCO AC MOTOR 230 VAC U62B1 71625535 2850 RPM .4amp Class B, #1603A1 BOX 1

Fanuc INPUT MODULE 120VAC 16 PT ISOLATED, IC697MDL240C, SHIPSAMEDAY#1168G

FANUC IC675PDM841A PLC BUSSTOP PROFIBUS STATION, 8 IN, 4 OUT #109A

Fanuc Expansion Module A03B-0808-C200, BMD88P1, Shipsameday#1608Z5

Fanuc Cable 3DV RCC 7M, A660-2005-T255#L7R003A, XGMF14552, XGMF-14552 #142TA

Fanuc A16B-2200-0450/03B, Map 3.0, A16B-1600-0400/01A, SHIPSAMEDAY#1168F

Fanuc A16B-1210-0220/078B, A320-1210-T224/03, Shipsameday #128A15