福建中立恒自動(dòng)化設(shè)備有限公司

1．輸入/輸出單元

輸入/輸出單元通常也稱I/O單元或I/O模塊，是PLC與工業(yè)生產(chǎn)現(xiàn)場(chǎng)之間的連接部件。

PLC通過(guò)輸入接口可以檢測(cè)被控對(duì)象的各種數(shù)據(jù)，以這些數(shù)據(jù)作為PLC對(duì)被控制對(duì)象進(jìn)行控制的依據(jù)；同時(shí)PLC又通過(guò)輸出接口將處理結(jié)果送給被控制對(duì)象，以實(shí)現(xiàn)控制目的。

由于外部輸入設(shè)備和輸出設(shè)備所需的信號(hào)電平是多種多樣的，而PLC內(nèi)部CPU的處理的信息只能是標(biāo)準(zhǔn)電平，所以I/O接口要實(shí)現(xiàn)這種轉(zhuǎn)換。

I/O接口一般都具有光電隔離和濾波功能，以提高PLC的抗干擾能力。另外，I/O接口上通常還有狀態(tài)指示，工作狀況直觀，便于維護(hù)。

PLC提供了多種操作電平和驅(qū)動(dòng)能力的I/O接口，有各種各樣功能的I/O接口供用戶選用。I/O接口的主要類型有：數(shù)字量（開(kāi)關(guān)量）輸入、數(shù)字量（開(kāi)關(guān)量）輸出、模擬量輸入、模擬量輸出等。

常用的開(kāi)關(guān)量輸入接口按其使用的電源不同有三種類型：直流輸入接口、交流輸入接口和交/直流輸入接口。

常用的開(kāi)關(guān)量輸出接口按輸出開(kāi)關(guān)器件不同有三種類型：是繼電器輸出、晶體管輸出和雙向晶閘管輸出。

繼電器輸出接口可驅(qū)動(dòng)交流或直流負(fù)載，但其響應(yīng)時(shí)間長(zhǎng)，動(dòng)作頻率低；而晶體管輸出和雙向晶閘管輸出接口的響應(yīng)速度快，動(dòng)作頻率高，但前者只能用于驅(qū)動(dòng)直流負(fù)載，后者只能用于交流負(fù)載。

PLC的I/O接口所能接受的輸入信號(hào)個(gè)數(shù)和輸出信號(hào)個(gè)數(shù)稱為PLC輸入/輸出（I/O）點(diǎn)數(shù)。I/O點(diǎn)數(shù)是選擇PLC的重要依據(jù)之一。當(dāng)系統(tǒng)的I/O點(diǎn)數(shù)不夠時(shí)，可通過(guò)PLC的I/O擴(kuò)展接口對(duì)系統(tǒng)進(jìn)行擴(kuò)展。

2．通信接口

PLC配有各種通信接口，這些通信接口一般都帶有通信處理器。

PLC通過(guò)這些通信接口可與監(jiān)視器、打印機(jī)、其它PLC、計(jì)算機(jī)等設(shè)備實(shí)現(xiàn)通信。

PLC與打印機(jī)連接，可將過(guò)程信息、系統(tǒng)參數(shù)等輸出打??；與監(jiān)視器連接，可將控制過(guò)程圖像顯示出來(lái)；與其它PLC連接，可組成多機(jī)系統(tǒng)或連成網(wǎng)絡(luò)，實(shí)現(xiàn)更大規(guī)模控制。

與計(jì)算機(jī)連接，可組成多級(jí)分布式控制系統(tǒng)，實(shí)現(xiàn)控制與管理相結(jié)合。遠(yuǎn)程I/O系統(tǒng)也必須配備相應(yīng)的通信接口模塊。

3．智能接口模塊

智能接口模塊是一獨(dú)立的計(jì)算機(jī)系統(tǒng)，它有自己的CPU、系統(tǒng)程序、存儲(chǔ)器以及與PLC系統(tǒng)總線相連的接口。

它作為PLC系統(tǒng)的一個(gè)模塊，通過(guò)總線與PLC相連，進(jìn)行數(shù)據(jù)交換，并在PLC的協(xié)調(diào)管理下獨(dú)立地進(jìn)行工作。

PLC的智能接口模塊種類很多，如：高速計(jì)數(shù)模塊、閉環(huán)控制模塊、運(yùn)動(dòng)控制模塊、中斷控制模塊等。

以下鏈接皆有貨

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Piovan Filter Element 6151210

Piovan Plastic Technologies Keypad Controller Convector960A374

Pittman Hydraulic Directional Control Valve 14204D535-R1 12564824 VDC

PL COUNTER CARD PWB 117040-002 REV 002

PLANAR PLL1500M 15" LCD MONITOR

PLANAR SYSTEMS EL8358HR INDUSTRIAL PANEL DISPLAY BOARD996-0107-00 REV E

PLANETROLL GEARBOX PD040 RATIO i:5 n: 3000 1/MIN n2: 600 1/MINm2: 4,5 MN

PLASTIC-O-MATIC PRH100V-PV PRH100VPV PRESSURE REGULATOR VALVE 1"NPT  

PLAST-O-MATIC ULTRA-PURE PVDF GAUGE GUARD GGMUV001-PF-C5GGMUV001PFC5 1"

PLEXUS INK SYSTEM INTERFACE I/FACE CIRCUIT BOARD CARD 2501525015A 25115

PLIDCO 774503 2" 150 FLANGE GASKET REPAIR RING CLAMP

PMI MOTORS SWITCHING SERVO AMPLIFIER 0088008003

PNEUMADYNE INC MANIFOLD VALVE M20-250-4-SS ADJ 25/100R

PneumaTech Actuator SDAC-40 VA-001687 150 PSIG w. 3" ButterflyValve VA-001751

POA Power Operational Amplifier 82G147080N

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POLARIS IT500 , IT 500 Multi-Tap Connector, Insulated

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POLYSONICS ERS91-F LIQUID LEVEL FLOW METER POWER 110VAC OUTPUT4-20 mA

POLYTECH WELDED BELT 330T1003360 130"-132" L X 13" W

POROUS MEDIA PM FEW2630M02ET PLEATED CARTRIDGE FILTERELEMENT

POROUS MEDIA PM FEW2636M02ET-1 PLEATED CARTRIDGE FILTERELEMENT

POROUS MEDIA PM FEW2636M10ET-1 PLEATED CARTRIDGE FILTERELEMENT

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PORT DIGITAL P2 CABLE CONNECTOR INFP-2000-DC3 INFP2000DC3

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PORT ELECTRONICS SERIAL PRINTER PR2201

Porta-Strobe Strobe Scope DS-12V DS12V

PORTER CABLE ROUTER 5182 EHD TYPE 3 5181 BASE -

PORTER PEERLESS PERMANENT MAGNET DC -0 DPM56PF4230V

PORTWELL ORION-300DX/24 DC TO DC POWER SUPPLY +19V~+32VDC300W

POSITEC TEACH PENDANT PRC 31 PRC0000

POSITEC TEACH PENDANT PRC 31 PRC31

POSITEC TEACH PENDANT PRC 31 PRC31 PRC0003 PRC 31 M.K1PRC31MK1

 POST GLOVER DYNAMIC BREAKING RESISTOR T67R2K52 2520 WATT67 OHMS

POTTER & BRUMFIELD I/O CIRCUIT BOARD 2I0-24 2IO-24

POWAIR PRESS FEEDS A PNEUMATIC AIR FEEDER

Powell Micon Hand Held Configurator HHC-32:A1B2 HHC-32HHC:A1B2

Powell Process Systems ADT-200 ADT200 24VDC

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Power Control System Power Supply S216-R S216R 24V 10 A Amp 220VAC

Power Control Systems Rack/Chassis PSU20 220 VAC 24VDC 20 AAmp

POWER ELECTRONICS M146 MICRO-SPEED DRIVE BOARD MSPR-15A VER2

POWER ELECTRONICS M146 MICRO-SPEED DRIVE COVER ONLY

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POWER ELECTRONICS PE M1546H 15HP MOTOR DRIVE 460V 115VCONTROL

POWER FLOW CARLSON 3731K REPAIR KIT FOR TSCB150  

POWER GENERAL POWER SUPPLY 4 41554E6169

POWER PRODUCTS NPB 4 NPB4 89:1 OUTPUT RATIO PRESSURE INTENSIFIERCYLINDER

Power Source Power Supply FHF15SX-U FHF15SXU 115/230 VAC 4.9 AmpPF0.99-0.96

Power Source Power Supply WRF15SX-U 115/230V 7.5 A Amp

Power Technology Power Supply L92 0.23 A Amp 0.006 A Amp 115/230VAC

 POWER VALVE DIRECTIONAL VALVE HD-3C60-G06-P-DHD3C60G06PD

POWER-ONE MAP80-1024 DC POWER SUPPLY 110V 60Hz 2.5A

POWERS 591-8073 039220 1"NPT FLOWRITE ACTUATOR VALVE 10SPRING

POWERS PROCESS CONTROL TEMPERATURE CONTROLLER 357-B000 120VAC4VA 50/60Hz #2

POWERS PROCESS CONTROL TEMPERATURE CONTROLLER S357-B000 120VAC4VA

POWERS PROCESS CONTROLS FLOWRITE II CONTROL VALVE593-SM050SSMT46 1/2"NPT

POWERS PROCESS CONTROLS FLOWRITE II CONTROL VALVE593-WT050STMB460S 1/2"NPT

POWERS PROCESS CONTROLS FLOWRITE II CONTROL VALVE593-WT100WMW46P 1"NPT 250

Powers Selector Switch 3 028835

POWERSTAT 126U PANEL MOUNT VARIABLE AUTOTRANSFORMER BP124201120V 50/60Hz 1PH

POWERSTAT F236B VARIABLE TRANSFORMER 240V 0-280A 1PH 50/60Hz10KVA

POWERTEC DIGIMAX FREQUENCY SYNTHESIZER BOARD 4000-153215-001

POWERTEC DISPLAY BOARD 4000-53205001

POWERTEC PROCESSOR INTERFACE DRIVE CIRCUIT BOARD 4001-148230-001REV. C

POWERTRAN CORPORATION 1PH TRANSFORMER F635T1000 1000 VA PRI:120VSEC:95V

POWERVOLT POWER SUPPLY BVU-75FU6402-2 BVU75FU64022 10A 10 A AMP220/240 VAC

POWERWARE EXIDE ELECTRONIC PLUS DRIVE POWER SUPPLY FRONT PANELSPA 101614410-S15

PP&S SLC KIT CASING 3X1.5X13 D814/824 000SLC-00 78643772PUMP PART

PPT PATERN PROCESSING CIRCUIT BOARD 241-0074 REV D 2410074

PPT VISION ANALOG PASSPORT 661-0117 6610117 HS3 51-74288751-742891 -

PPT VISION CIRCUIT BOARD CARD 411-0089 4110089

PPT VISION DSL-6000 DIGITAL CAMERA 661-0153 W/ ZOOM 7000NAVITAR

PPT VISION DSL-7000 DIGITAL CAMERA 661-0310 REV 1 w/ ZOOM 7000NAVITAR

PPT VISION INC STROBE POWER SUPPLY 661-0053-60 100-240VAC50-60Hz

PPT VISION MODULE ASSEMBLY 661-0230 6610230

PPT Vision Photoelectric Receiver 661-0113-SB 6610113SB

PPT VISION PHOTOELECTRIC RECEIVER 661-0113-SB 6610113SB

PPT VISION POWER SUPPLY STROBE LIGHT 661-0172

PPT Vision Strobe Light Controller 661-0114 6610114

PPT VISION SYSTEM IMPACT C30 PROCESSOR 661-0326-C20 REV A224VDC

PR ELECTRONICS 2289A SIGNAL CALCULATOR 2289 24V

PRC CORP. PC LASER INTERFACE BOARD PCB ASSEMBLY C7-940-075PB-1015 REV 0 VER 1.0

PRC CORP. PC LASER INTERFACE BOARD PCB ASSEMBLY C7-940-075-83PB-1015

PRECISION CONTROL 9722-21 972221 115V 1.5A METERING CHEMICALFEED PUMP

Precision Devices Digital Surfometer PDA-12 PDA12 115 V Volt

Precision Electronics Circuit Board 701-9664 7019664

PRECISION FILTER INC CIRCUIT BOARD CARD 163592-2

PRECISION FILTER INC CIRCUIT BOARD CARD 165236

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PRINTRONIX POWER SUPPLY00 INPUT 100-240VAC50/60HZ 6A A AMPS

PRINTRONIX T5000 T5204 THERMAL BARCODE LABEL PRINTER W/ DATAVALIDATOR SV100

PRINTRONIX T5000 T5204E THERMAL BARCODE LABEL PRINTER 120/240VAC350W 4 A AMP

PRINTRONIX T5000 T5204E THERMAL BARCODE LABEL PRINTER W/ DATAVALIDATOR PV100

PRINTRONIX T5000 T5204R THERMAL BARCODE LABEL PRINTER 100/240VAC350W 4 A AMP

PRINTRONIX T5000 T5204R THERMAL BARCODE LABEL PRINTER W/ DATAVALIDATOR SV100

PRINTRONIX T5000 T5204R THERMAL BARCODE LABEL PRINTER W/ DATAVALIDATOR PV100

PRINTRONIX T5000 T5206 THERMAL BARCODE LABEL PRINTER W/ DATAVALIDATOR PV100

PRINTRONIX T5000 T5206E THERMAL BARCODE LABEL PRINTER W/ DATAVALIDATOR PV100

PRINTRONIX T5000 T5206R THERMAL BARCODE LABEL PRINTER

PRINTRONIX T5000 T5304R THERMAL BARCODE LABEL PRINTER 100/240VAC350W 4 A AMP

PRO FACE GP577R-TC41-24VP DIGITAL OPERATOR INTERFACE2780027-02

PRO LOG PL PWB 114099-004 COUNTER/TIMER CARD REV 0077308B-02

 PRO1 IAQ T805 SINGLE STAGE PROGRAMMABLE THERMOSTAT

PROCESS SYSTEM PANEL CONTROLLER PWB 501277-200 501-277

PROCESS SYSTEM PANEL CONTROLLER PWB 501277-200 501-277 REV H

 Process Systems Emprom CPU 42K 504100

Process Systems PSI-MCC-Slave Brd 5023100

Process Systems Sentry 1545B Totalizer 4 Chan. A-120067

 PROCESS TECHNOLOGY FLUOROPOLYMER HEATER 6HX4429C-PT-II4000W 480V 7A 3PH

 PROCON 103E035R31BA HYDRAULIC PUMP 170 PSI

PROCON ROTARY VANE PUMP 104E165F11BC BRASS

PROCUNIER TAPPING HEAD MODEL 3 SERIES A13003

PRODEL B216 4085 12310-236 HIGH PRESSURE SODIUM BALLAST 50 WATTS120/ 277 VOLTS

Products Unlimited Contactor HN52AA002 3100-30T728WB 30 A Amp120V Coil 3 PH

PRO-FACE 2780054-03 TOUCH SCREEN PANEL PL6901-T41-HU10100-240VAC

PRO-FACE 2880045-01 OPERATOR INTERFACE TOUCHSCREEN24VDC

PROFACE TOUCH SCREEN PANEL SP-5B41 PFXSP5B41 SP-5500WAPFXSP5500WAD #4

PROFACE TOUCH SCREEN PANEL SP-5B41 PFXSP5B41 SP-5500WAPFXSP5500WAD #5

PROFACE TOUCH SCREEN PANEL SP-5B41 PFXSP5B41 SP-5500WAPFXSP5500WAD #3

PROFACE TOUCH SCREEN PANEL SP-5B41 PFXSP5B41 SP-5500WAPFXSP5500WAD #2

PROFACE TOUCH SCREEN PANEL SP-5B41 PFXSP5B41 SP-5500WAPFXSP5500WAD HAS SCRATCH

PROFILE SYSTEMS P1800 SYSTEM

PROFLOW MORSE EXPLOSION PROOF PARTICULATE FLOW SENSOR LH2N

PROGRESSIVE COMPONENTS WB375 Brass Fitting

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PROGRESSIVE COMPONENTS WB688 Water Blocker Plug Fitting