描述
在實(shí)際應(yīng)用中，經(jīng)常會(huì)遇到I/O點(diǎn)數(shù)不夠的問(wèn)題，可以通過(guò)增加擴(kuò)展單元或擴(kuò)展模塊的方法解決，也可以通過(guò)對(duì)輸入信號(hào)和輸出信號(hào)進(jìn)行處理，減少實(shí)際所需I/O點(diǎn)數(shù)的方法解決。
（1）分時(shí)分組輸入。一般系統(tǒng)中設(shè)有“自動(dòng)”和“手動(dòng)”兩種工作方式，兩種方式不會(huì)同時(shí)執(zhí)行。將兩種方式的輸入分組，從而減少實(shí)際輸入點(diǎn)。如圖1所示。PLC通過(guò)I1.0識(shí)別“手動(dòng)”和“自動(dòng)”，從而執(zhí)行手動(dòng)程序或自動(dòng)程序。圖中的二極管用來(lái)切斷寄生電路。若圖中沒(méi)有二極管，轉(zhuǎn)換開(kāi)關(guān)在“自動(dòng)”，S1、S2、S3閉合，S4斷開(kāi)，這時(shí)電流從L+端子流出，經(jīng)S3、S1、S2形成的寄生回路電流流入I0.1，使I0.1錯(cuò)誤的變?yōu)镺N。各開(kāi)關(guān)串如入二極管后，則切斷寄生回路。
歐美品牌停產(chǎn)的，常用的“PLC”備品備件
我司產(chǎn)品應(yīng)用于以下領(lǐng)域：
1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》
2,《智能平鋼化爐系統(tǒng)制造》
3,《PLC可編程輸送控制系統(tǒng)》
4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》
6,《化工廠藥液恒流量計(jì)算機(jī)控制系統(tǒng)》
7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動(dòng)化控制系列
本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門(mén)子、摩托羅拉、GE發(fā)那科、安川、博世力士樂(lè)，ACSO，力士樂(lè)等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。
7 ADEPT 310 and 840 Robots Robotics
Branson Laser Stand Laser Welder Chiller System Chilli
Kulicke&Soffa K&S SP2100 TAB Bonder K&S K&S Wafer
J-Mar JMAR Precision Systems CMM 52610-01-01-N
JMAR PRECISION SYSTEMS 52610-01-01 CMM
6 Quantronix 0201-03776 Laser System Lot
5 Foton 8030A Video Auto Die Bonders Semiconductor
LDJ Magnetic Analyzer 9600 VSM LTC10
ORBO TECH 360-04-50001 Imaging System
Instron 1122 Electromechanic?al test System
ORBO TECH 360-04-50001 Imaging System
Zumbach USYS 2000 1000 Laser Micrometer
Intergraph FDSP11304 IMA Microscope system
Haumiller Spin Welder Spinwelder 200 CPM
3 GS Kinney KT-150 Vacuum Pump Rotary Piston
INSTRON 1122 Electromechanic?al Test System
4 TECHNIFOR UCS200 METAL STAMPING MARKING SYSTEM 230V
ONAN AC GENERATOR CUMMINS ENGINE 50/60 kw
TREK Washer Film Cleaner 4 Station Inline Cleaner
TREK Washer Film Cleaner 4 Station Inline Cleaner
XYZ Adept Die Bond Epoxy Liquid Dispenser Automation T
Sixtau Wire Harness Assembly Inspection Station Carous
Calsem Group 30T Delta Moulding Press
6 Adept Smartamp 30410-10000
5 LAMBDA PHYSIK HV LASER POWER SUPPLY 28084030 400V
Wabash PC650-50 65 Ton Hydraulic Press 30×24’’
Adept 90402-30013 Robotic Module
Leatherwood Plastics Passivation Strip Station LPF233.
BACHI Multi Coil Winding Machine
HP 43856A X Ray system
Bridgeport Series 1 2 HP Vertical Milling Machine
Best UPS UT3120 PS40 120kVA
Nordson XYZ automated fluid dispensing Paint CNC
XYZ Adept Die Bond Epoxy Liquid Dispenser Automation T
40 Wire Basket Container 44x54x50
Inspect Technologies 8006-R02 Microscope Inspection Ma
JEOL JEM-100cx Electron Microscope TEM Scanning
Corning 09-06 1 SME Fiber Optical Cable 41,000 ft Optic
Hermes Regent GU 3275S OD Grinder Grinding
Despatch HP516 Style V-2 Recirculating Electrical Oven
HP 43855B X Ray system
Electrovert UltraClean II H2O PCB Wash Machine
Walker Scientific Magnetizer HV-10 Electromagnet
Komax Alpha 411 Automatic Crimping Machine Wire
Comparator 89/CMS Optical Comparator
2 Pillarhouse Quadron Solder Dip Tin Machines
HP 8657A Signal Generator 14 units Total
2 Elgar AC Power Source 1751 400SR
7 LAMBDA PHYSIK LASER TECHNIK POWER CONTROLS
2 Diesel Generators PU-710/G&MEP-006A
Adept Cobra 600 Robot Robotic Arm
Adept Technology Cobra 600 Robot Robotic Arm MV-10
Zumbach USYS 1000 Laser Head Micrometer
Zumbach KW-26XY IR Laser Head Micrometer
LORAIN WAA502B INVERTER DC-AC 5 KVA
Totoku TCD-WP-S Magnet wire stripper 8 units
Universal 4836PDH-DC200 Media Blast Machine
Brown&Sharpe Traverse Surface Grinder No1 S148826
DUNHAM-BUSH EM-52-UHF REFRIGERATION COMPRESSOR 6 UNITS
Simpson S3-14 r Step Down Transformer Converter
Adept Cobra 600 Robot Robotic Arm
Adept Technology Cobra 600 Robot Robotic Arm
Adept Cobra 600 Robot Robotic Arm
Adept Cobra 600 Robot Robotic Arm
PMR SYSTEMS ULTRASONIC CLEANER.
Adept Cobra 600 Robot Robotic Arm PA-4
2 CONAIR 18041202 MOLDING DEHUMIDIFYING DRYER 480V 3PH
Ya SIH HTE-807 Cooper Wire Preheater
Kalamazoo FA350A Automatic Cold Saw
Tantec D-71299 Spot Corona Generator Surface Treater
HP 43855A X Ray System
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