国产三级伦理在线,久久久久黄久久免费漫画,成人国产精品日本在线,欧美美最猛性xxxxxx

IC693MDL646

IC693MDL646

IC693MDL646

CPU主要由運(yùn)算器、控制器、寄存器及實(shí)現(xiàn)它們之間聯(lián)系的數(shù)據(jù)、控制及狀態(tài)總線構(gòu)成,CPU單元還包括外圍芯片、總線接口及有關(guān)電路。內(nèi)存主要用于存儲程序及數(shù)據(jù),是PLC不可缺少的組成單元。

在使用者看來,不必要詳細(xì)分析CPU的內(nèi)部電路,但對各部分的工作機(jī)制還是應(yīng)有足夠的理解。CPU的控制器控制CPU工作,由它讀取指令、解釋指令及執(zhí)行令。但工作節(jié)奏由震蕩信號控制。運(yùn)算器用于進(jìn)行數(shù)字或邏輯運(yùn)算,在控制器指揮下工作。寄存器參與運(yùn)算,并存儲運(yùn)算的中間結(jié)果,它也是在控制器指揮下工作。


CPU速度和內(nèi)存容量是PLC的重要參數(shù),它們決定著PLC的工作速度,IO數(shù)量及軟件容量等,因此限制著控制規(guī)模。

I/O模塊

PLC與電氣回路的接口,是通過輸入輸出部分(I/O)完成的。I/O模塊集成了PLC的I/O電路,其輸入暫存器反映輸入信號狀態(tài),輸出點(diǎn)反映輸出鎖存器狀態(tài)。輸入模塊將電信號變換成數(shù)字信號進(jìn)入PLC系統(tǒng),輸出模塊相反。I/O分為開關(guān)量輸入(DI),開關(guān)量輸出(DO),模擬量輸入(AI),模擬量輸出(AO)等模塊。

常用的I/O分類如下:

開關(guān)量:按電壓水平分,有220VAC、110VAC、24VDC,按隔離方式分,有繼電器隔離和晶體管隔離。

模擬量:按信號類型分,有電流型(4-20mA,0-20mA)、電壓型(0-10V,0-5V,-10-10V)等,按精度分,有12bit,14bit,16bit等。

除了上述通用IO外,還有特殊IO模塊,如熱電阻、熱電偶、脈沖等模塊。

按I/O點(diǎn)數(shù)確定模塊規(guī)格及數(shù)量,I/O模塊可多可少,但其最大數(shù)受CPU所能管理的基本配置的能力,即受最大的底板或機(jī)架槽數(shù)限制。

電源模塊


PLC電源用于為PLC各模塊的集成電路提供工作電源。同時(shí),有的還為輸入電路提供24V的工作電源。電源輸入類型有:交流電源(220VAC或110VAC),直流電源(常用的為24VDC)。

底板或機(jī)架

大多數(shù)模塊式PLC使用底板或機(jī)架,其作用是:電氣上,實(shí)現(xiàn)各模塊間的聯(lián)系,使CPU能訪問底板上的所有模塊,機(jī)械上,實(shí)現(xiàn)各模塊間的連接,使各模塊構(gòu)成一個(gè)整體。

Datacom Textron LANcat System6 Cat5e Cat6 Cable Tester

Siecor Corning M90 5000 Fiber Fusion Splicer w Cleaver

Fitel PMX JDSU WaveShifter 300 Optical Circuit WDM New

TTC JDSU Acterna TestPad 2000 T-BERD 2310 2357 DSL

Wavetek Acterna JDSU SDA-5500 w/ SDA-5000 CATV SDA5000

Tektronix TekScope THS720P 100MHz Oscilloscope THS720

Tektronix SM MM Fiber Kit TOP140 TOP150 TOP200 TOP300

Datacom Textron LANcat System6 SM MM Fiber Cat6 Tester

Siecor Corning M7 Fiber Fusion Splicer w/ Cleaver M90

Fluke Microtest OMNIScanner Cat6 OMNI Fiber SM MM

Fluke Microtest OMNIScanner 2 Cat6 OMNI SM MM Fiber

JDSU Acterna Wavetek SDA-5000 CATV QAM SDA5000 SDA 5000

Laser Precision MM Fiber Loss Test Set LP-5000 LP-5150

Sumitomo Type-45S Fusion Splicer Cleaver Type45 Type-45

EXFO FLS-130 MM 1300 Fiber Optic Light Source FLS

Acterna JDSU DSAM-3500B Digital CATV Meter DSAM 3500

FIS OV-PM SM / MM Fiber Power Meter F18513HH OVPM

GN Nettest LP-5025 SM MM Fiber Optic Power Meter LP5025

Laser Precision AM-450 Optical Fiber Identifier AM450

Tempo RIFOCS 558B SM Fiber High Intensity Power Meter

EXFO FVA-60A MM Fiber Variable Attenuator FVA-60 FVA

Agilent HP Sunrise CALAN Star 3010B SLMS CATV 3010

AFL Noyes TURBOTEST 500B SM Fiber Loss Test Set T50B-4

GN Nettest GN-6025 SM Fiber Optical Loss Test Set 6025

FIS F1-1550DLX OV-DPM Deluxe Power Meter OV DPM F1-1550

Sumitomo Type-36 Fiber Fusion Splicer Type 36 Type36

Fluke Networks DTX-1800 Cat5 Cat5e Cat6 Tester DTX1800

TTC JDSU Acterna 2000 Test Pad T-BERD 2209 TBERD DS3 T1

Sumitomo Type-36 Fiber Fusion Splicer Cleaver Type 36
@CALIBRATED@US?F-21@Core Alignment@60 Day Warranty@

Siecor Corning CFS Fusion Splicer & SM Fiber OTDR Plus

FiTeL S122A Handheld Fusion Splicer Fiber S122 Cleaver

Anritsu Site Master S331B Cable Antenna SiteMaster S331

Fluke Networks OneTouch Series II 10/100 Network Tester

Fluke 105B ScopeMeter Series II 100MHz Scope Meter 105

JDSU Acterna Wavetek SDA-4040D CATV SDA4040D SDA 4040D

Siemon Cabling MT-RJ Fiber Termination System w Cleaver

Laser Precision LP-5100 MM Modulated LED Light Source

EXFO FOS-120A MM 850/1300 Fiber Optic Light Source FOS

Fluke Microtest MicroScanner Pro Network Cable Tester

Fluke Microtest FiberLight FiberEye MM Test Kit Fiber

Fluke Microtest FiberEye Multimode Fiber Power Meter

Fiber Optic Inspection Tool Kit w/ Fiberscope

EXFO BRT-320A Fiber Optic Back-Reflection Meter BRT320A

Acterna Wavetek JDSU SDA-5000 CATV SDA5000 QAM RvrSwp

USFiberOptic USF-21 High Precision Fiber Cleaver New

Leviton Fiber Optic Tool Kit With 200x Fiberscope

Wavetek LANTEK PRO XL Cat5 Cable Tester Certifier

Agilent Wirescope 155 Cat5e Multimode Fiber Certifier

Fluke Networks 672 LANMeter Cat5 Cat5e Network Analyzer

Corning Siecor FuseLite Fiber Termination Systm Cleaver

NOYES OPM 1-2C & GN Nettest LP-5150 MM Fiber Test Kit

EXFO FOT-900 SM Fiber Optic Test System FOT 900 FOT900

EXFO FOT-910 SM Fiber Optic Test System FOT 910 FOT910

Anritsu Site Master S332B Cable Antenna SiteMaster S332

Fluke Networks DSP-4300 Cat5e Cat6 Cable Tester DSP4300

Agilent Wirescope 350 Cat5 Cat5e Cable Certifier

Fluke DSP-4300 Cat6 DSP4300 FTA410 MM Fiber DSP-FTA410

JDSU Acterna DSAM-2500B Digtal CATV Meter DSAM2500 DSAM

Wavetek Acterna JDSU SDA-5000 CATV PthTk RvrSwp SDA5000

Fluke 196 ScopeMeter Oscilloscope Scope Meter 196B

JDSU T-BERD 6000 E8126VSRe SM Fiber OTDR 8126 VSRe VFL

Acterna Wavetek HCU-400 4-Slot PathTrak Controller HCU

GN Nettest GN-6005 GN-1315 SM Fiber Loss Test Set 6005

GN Nettest CMA4000 OTDR CMA4425 SM Fiber CMA 4000 VFL

Fluke Networks 990DSL Series 2 CopperPro Tester 990 DSL

Wavetek Ideal LT8600 Cat5 Cat5e Cat6 Cable LT-8600

IDEAL LANTEK 6 Cat5e Cat6 Cable Tester Certf LANTEK6 6A

EXFO FiberBasix 500 SM MM Fiber Loss Test Set ELS-500

FiTeL S175 V2000 Fusion Splicer & Siecor OTDR Plus VFL

Acterna Wavetek SDA-5000 HCU-400 CATV PathTrak Controll

Acterna JDSU HST-3000C DSL Tester HST-3000 ADSLR Copper

Acterna Wavetek SDA-5000 HCU-400 CATV PathTrak Controll

GN Nettest CMA4000 OTDR CMA4436 SM Fiber 4436 CMA 4000

Sumitomo Type-62 Ribbon Fiber Fusion Splicer Cleaver

Fluke Microtest OMNIScanner Cat5 Cat5e Cat6 Certifier

Siecor Corning SM MM OTDR Plus Multitester II 340M VFL

Sumitomo Type-62 Ribbon Fiber Fusion Splicer Type 62

Fluke DTX-GFM MM Fiber 4 DTX-1200 DTX-1800 DTX GFM GIG

Sadelco MiniMax 600 Signal Level CATV Meter Mini Max

Fluke 1735 Three Phase Power Logger

Tektronix TekScope THS720A 100MHz Oscilloscope THS720

Tempo CableScout TV90 Coax CATV TDR Cable Tester

TTC JDSU Acterna 2000 Test Pad T-BERD 2207 TBERD

Acterna BAT-2700 TestPad Base Station & Air Interface

Wilcom F6230 Optical Fault Locator OFL

Fluke Networks Fiber Optic Ceaning Kit NFC-KIT NFC

Sunrise Telecom CM750 IP Cable Modem Analyzer CM 750

Fluke 700P05 Guage Pressure Module 700 P05 700-P05

Fluke Networks 650 LAN Cable Meter Cat5 Coaxial Tester

Noyes AFL VFS1 Video Fiber Optic Scope VFS 1 300X

Sunrise Telecom SunSet MTT T1 Module SSxDSL-22 SSxDSL

EXFO FTB-200 OTDR MainFrame w/ Power Meter VFL FTB200

Sumitomo Type-25 Fusion Splicer Cleaver Type25 Type-25S

AFL Noyes M600 MM Fiber Mini OTDR M600-K-MM1-xx MM1

Acterna JDSU TTC T-BERD FST-2000 FST-2310 FST 2310 DS3

Siecor Corning M12 Fiber Ribbon Fusion Splicer Cleaver

Fluke Networks DTX-1200 Cat5e Cat6 Cable Tester DTX1200

Fluke Microtest SimpliFiber SM MM Fiber Loss Tester Kit

Siecor Corning M90 4000 Fiber Fusion Splicer w Cleaver

TTC JDSU Acterna 2000 Test Pad T-BERD 2207 TBERD

EXFO MaxTester FOT-920 SM Fiber Tester FOT-922 VFL

JDSU Acterna SM MM Fiber Loss OLP-8 OLS-5 OLS-6 OLP OLS

EXFO MaxTester FOT-920 SM Fiber Tester FOT-922 VFL

Fluke 199 ScopeMeter HandHeld 200Mhz Oscilloscope 199B

Fluke DSP-4300 Cat6 DSP4300 FTA440 MM Fiber DSP-FTA440

Siecor Corning X75 Fiber Optic Fusion Splicer & Cleaver

Fluke Microtest OMNIScanner 2 Certifiber MM Fiber Cat6

Acterna JDSU TTC T-BERD FST-2000 FST-2209 FST 2209 DS3

Fluke DSP-4000 Cat6 DSP4000 FTA440 MM Fiber DSP-FTA440

Fluke Microtest OMNIScanner Certifiber MM Fiber Cat6

Acterna JDSU TTC T-BERD FST-2000 FST-2310 FST 2310 DS1

Agilent Wirescope 350 & 155 MM Fiber Cat6 Certifier

Wavetek Acterna JDSU SDA-5000 CATV PthTk RvrSwp SDA5000

Fluke Microtest OMNIScanner & Pentascanner Certify Cat6

Siecor Corning CFS SM MM Fiber Fusion Splicer Cleaver

Fluke DSP-4000 Cat6 SM / MM Fiber Cable Tester DSP4000

HP Agilent E6000B OTDR E6003A SM Fiber E6007A E6000 VFL

Fluke DSP-4000 & Microtest Pentascanner Certify Cat6

Sunrise Telecom Sunset OCx SONET Analyzer SSOCx-D OC12

Corning OptiVisor 400 MM Fiber OTDR 400-MD25-58 FTB-100

Agilent Wirescope 350 & 155 SM MM Fiber Cat6 Certifier

Fluke DTX-MFM MM Fiber Modules 4 DTX-1200 DTX-1800 DTX

Spirent Tech-X Plus xDSL 10/100 FTTx IP Field Tester

Agilent HP MM Fiber SmartProbe WireScope 350 N2597A-030


Sunrise Telecom SDSL Module SSxDSL-7 SunSet MTT & xDSL

Fluke Networks DTX-NSM Network Service Module DTX NSM

FiTel S-175 V2000 S175 Fusion Splicer Fiber Cleaver

Agilent HP Sunrise CALAN Star 2010 SLMS CATV Analyzer

GN Nettest CMA4000 OTDR CMA4415 SM Fiber CMA 4000 4415

Fluke 123 ScopeMeter 123/003 20MHz Scope Meter 123S

TTC JDSU Acterna 2000 TestPad T-BERD 2209 TBERD DS3 PRI

Fluke TiR 9Hz Infrared Thermal Imager IR Ti

IDEAL LANTEK 6 MM Fiber Cat5e Cat6 Certfier LANTEK6

Sumitomo Type-61 Ribbon Fiber Fusion Splicer w/ Cleaver

IDEAL LANTEK 6A MM Fiber Cat5e Cat6 Certfier LANTEK6 6

IDEAL LANTEK 6A Cat5e Cat6 Cable Tester Certf LANTEK6 6

Agilent Wirescope 350 & 155 Cat5e Cat6 Cable Certifier

Fluke DSP-4300 & Microtest Pentascanner Certify Cat6

Anritsu Site Master S331D Antenna SiteMaster Opt3 Color

Fluke 724 Temperature Calibrator TL75 AC72 Fluke724

Siecor M7 Fusion Splicer & SM OTDR Plus Multitester

Siecor Corning SM OTDR Plus Multitester 383-SRSD54 PM

JDSU Acterna CLI-1750 CATV Leakage Meter Kit LST-1700

FiTel S-174H Fusion Splicer HP E6000B SM OTDR E6003A

Wavetek JDSU Acterna SDA-5000 & 3 CLI-1450 CATV Meters

Wavetek JDSU Acterna SDA-5000 & CLI-1750 CATV Meters

Sumitomo Type-65 Ribbon Fusion Splicer Fiber Cleaver

Fujikura FSM-20RS12 Fiber Ribbon Fusion Splicer Cleaver

Siecor Corning X75 8000 Fiber Fusion Splicer w/ Cleaver

TTC JDSU Acterna 2000 TestPad T-BERD 2209 TBERD DS3 PRI

Wavetek JDSU Acterna SDA-5000 & 3 CLI-1750 CATV Meters

JDSU Acterna DSAM-3600B CATV Meter & SDA-5000 Kit DSAM

Siecor Corning RXS M7 Fiber Fusion Splicer M90

Siecor CFS 2 Compact Fusion Splicer & TD-1000A SM OTDR

Fluke Networks EtherScope Series I Network Assistant

Fujikura FSM-15S Fiber Fusion Splicer FSM 15S Cleaver

Acterna JDSU TTC FST-2000 FST-2802 FST-2310 T-BERD 2310

TTC JDSU Acterna 2000 TestPad T-BERD 2310 TBERD DS3 PRI

TTC JDSU Acterna TestPad 2000 T-BERD 2310 2357 DSL

Agilent HP MM Fiber SmartProbe WireScope Pro N2647MM

TTC 2230 Communication Analyzer Module For TestPad 2000

Wavetek JDSU Acterna SDA-5000 & CLI-1450 CATV Meters

Fujikura FSM-20RSII12 Fusion Splicer TekRanger SM OTDR

Fujikura FSM-20RSII12 Fusion Splicer TD-1000A SM OTDR

JDSU Acterna DSAM-2600B CATV Meter & SDA-5000 Kit DSAM

Siecor X75 Fusion Splicer TekRanger TFS3031 SM OTDR

EXFO Multifunction Fiber Optic Talk Set VCS-20A VCS20A

Ericsson RSU-12 Ribbon Fusion Splicer Cleaver RSU12 RSU

Wavetek JDSU Acterna SDA-5000 CLI-1750 CLI-1450 CATV

Fujikura FSM-20RSII12 Fusion Splicer & PK7500 SM OTDR

USFiberOptic USF-21 Fiber Cleaver & USF-08 Tool Kit New

Wavetek JDSU Acterna 50660 LTS SM Fiber 4 MTS-5000 OTDR

Noyes VFI 1 Trouble Lite Visible Fault Identifier

Fluke DSP-FTA420 MM Fiber Modules DSP 4000 4300 FTA420

Riser Bond 1205TX-OSP Dual Metallic TDR 1205T-OSP 1205

EXFO FTB-1402 FTB-1400 4 FTB-100 FTB-200 FTB-300 FTB400

Fluke Networks DTX-NSM Network Service Module DTX NSM

EXFO FTB-9100 1X12 SM Fiber Switch Module For FTB OTDR

EXFO FTB-3920 MM Module FTB-100 FTB-200 FTB-300 FTB-400

Wavetek Ideal LT8155 LAN Cable Certifier Cat5 Cat5e

JDSU Acterna SmartClass ADSL Tester DSL ADSL2

Fluke NetTool 10/100 Network Connectivity Tester Inline

Fluke Networks 620 LAN Cable Meter Cat5 Coaxial Tester

EXFO FTB-PSB Stand Alone MM Fiber Pulse Suppressor Box

Wavetek LANTEK PRO XL 850nm Fiber Cat5 Cable Certifier

Fluke Networks DSP-100 Cat5 LAN Cable Tester DSP100 DSP

Fluke Microtest PentaScanner Plus w Super Injector Cat5

Fluke Microtest OMNIFIBER MM Fiber Modules OMNISCANNER

GNNettest LaserPrecision FF-1200A SM Fiber OTDR FF-1200

Fluke Networks 682 LANMeter Cat5 Cat5e Network Analyzer