IC693CPU313
IC693CPU313
IC693CPU313
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(chǔ)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(duì)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(hào)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(chǔ)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(hào)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(hào)變換成數(shù)字信號(hào)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(hào)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。
NATIONAL INSTRUMENTS DAQ System PCI-DIO-96 182920D-01
National Instruments NI PXI-5600 Card
National Instruments TB-2705 Screw Terminal Block
National Instruments NI GPIB SCSI-A Interface
National Instruments NI PCI-6011E - Save $1350
National Instruments NI FieldPoint FP-RLY-422 SPDT 4Ch
NATIONAL INSTRUMENTS 16-PORT SERIAL BREAKOUT BOX RS-232
National Instruments PCI-6013 Basic 200 kS/s 16 Bit
National Instruments NI PCI-1407 Card
National Instruments PCI-232/8 Serial Port w/ 68 PinCon
National Instruments NI PCI-6601 Card
National Instruments NI PCI-1200 Card TESTED
NATIONAL INSTRUMENTS PCI-8430 RS-232 INTERFACE 4-PORT
National Instruments: 183480E-01 PCI-DIO-32H Board
NEW NATIONAL INSTRUMENTS THERMOCOUPLE-J CONNECTOR PANEL
NATIONAL INSTRUMENTS PCI-6071E DATA ACQUISITION TESTED
NATIONAL INSTRUMENTS 182885E-01 PLUG/PLAY CARD
NATIONAL INSTRUMENTS CFP-TC-120 THERMOCOUPLE MODULE
National Instruments NI PCI-6014 Card tested
NATIONAL INSTRUMENTS SCC-CI20 CURRENT INPUT 2-CHANNEL
National Instruments CB-2162 Proto VHDCI - FREE WW SHIP
DB37 Male IDC Connector for NI National Instruments
National Instruments SH100100 Shielded Cable 182853-02
National Instruments 9933 37pin D-Sub connector kit NIB
NATIONAL INSTRUMENTS PCI 232/485 RS-232 CARD 8-CHANNEL
National Instruments NI FieldPoint FP-RTD-122 8Ch RTD
NEW National Instruments PCMCIA 485/2 2-Port Serial Int
NATIONAL INSTRUMENTS 184384C-01 MULTIFUNCTION I/O BOARD
DB37 Fem IDC Ribbon Connector for National Instruments
National Instruments AT-GPIB/TNT 181830F-01 Card
NI NATIONAL INSTRUMENTS PCI-6071E 184411C-01
LOT 2 NATIONAL INSTRUMENTS DAQ BOARD PCI-6516 PCI-232
NI National Instruments PCI-MIO-16EX-50 183454E-01 ++
National Instruments NI PCI-CAN #183887B-02 Dual Port
National Instruments NI PXI-6528 Card TESTED
National Instruments PCI 6220
National Instruments PCI 6220
National Instruments PCI 6220
National Instruments PCI 6220
National Instruments PCI 6220
National Instruments PCI 6220
NI National Instruments AT-MIO-16E DAQ Card ++
NATIONAL INSTRUMENTS New SCB-100 + SH100-100-F Cable
NI SCB-100 Part No.182788B-01 National Instruments
National Instruments ISA PC-DIO-96/PNP Card
NATIONAL INSTRUMENTS NI PCI-GPIB IEEE 488.2 18361TESTED
NI National Instruments DAQ SC-250x Series User Manual
National Instruments cFP-RTD-122 8-Ch RTD Input
NI National Instruments PCI DIO96 CARD - Save $290
National Instruments CFP-RLY-421 RELAY SPST Module 8-CH
National Instruments PCI 6220
National Instruments PCI 232/485 2-CH DAQ Card 184686D
National Instruments NI FP-AI-102 8Ch High Volt Analog
NATIONAL INSTRUMENTS PCI-8252 IEEE-1394 FIREWIRE 3-PORT
NATIONAL INSTRUMENTS GPIB to USB Adapter
National Instruments PXI-8422 RS-232 Serial Interface
National Instruments PCI 6220
NATIONAL INSTRUMENTS NI-DAQ SOFTWARE WINDOWS 95/NT/3.1
NATIONAL INSTRUMENTS SCXI-2000 MAINFRAME
National Instrument LAB-PC 180835-01 Rev. D
National Instruments NI PXI-2544 Card TESTED
NATIONAL INSTRUMENTS NI GPIB-VXI/C 184511B-01
National Instruments NI PCI-232/485 2-Channel
National Instruments NI AT-MIO-16E-10 FREE WW SHIPPING
50 Pin w/ VERTICAL Ejector for National Instruments
National Instruments NI BNC-2080 Rev B2 002287
NI National Instruments AT-MIO-64E-3 12-Bit 64AnalogDAQ
National Instruments 181-7617-1C SCSI Card - ZX-Box Int
NATIONAL INSTRUMENTS AT-MIO-16 180705 180705-11 PCB
NATIONAL INSTRUMENTS CFP-A0-200 CURRENT OUTPUT MODULE
National Instruments 9932 10 Position Connector Block
National Instruments SC-2050 #100636
National Instruments AT-GPIB/TNT Plug & Play IEEE 488.2
NI National Instruments PCI 232/485 8Ch Interface Card
National Instruments: ER-8 with CB-50LP I/O Connector
NATIONAL INSTRUMENTS SCXI-1100 MULTIPLEXER AMPLIFIER NI
National Instruments 181060-01 AT-GPIB IEEE-488.2 CARD
NI National Instruments PCI-CAN Card
National Instruments FLKM 50 - 50 Pin Breakout DIN Mont
LOT NATIONAL INSTRUMENTS COMBO SOFTWARE DAQMX PXI SCXI
National Instruments F Bus Card Fieldbus NI# 1837690
50 Pin w/ Right Angle Ejector for National Instruments
SCB100 and NATIONAL Instruments PCI DIO96 + DIO CARD
National Instruments SCXI-1000 w/ SCXI-1120 & 1320 ++
NATIONAL INSTRUMENTS SCXI-1000 MAINFRAME W/ SCXI-1322
National Instruments Terminal Base FP TB-10 Dual Ch
NATIONAL INSTRUMENTS NI PCI-GPIB IEEE 488.2 183617k-01
National Instruments GPIB-SCSI: Controller IEEE-488
NI NATIONAL INSTRUMENTS SCXI-1124
National Instruments At-gpib/tnt+ Card
National Instruments Din Rail Mounting Kit # 777972-01
NATIONAL INSTRUMENTS NI GPIB-USB-B IEEE 488.2 TESTED
NATIONAL INSTRUMENTS PCI-MIO-16E-4 DAQ CARD
National Instruments NI PXI-1006 Chassis + DAQ Cards
National Instruments Cable Assy IMAG-A2504-1 DB25 BNC
National Instruments SCXI-1300 185161A
NATIONAL INSTRUMENTS NI PCI-GPIB HIGHT SPEED TESTED
NATIONAL INSTRUMENTS NI PXI-8335 MXI-3 PXI TO VXI BRIDG
National Instruments AT-MIO-16DE-10 w/ 60 day warranty
National Instruments SCXI-1180 Feedthrough Panel
National Instruments SCXI-1351 One-Slot Cable Extender
NATIONAL INSTRUMENTS 76507-02 TYPE X2
National Instrument 5102 2 channel 20 MS/s 8-bit
National Instruments SCXI-1314
NATIONAL INSTRUMENTS GPIB-SCSI-A CONTROL
National Instruments PXI-1045 Chassis 189105E-01
National Instruments NI PXI-6508 Digital I/O
National Instruments PXI-1010 8-Slot PXI/4 SCXI Chassis
National Instruments SCXI-1166 Relay Module
National Instruments SCXI-1366 Terminal Block
National Instruments NI PXI-4071 71/2 Digit FlexDMM
National Instruments PXI-2530 128-Channel Reed Relay
National Instruments GPIB-120A Bus Expander Isolator
National Instruments SCXI-1000 SCXI-1121 SCXI-1160 Mint
National Instruments NI SCXI-1193 Multiplexer/Mat?rix
National Instruments VME-MXI-2 Board
National instruments FP-AO-200 & FP-TB-1
National instruments FP-3000 network interface
National Ins. 181065-02 Gpib-pcii National Instruments
National Ins. GPIB-PCII Gpib-pcii National Instruments
National Ins. 182887E-01 National Instruments At-gpib/t
National Instruments ER-16 Module Assembly 183064B-02
National instruments 181065-01 Rev.E
National Instruments SH100100 Shielded Cable, New
National Instruments SCXI-1100
NI National Instruments VME-MXI-2 Mainframe Extender
National Instruments PCI-232/485 , 4CH board
National Instruments 763061-02
National Instruments NI PXI-6713 Analog Output
National Instruments GPIB-PCII/IIA National Instruments
NATIONAL INSTRUMENTS ASSY, 8-PORT GPIB STRIP
National Instruments CB-68LPR
NATIONAL INSTRUMENTS GPIB-120A BUS EXPANDER / ISOLATOR
National Instruments 184608B-01
NATIONAL INSTRUMENTS VXI-MXI-2 183345D-03 EXTENDER CARD
National Instruments 182787c-01 rev1 Ieee-488.2 Isa Boa
National Instruments NI PCI-GPIB / LP card Interface
NATIONAL INSTRUMENTS GPIB-PCII / IIA ASSY 181065-01
National Instruments EXM-GPIB Interface Card
National Instruments GPIB-VXI-C VXI bus C-size module,
National Instruments VME-MXI-2 MXI-2 bus interface for
National Instruments 182801A-002 VXI-MXI Cable, 2 Meter
National Instruments 181520J-0110 GPIB-VXI/C Module
NATIONAL INSTRUMENTS 9628 ERNI 024069 CABLE 2 ENDS
National Instruments SCXI-1125 8-Channel Amplifier Card
National Instruments AT-GPIB/TNT
NATIONAL INSTRUMENTS NI GPIB IEEE 488 Adapter 4.1m
National Instruments 779301-512 MB Upgrade PXI-8196/95
NATIONAL INSTRUMENTS Model SCXI 1100 / 32 CHANNEL
National Instruments NI PXI-GPIB
National Instruments (NI) VME-MXI-2 VMEbus Extender VME
NATIONAL INSTRUMENTS VXI-MXI-2 183345E-03 EXTENDER CARD
National Instruments GPIB-796P Card
National Instruments (NI) 777567-01 Power Supply
(5) National Instruments GPIB 1 M Cables 763061-005
National Instruments 763507B-02 X2 GPIB 2.0 Meter
National Instruments VXI-MXI-2
National Ins. 181067-01 Gpib-pcii National Instruments
National Ins. 182885E-01 National Instruments At-gpib/t
National Ins. 181830F-01 National Instruments At-gpib/t
National Ins. 181832E-01 National Instruments At-gpib/t
National Ins. 181830E-01 National Instruments At-gpib/t
National Instruments/Tek?tronix GPIB adapter 180212-01 A
National Instruments EXNAT-GPIB
National Instruments GPIB-1014 VMEbus Interface, New
National Instruments AT-GPIB National Instruments At-gp
National Instruments AT-GPIB/TNT National Instruments A
National Instruments SB-GPIB/TNT 182390C-01
HV# National instruments VXI-MIO-64XE-10
HV# National instruments VXI-MXI-2
National Instruments GPIB-USB-A iVIEW TLA Scope Cable
National Instruments EXNAT-GPIB-TNT Ieee-488.2 Isa Boar
NATIONAL INSTRUMENTS CARTS Model AT-GPIB / TNT
