IC693CPU311

IC693CPU311

IC693CPU311

CPU主要由运算器、控制器、寄存器及实现它们之间联系的数据、控制及状态总线构成,CPU单元还包括外围芯片、总线接口及有关电路。内存主要用于存储程序及数据,是PLC不可缺少的组成单元。

在使用者看来,不必要详细分析CPU的内部电路,但对各部分的工作机制还是应有足够的理解。CPU的控制器控制CPU工作,由它读取指令、解释指令及执行令。但工作节奏由震荡信号控制。运算器用于进行数字或逻辑运算,在控制器指挥下工作。寄存器参与运算,并存储运算的中间结果,它也是在控制器指挥下工作。


CPU速度和内存容量是PLC的重要参数,它们决定着PLC的工作速度,IO数量及软件容量等,因此限制着控制规模。

I/O模块

PLC与电气回路的接口,是通过输入输出部分(I/O)完成的。I/O模块集成了PLC的I/O电路,其输入暂存器反映输入信号状态,输出点反映输出锁存器状态。输入模块将电信号变换成数字信号进入PLC系统,输出模块相反。I/O分为开关量输入(DI),开关量输出(DO),模拟量输入(AI),模拟量输出(AO)等模块。

常用的I/O分类如下:

开关量:按电压水平分,有220VAC、110VAC、24VDC,按隔离方式分,有继电器隔离和晶体管隔离。

模拟量:按信号类型分,有电流型(4-20mA,0-20mA)、电压型(0-10V,0-5V,-10-10V)等,按精度分,有12bit,14bit,16bit等。

除了上述通用IO外,还有特殊IO模块,如热电阻、热电偶、脉冲等模块。


按I/O点数确定模块规格及数量,I/O模块可多可少,但其最大数受CPU所能管理的基本配置的能力,即受最大的底板或机架槽数限制。

电源模块

PLC电源用于为PLC各模块的集成电路提供工作电源。同时,有的还为输入电路提供24V的工作电源。电源输入类型有:交流电源(220VAC或110VAC),直流电源(常用的为24VDC)。

底板或机架

大多数模块式PLC使用底板或机架,其作用是:电气上,实现各模块间的联系,使CPU能访问底板上的所有模块,机械上,实现各模块间的连接,使各模块构成一个整体。

NATIONAL INSTRUMENTS NI PCI-MIO-16E-4 DAQ CARD

National Instruments PC-TIO-10

National Instruments High-Current 96 Ch PCI-6509

NATIONAL INSTRUMENTS NI TBX-1325 TERMINAL BLOCK

National Instruments NI PXI-6533 HS Digital/Pattern IO

National Instruments MXIbus Bulkhead Cable MB-4 66-PIN

NATIONAL INSTRUMENTS NI PXI-7831R I/O MODULE

National Instruments NI PXI-6713 8-Channel Analog Out

National Instruments NI PXI-1002 w PXI-8174 Controller

NATIONAL INSTRUMENTS NI ER-8 

NATIONAL INSTRUMENTS VXI-AO-48XDC

National Instruments AT-MIO-16X 181610-01 DAQ I/O Board

National Instruments NI PXI-5102, 15Mhz 2-Channel Scope

National Instruments TB 2715; PXI-653x/660x Terminal

NATIONAL INSTRUMENTS NI PXI-8176 EMBEDDED CONTROLLER

NATIONAL INSTRUMENTS SCXI-1357 BACKPLANE KIT 776575-582

NATIONAL INSTRUMENTS NI PXI-8211 ETHERNET INTERFACE

NATIONAL INSTRUMENTS IMAQ DIGITAL TEST FIXTURE CARD

National Instruments SH100100 2-Meter E-Series Cable

National Instruments SCXI-1102B 

National Instruments NI PXI-4060 5-1/2 Digit Multimeter

NATIONAL INSTRUMENTS NI PXI SCSI 100

National Instruments.SCX?I-1303. Terminal Block.

National Instruments RF Downconverter PXI-5600

National Instruments. ISDN TESTER POD

National Instruments AT-MIO-16 Data Acquisition Card NI

National Instruments NI PCI-GPIB IEEE 488.2 Card.Tested

NATIONAL INSTRUMENTS (NI) VME-MXI-2 VMEbus EXTENDER 

National Instruments SCXI-1000 4-Slot SCXI Chassis $829

NATIONAL INSTRUMENTS AT-MIO-16DE-10 MULTIFUNCTION DAQ

National Instruments GPIB Instrument Simulator & Manual

National Instruments NI SCXI-1301 TERMINAL BLOCK

NATIONAL INSTRUMENTS SCXI-1000 MAINFRAME W/ SCXI-1127

National Instruments: NI card MODEL # PCI-DIO-96

National Instruments. SCXI-1121

NATIONAL INSTRUMENTS SCXI-1162HV 32 CHANNEL DIGITAL I/P

NATIONAL INSTRUMENTS NI AT-MIO/AI-16XE-?10 MULTIFUNCTION

New National Instruments CB-50LP Unshielded I/O Connect

National Instruments NI PXI-1000B Embedded Computer

National Instruments PCI-8431/2 RS-485 2-Port Serial

NATIONAL INSTRUMENTS NI PXI-8335 MXI-3 PXI TO VXI BRIDG

NATIONAL INSTRUMENTS SCXI-1163R 32 CHANNEL S/S RELAY

National Instruments MXI Cable 1 Meter

National Instruments Cable SH50-50

NATIONAL INSTRUMENTS NI SCXI-1161 8-CHANNEL POWER RELAY

NATIONAL INSTRUMENTS VXIpc-745 PENTIUM VXI CONTROLLER

NATIONAL INSTRUMENTS SCXI-1326 TERMINAL BL0CK

National Instruments NI SH100-100-F FLEX 185095-02 2 m

NATIONAL INSTRUMENTS SCXI-1161 8 CHANNEL POWER RELAY

NATIONAL INSTRUMENTS NI AT-MIO-16E-10 CARD

National Instruments SCXI 1122 16 CH ISO Transducer MUX

National Instruments. SCXI-1332

National Instruments 186736C-01 PCMCIA-GPIB Card

National Instruments AT-MIO-16E-1 1830188B-01 DAQ Card

NATIONAL INSTRUMENTS USB-RS485 SERIAL DAQ DEVICE 4-PORT

National Instruments PCI-MIO-16E-4 PCI-6040E

National Instruments Terminal Box - TXB-68

NATIONAL INSTRUMENTS SCXI-1125 8-CHANNEL ISOLATION AMP

NATIONAL INSTRUMENTS SCXI-1162HV 32-CHANNEL INPUT

National Instruments Data Acquisition Card CF-6004 DAQ

National Instruments GPIB-PCII/IIA ISA 181065-02E Card 

NATIONAL INSTRUMENTS DAQMX SOFTWARE NEW NR

National Instruments MXI Cable 2 Meter

National Instruments SCXI 1140 8 CH Sample Hold AMP

National Instruments GPIB-1014P

NI National Instruments TB-2606 Matrix Terminal Block

National Instruments 184713B-01 NI PCMCIA-GPIB Card C

National Instruments (NI) Breadboard Module SCXI-1181

National Instruments 182361D-01 NI PCMCIA-GPIB Card

NATIONAL INSTRUMENTS 6035E DAQ MULTIFUNCTION I/O PCI

National Instruments NI GPIB-120B Isolator and Expander

With Power Supply, Cord & User Manual

National Instruments PXI8422/4 RS232 Serial Interface

NATIONAL INSTRUMENTS PCI-6255 MULTIFUNCTION DAQ M-SERIE

National Instruments 182885E-01 Plug/Play Card NOS

National Instruments 182826C-01 NI PCMCIA-GPIB+ Card

NATIONAL INSTRUMENTS SC-2345 SIGNAL CONDITIONING BLOCK

National Instruments Lab PC Assy 180835-01

NATIONAL INSTRUMENTS NI GPIB-120A BUS EXPANDER/ISOLAT?OR

National Instrument ER-16 SPDT Relay Accessory ER16

NATIONAL INSTRUMENTS CFP-2000 ETHERNET CONTROLLER DAQ

National Instruments GPIB-SCSI-A Controller 181340D-31

NATIONAL INSTRUMENTS PCI-6033E DAQ I/O BOARD / SOFTWARE

National Instruments PCI-MIO-16E-1 PCI-6070E TESTED

NATIONAL INSTRUMENTS PCI-DIO-96 DIGITAL I/O DAQ BOARD

NATIONAL INSTRUMENTS NI SCB-68 I/O CONNECTOR BLOCK DAQ

National Instruments Analog Multifunction DAQ PCI-6071E

National Instruments GPIB 422CV 256K 180465-02 Rev B1

NATIONAL INSTRUMENTS PCI-6033E MULTIFUNCTION I/O BOARD

National Instruments NI PCI-6033E 16 Bit - SAVE $2000

National Instruments GPIB-110 Bus Extender 180294-01

National Instruments GPIB-SCSI-A Controller/Inte?rface

National Instruments GPIB-SCSI-A Controller/Inte?rface

National Instruments NI PCI-6110 PCI-6111 Tested

National Instruments Daqcard PCI-6024E NI Daq w/ SW

NATIONAL INSTRUMENTS PC-4350 DAQ BOARD/ LOGGER SOFTWARE

National Instruments: 180950-01, SC-2070 Board, Rev. D 

National Instruments BNC-2110 Shielded Connector Block

National Instruments NI PCI-6251 M-Series Hi-Speed DAQ

NATIONAL INSTRUMENTS NI PCI-GPIB IEEE488.2 DAQ CARD

NATIONAL INSTRUMENTS PCI-6014 MULTIFUNCTION INPUT DAQ

NATIONAL INSTRUMENTS PCI-6503 DAQ I/O CARD PCI-DIO-24

NATIONAL INSTRUMENTS DAQPAD-6020E 6020E NI

NATIONAL INSTRUMENTS PCI-DIO-96 DIGITAL I/O CARD DAQ NI

NATIONAL INSTRUMENTS NI PXI 6052E MULTIFUNCTION DAQ 

national instruments complete system fieldpoint 

National Instruments NI SC-2070 

NATIONAL INSTRUMENTS PCI-6025E MULTIFUNCTION DAQ CARD

National Instruments PCI-6514 64-Channel Digital I/O

National Instruments GPIB-SCSI-A Controller 181340D-01

National Instruments PCI-6023E FREE WORLD WIDE SHIPPING

National Instruments PCI-6071E TESTED

National Instruments NI PCI-6111E Tested

National Instruments PXI-1002 PXI Chassis with Plug-Ins

National Instruments NI PCI-6110E Card

LOT NATIONAL INSTRUMENTS DAQ DAQMX SOFTWARE KITS NEW

NATIONAL INSTRUMENTS PCI-232/485 ISOLATED 4-CHANNEL DAQ

NATIONAL INSTRUMENTS PCI-6024E DAQ CARD TESTED

National Instruments PCI-MIO-16XE-10 NI PCI-6030E

NATIONAL INSTRUMENTS PCI-6516 DIGITAL SOURCE OUTPUT DAQ

NATIONAL INSTRUMENTS PCI-8430 RS232 8-PORT RS-232 DAQ

NATIONAL INSTRUMENTS NI 2 meter X2 GPIB Cable

BNC- 68 Pin Male National Instruments doesn't have this

National Instruments NI PCI-6221 Card TESTED

NATIONAL INSTRUMENTS PCI-8432 ISOLATED 4-PORT DAQ RS232

National Instruments NB-GPIB Mac NuBus Card 180510-01

2 pcs National Instruments PC-OPDIO-16 Interface Card

NEW National Instruments PCI-6033E Board DAQ / Software

National Instruments NI PCI-6711 TESTED

National Instruments cFP-BP-8 LabVIEW RT Backplane NI

National Instruments PCI-MIO-16XE-10 I/O Board

National Instruments cFP-2020 LabView RT controller

National Instruments (NI) AT-GPIB/TNT 

NI National Instruments cFP-AI-102 8 Channel 12 Bit 

National Instruments GPIB-SPRC-S.U.S 120VAC

National Instruments NI PCI-6034E

National Instruments NI PCI-6052E Tested

National Instruments NB-DIO-24 Digital I/O Board - Maci

LOW COST 68 Pin Rt Angle Male for National Instruments 

National Instruments NI PCI-6035E SAVE $ FREE WW SHIP

National Instruments NI PCI-6034E Card

National Instruments 68 Pin to 68 Pin Shielded Cable

NATIONAL INSTRUMENTS PCI-GPIB IEEE 488.2 183617K-01

National Instruments Shielded I/O Box SCB-100 - USED

National Instruments Dual Channel 4-20mA Analog Output 

LOT NATIONAL INSTRUMENTS DAQ DAQMX SOFTWARE KITS NEW

National Instruments NI PCI-6040E PCI-MIO-16E-4 Card

National Instruments AT-MIO-16 I/O w/ cable 50 pin

LOT NATIONAL INSTRUMENTS DAQ DAQMX SOFTWARE COMBO KIT

National Instruments NI PCI-6032E

NATIONAL INSTRUMENTS NI SCB-100 I/O CONNECTOR BLOCK

Save $1850 National Instruments PCI-6032E FREE WW SHIP

National Instruments NI PCI-6602 Card

National Instruments PCI-6251 Data Acquisition Card

National Instruments PCI-6033E MULTIFUNCTION I/O BOARD

National Instruments PCI-6031E Data Acquisition Card

NI National Instruments BNC-2110

National Instruments Digital I/O PC Card DAQCARD-DIO-24

National Instruments PCI-6025E Digital Card

National Instruments NI PCI-6220 Card

National Instruments NI PCI-6534 Tested

National Instruments cFP-AI-118 LabView Analog Input

SAVE $2200 National Instruments PCI-6033E FREE WW SHIP

National Instruments NI PCI-6025E Card

NATIONAL INSTRUMENTS NI PCI-GPIB IEEE 488.2 TESTED

National Instruments TBX-68T Thermocouple Terminal 

National Instruments NI PCI-6509 Card

National Instruments NI PCI-DIO-96 Digital I/O DIO 96

New National Instruments NI PCI-6254 779071-01 Analog

NATIONAL INSTRUMENTS SCB-100 I/O BLOCK SH100 CABLE PSU

National Instruments FieldPoint I/O Modules & Interface
FP-1001 AO-200 AI-110 DO-401 DI-330 TB-2

National Instruments NI PCI-MIO-16XE-50 TESTED

National Instruments NI PCI-4452 PCI-4451

NATIONAL INSTRUMENTS DAQ BLOCKS CB-50LP CABLE CA-1000

National Instruments 68-pin Connector Kit 776832-01

NATIONAL INSTRUMENTS TC-2190 BREAKOUT BOX THERMOCOUPLES

NATIONAL INSTRUMENTS PCI-6251 DATA ACQUISITION 

National Instruments PCI-6602 TESTED

NI National Instruments PCI-6503 Digital I/O - SAVE $80

National Instruments NI PCI-5102 Card

National Instruments GPIB Cable, Type X13, 2-Meter *NEW

68 Pin Kit for National Instruments & 3 Scope Probes !

NATIONAL INSTRUMENTS CFP-DI-301 DIGITAL DISCRETE INPUT

FREE WORLD WIDE SHIPING National Instruments NI SCB-100

National Instruments NI-PCI-6033E Card

National Instruments Shielded I/O Box SCB-100 - NEW

National Instruments NI PCI-8212 TESTED

National Instruments NI PCI-6032E Card

68 Pin Term for National Instruments w Flat Ribbon Cabl

NATIONAL INSTRUMENTS 4-PORT RS-232 PCI SERIAL 185729C

National Instruments PCI-DIO-32HS 183480B-01

LOT NATIONAL INSTRUMENTS DAQ RIBBON CABLE R6868 NB1 DIO

National Instruments NI PCI-6711 Card