IC693CMM321

IC693CMM321

IC693CMM321

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 PCI-6033E I/O BOARD DAQ 

National Instruments PCI-MIO-16E-4 (6040E) NI DAQ Card

National Instruments SCXI 1000 4-slot Chassis working 

National Instruments ELVIS USB-6251 Bundle (Academic)

NATIONAL INSTRUMENTS PCI-MIO-16XE-10 DAQ BOARD & CABLE

National Instruments, FP-PWM 520 Module, 8Ch,PWM Output

National Instrument cFP-TC-120 and cFP-CB-3

National Instruments PCI-GPIB IEEE 488.2 Interface Card

National Instruments VMI-MXI Module 181045-01 Rev E4

National Instruments NI PCI-6013 16-bit analog DAQ

National Instruments GPIB-1014 VME Controller Card 

National Instruments 181060-01 AT-GPIB Card IEEE 488.2

National Instruments PCI-5102 Digitizer Scope DAQ Card

National Instruments AT-GPIB/TNT Plug & Play IEEE 488.2

National Instruments Data Acquisition PCL848A GPIB CARD

NATIONAL INSTRUMENT NI PXI-6533 32-BIT DIGITAL I/O INFC

National Instruments 182801A-002 MXI-1 2Meter Cable 

National Instruments NI 9481 - 4 Channel Relay 

NI National Instrument SCXI Adapter to DAQ 1349 

National Instruments PCI-6025E 12-bit multifunction DAQ

NATIONAL INSTRUMENTS GPIB-100 BUS EXTENDER

National Instruments NI PCI-6024E DAQ BOARD 

NATIONAL INSTRUMENTS AT-GPIB/TNT PLUG n PLAY IEEE 488.2

Three 3 National Instruments NI SCXI-1328 term block

National Instruments SC-2075; Breadboarding System

THREE (3) National Instruments SCXI-1125 8-Channel Isol

National Instruments NI PXI-6508 96-Channel 

National Instruments NI PCI-6071E DAQ BOARD 

National Instruments NI VXI-MXI-2 Mainframe Extender

National Instruments VXI-MXI with INTX

National Instruments SC-2071 

National Instruments Multifunction DAQ I/O PCI-6032E

National Instruments Timing & Digital I/O Card PCI-6601

National Instrument PXI-5650 RF Signal Generator Module

National Instruments MXI-4 PXI Controller PCI-8336

National Instruments VMI-MXI Module 181045-01 Rev G5 

National Instruments NI PCI-6023E Multifunction DAQ

National Instruments NI VXI-MXI Module 181045-02 Rev G6

National Instruments NI PCI-MXI-2 Interface Card

NATIONAL INSTRUMENT NI AT-MIO-16 REV. E.8 WITH CABLE

National Instruments PCI-232/485 8-Channel RS-232 Card

National Instruments SYSFAIL VMI-MXI-2 Module 183345G

National Instrument cFP-2120 Network Controller LabVIEW

National Instruments PCI-GPIB Card IEEE 488.2, 183617F

National Instruments NI BNC-2096 16-ch TEDS Interface

NATIONAL INSTRUMENTS DAQCard-6024E for PCMCIA

National Instruments PXI-6653 Timing & Synch. Control

National Instruments GPIB-USB-B IEEE 488.2

NATIONAL INSTRUMENT NI SCXI-1127 RELAY MULTIPLEXER MATR

National Instruments SCB-68 I/O Connector Block

National Instruments SCB-68 I/O Connector Block

National Instrument cFP-DO-401 and cFP-CB-1 Module NI

A75475 National Instruments SCXI-1000 w/ Modules

National Instruments PCMCIA DAQCard AI-16E-4 NI DAQ

National Instruments GPIB-II GPIB /ISA interface card

NATIONAL INSTRUMENTS GPIB Cable "NEW"

National Instruments NI PCI-MIO-16E-4 (PCI-6040E)

A74939 National Instruments PC-DIO-96/PnP Board

National Instruments NI PXI-8156 CPU

National Instruments. PXI-5112. Digitizer

National Instruments NI PCI GPIB IEEE 488.2

National Instruments NI PCI 6515 ,digital I/O interface

NATIONAL INSTRUMENTS PCI-7030/6030E REAL TIME MF DAQ

National Instruments PCI-1411 IMAQ Frame Grabber Card

National Instruments AT-MIO-16E-10 Short Form Factor

National Instruments DAQCard-700 16-digital I/O Card

National Instruments SC-2062 8 Channel Relay Board

National Instruments PXI-6052E 16 BIT

National Instruments NI PXI-6229, M-Series DAQ

National Instruments DAQ, PCI-MIO-16E-4, PCI-6040E, NEW

National Instruments DAQ Card, PC-DIO-24, 777368-01,NEW

National Instruments FieldPoint *XTRAS*

Vietnam IMPERF Block 2 National musical instruments 

National Instruments AT-GPIB/TNT IEEE-488.2 

National Instrument cFP-DIO-550 and cFP-CB-1 Module NI

National Instruments AT-GPIB/TNT 183663C-01 GPIB

National Instruments Adaptor GPIB 181638-01B

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

National Instruments NI PCI-GPIB+

National Instruments Rugged Carrying Case 

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

National Instruments 4-way GPIB Switch Box

National Instruments 186736C-01 PCMCIA-GPIB Card

National Instruments NI PCI-6503 DAQ Board 

NATIONAL INSTRUMENTS GPIB-SCSI-A

NATIONAL INSTRUMENTS VXI-MXI CARD

NATIONAL INSTRUMENTS DAQPAD-6070E FIREWIRE

NATIONAL INSTRUMENTS VXI-MXI CARD

DIETZGEN NATIONAL DRAWING INSTRUMENTS IN CASE 50

National Instruments LabVIEW Advanced Training

National Instruments SCXI-1102 C Thermocouple Amplifier

NI NATIONAL INSTRUMENTS DIGITAL I/O BOARD PCI-6527

NATIONAL INSTRUMENTS NI PCI-MIO-16E-1 DAQ

Chinese National musical instrument suona Bb Code

Chinese Old National Instrument Yang qin Dulcimer

NATIONAL INSTRUMENTS PCI-MIO-16XE-10 DAQ CARD

R75943 National Instruments 186557 Type PCMCIA GPIB 4M

National Instruments PCIe-8361 for Remote Interface

National Instruments NI PCI-6024E Multifunction DAQ

National Instruments PCI-1200 DAQ Card, excel condition

National Instruments PCI-1200 DAQ Card, excel condition

NATIONAL INSTRUMENTS PCI-MIO-16E-4 Card

National Instruments NI PCI-5102 Card

NATIONAL INSTRUMENTS NI PCI-6014 MULTIFUNCTION DAQ CARD

National Instruments TBX-68 I/O Connector Block; DIN

National Instruments PCI-6602, 8 32-Bit Up/Dn Counters

National Instruments PCI-MIO-16E-1 (6070E) NI DAQ Card

National Instruments PCI-GPIB Card, 778032-01, New!

NATIONAL INSTRUMENTS NI PXI-6224 32 ANALOG INPUTS DAQ

National Instruments PCI-MIO-16E-1 PCI-6070E AS-IS 

National Instruments PCI-6713 NI DAQ Card Analog Output

National Instruments SCB-68; Shielded Connector Block

National Instruments (NI) PXI-6071E multifunction I/O

National Instruments NI 763061-02 rev C GPIB Cable

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

NATIONAL INSTRUMENTS 182920J-01 PCI-DIO-96 Digital I/O 

National Instruments PCI-GPIB/+ 183617C-01

NATIONAL INSTRUMENTS NI BNC-2095 32 BNC MODULE

NATIONAL INSTRUMENTS NI PCI-6239 MF DAQ

WWII US Navy Binoculars National Instrument Houston TX

National Instruments PCI-6115 NI DAQ Card 64Mb 10MS/sec

NATIONAL INSTRUMENTS PCI-6033E I/O BOARD DAQ

NATIONAL INSTRUMENTS NI PXI-6225 MULTIFUNCTION DAQ

National Instruments PCI-DIO-32HS (PCI-6533) Pattern IO

NATIONAL INSTRUMENTS DAQCard-6024E for PCMCIA + CABLE

NATIONAL INSTRUMENTS PCI-MXI-2 INTERFACE CARD

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

National Instruments LabVIEW Basics Training - 2 CD set

National Instruments PCI-6534 High-Speed Pattern IO

Deep Memory- 32MB Memory per Data Path

National Instruments PXI-5600 RF Downconverter Perfect!

National Instruments PSHR68-68M 183569-01 NEW

National Instrument PCI MIO 16XE-50 DAQ 183454E-01

National Instruments NI PCI-GPIB IEEE 488.2 Card 188513

National Instruments NI PXI-6722 8-Channel Analog Out

NATIONAL INSTRUMENTS NI PCI-6233 DIO SINKING BANK ISOLA

National Instruments USB-6525 Digital I/O

NI PC-DIO-96 ISA Card - National Instruments I/O

National Instruments PCI-6512 Isolated 64-Ch Outputs

National Instruments 182887E-01 ISA 488.2 GPIB/TNT Card

National Instruments PCI-485/8; 8-port RS-485 w/Cable

National Instruments PCI-6110E 4Ch,5MS/s,12-Bi?t Module

National Instruments NI PCI-CAN/2 Series 2, 2-Port

NATIONAL INSTRUMENTS PCI-6035E CARD

National Instruments PXI-7344; 4-Axis Motion Controller

National Instruments 763061-03 X2 GPIB Cable

National Instruments PC-DIO-24 I/O Board, 180710C-01

National Instruments PCI-1411 IMAQ Frame Grabber Card

National Instruments Lab-PC 180835-01 Computer Board

NATIONAL INSTRUMENTS NI PXI-8156B EMBEDDED CONTROLLER

National Instruments nuDrive 4-Axis Servo Amplifier 

NATIONAL INSTRUMENTS NI PCI-7030/6533 RT MF DAQ

National Instruments NI PXI-8156 PXI DAQ

NATIONAL INSTRUMENTS PCI-MIO-16XE-50 DAQ CARD

National Instruments PCI-6512 Iso 64-Ch Outputs

National Instruments FP-TB-1 Terminal Base

NATIONAL INSTRUMENTS NI TB-2725 w / BNC Cable

National Instruments PCI-6521 Industrial Relay & IO

National Instruments NI SH100-100-F Flex, 1-Meter Cable

National Instruments NI CardBus-8310 StarFabric PCMCIA