IC693MDL260

IC693MDL260

IC693MDL260

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。
RELIANCE ELECTRIC 0-49001-5 NSFP 0490015

RELIANCE ELECTRIC 0-49026-9 NSPP 0490269

RELIANCE ELECTRIC 0-51862-1 NSFP 0518621

RELIANCE ELECTRIC 0-51865-15 USPP 05186515

RELIANCE ELECTRIC T18R1311R-JB USPP T18R1311RJB

RELIANCE ELECTRIC 0-54339-11 USPP 05433911

RELIANCE ELECTRIC 54339-11 USPP 5433911

RELIANCE ELECTRIC 831654 NSPP 831654

RELIANCE ELECTRIC DM-10 USPP DM10

RELIANCE ELECTRIC 11C-428S USPP 11C428S

Reliance Electric Motor 10 HP 1200 RPM 284UD 460 Volt

RELIANCE ELECTRIC D4140-002 USPP D4140002

RELIANCE ELECTRIC IKA859977-XN USPP IKA859977XN

RELIANCE ELECTRIC 2KA867083-RQ USPP 2KA867083RQ

RELIANCE ELECTRIC 846723V USPP 846723V

RELIANCE ELECTRIC 0-57409-F NSPP 057409F

RELIANCE ELECTRIC 0-86466-77S USPP 08646677S

RELIANCE ELECTRIC 0-51865-9 USPP 0518659

RELIANCE ELECTRIC 0-51668-1 USPP 0516681

RELIANCE ELECTRIC 0-51445-A NSPP 051445A

RELIANCE ELECTRIC 0-54392-2 NSFP 0543922

RELIANCE ELECTRIC 0-49017-16A USPP 04901716A

Reliance Electric Company 0-48652 Calibrator 048652

RELIANCE ELECTRIC 419021-1C NSFP 4190211C

RELIANCE ELECTRIC 86475-10S NSPP 8647510S

RELIANCE ELECTRIC 86475-10R NSFP 8647510R

RELIANCE ELECTRIC 38C80 USPP 38C80

RELIANCE ELECTRIC 57412-E USPP 57412E

RELIANCE ELECTRIC 0-54381 NSFP 054381

RELIANCE ELECTRIC 0-51893-3 NSPP 0518933

RELIANCE ELECTRIC 5PY59JY27 USPP 5PY59JY27

Reliance Electric Analog Input 61C542A

RELIANCE 40HP ELECTRIC MOTOR, 1765 RPM, 230/460 VOLT

RELIANCE ELECTRIC 16 BIT REGISTER OUTPUT MODULE 45C381B

Reliance 40 HP Electric Motor 1765/3/460 Refurbished

RELIANCE ELECTRIC RESOLVE INPUT MODULE 57C411*NEW*

RELIANCE ELECTRIC CONTACTOR 417690-4R

RELIANCE ELECTRIC 803602 -SE-150 HP DCS POWER MODULE

RELIANCE ELECTRIC 846747-R USPP 846747R

RELIANCE ELECTRIC 796896-R USPP 796896R

RELIANCE ELECTRIC 27106-27R USPP 2710627R

RELIANCE ELECTRIC 27106-27S USPP 2710627S

RELIANCE ELECTRIC 27106-28V USPP 2710628V

RELIANCE ELECTRIC 27106-28Y USPP 2710628Y

RELIANCE ELECTRIC 2GU41002 NSFP 2GU41002

Reliance Electric 0-50075 050075 Board Card Control

Reliance Electric ESI 9172 30HP DC Drive ESI9172

RELIANCE ELECTRIC ELECTRO-CRAFT DM20 SERVO 9101-1302

RELIANCE ELECTRIC O-48664-2 O486642 VLTG TRANSDUCTOR

USED 75 HP RELIANCE ELECTRIC MOTOR

Reliance Electric Analog I/O 61C351A

RELIANCE ELECTRIC AUTOMATE 45C305 30E PROCESSOR 4K

RELIANCE ELECTRIC 86466-60W

RELIANCE ELECTRIC 78094-33R

Reliance Electric PC Board 0-55325-37

Reliance Electric 1326AS-B330H-21 Servo Motor

RELIANCE REEVES ADJUSTABLE SPEED 1hp ELECTRIC MOTOR

RELIANCE ELECTRIC 0-55325 CARD CIRCUIT BOARD

reliance electric Variable Frequency Drive VTAC 50hp

Reliance Electric GV3000/SE Sensorless AC Drive 3V2160

1 NEW RELIANCE ELECTRIC 7 1/2 HP AC INDUCTION MOTOR

RELIANCE ELECTRIC 3HP DC MOTOR T FRAME 1600RPM 500V

RELIANCE ELECTRIC 60 HP DC MOTOR B2810ATY XLNT COND

RELIANCE ELECTRIC 0-51865-15 CLDR 05186515 GUARANTEED

E19-2 Reliance Electric-Craft 0643-33-004 Servo Motor

RELIANCE ELECTRIC 86466-60S USPP 8646660S

Reliance Electric 2SR41200 Snubber 1200 Watt for 460V

RELIANCE ELECTRIC ANALOG INPUT MODULE 0-57409-C

New Reliance Electric Transductor 0-51831-6 #29001

RELIANCE ELECTRIC 57C-494 USPP 57C494

RELIANCE ELECTRIC 6SP44005 NSFP 6SP44005

RELIANCE ELECTRIC 45C-201 USPP 45C201

RELIANCE ELECTRIC 45C-201A USPP 45C201A

RELIANCE ELECTRIC 45C-201C USPP 45C201C

RELIANCE ELECTRIC 45C-203 USPP 45C203

RELIANCE ELECTRIC 45C-380 USPP 45C380

RELIANCE ELECTRIC 45C-381 USPP 45C381

RELIANCE ELECTRIC 45C-381A USPP 45C381A

RELIANCE ELECTRIC 45C-381B USPP 45C381B

Reliance Electric Drive Board 8041510A 804.15.10A

Reliance Electric Drive Board 8042510B 804.25.10B

Reliance Electric Drive Board 8044620E 804.46.20E

Reliance Electric 2GU41010 10 HP 460V AC Drive

RELIANCE ELECTRIC 07221-120 CRCF CARD NEW !

RELIANCE ELECTRIC 0-52837 ACCA PC BOARD

RELIANCE ELECTRIC 0-51831-7 CVTH PC BOARD

RELIANCE ELECTRIC 0-52837 ACCA

RELIANCE ELECTRIC 0-52837 ACCA CARD

RELIANCE ELECTRIC 0-51831-7 CVTH CARD

RELIANCE ELECTRIC 86475-S NSFP 86475S

RELIANCE ELECTRIC 0-51845-1 NSPP 0518451

RELIANCE ELECTRIC 0-54200-2 USPP 0542002

RELIANCE ELECTRIC 0-52712-5 USPP 0527125

RELIANCE ELECTRIC 411027-4T USPP 4110274T

RELIANCE ELECTRIC 57C-433 USPP 57C433

RELIANCE ELECTRIC 0-52808-2 OLVC CARD 0528082 NIB

60 hp Reliance Electric Motor

RELIANCE ELECTRIC 418227-1A "NIB" 4182271A 74V DC COIL

RELIANCE ELECTRIC 0-51847-3 VLDD CARD

RELIANCE ELECTRIC 64418-WA USPP 64418WA

RELIANCE ELECTRIC 107075-012R USPP 107075012R

Reliance Electric 57C421A/57C-421A / 57C421

2 NEW RELIANCE ELECTRIC OLVC MAXPAK PC CARD 0-52808-2

 100 HP Reliance Electric Motor

Reliance Electric 45C-15/45C15 Controller

Reliance Electric 57412-D/57412D/57412/0-57412-D

Reliance Electric 0-57210-20 DC1 Control Board NEW

RELIANCE ELECTRIC 61C-366 NSFP 61C366

RELIANCE ELECTRIC 7V2260 USPP 7V2260

RELIANCE ELECTRIC 0-48647-00AQR USPP 04864700AQR