福建中立恒自动化设备有限公司
主营产品: 大型DCS系统备件,进口工业机器人备件,大型伺服系统电机驱动器,变频器,传感器,安全栅,编码器,电磁阀,流量计等机械或电气部件产品
0100-00583板卡等工控备件优势经销

福建中立恒自动化设备有限公司


1.输入/输出单元

输入/输出单元通常也称I/O单元或I/O模块,是PLC与工业生产现场之间的连接部件。

PLC通过输入接口可以检测被控对象的各种数据,以这些数据作为PLC对被控制对象进行控制的依据;同时PLC又通过输出接口将处理结果送给被控制对象,以实现控制目的。

由于外部输入设备和输出设备所需的信号电平是多种多样的,而PLC内部CPU的处理的信息只能是标准电平,所以I/O接口要实现这种转换。

I/O接口一般都具有光电隔离和滤波功能,以提高PLC的抗干扰能力。另外,I/O接口上通常还有状态指示,工作状况直观,便于维护。

PLC提供了多种操作电平和驱动能力的I/O接口,有各种各样功能的I/O接口供用户选用。I/O接口的主要类型有:数字量(开关量)输入、数字量(开关量)输出、模拟量输入、模拟量输出等。

常用的开关量输入接口按其使用的电源不同有三种类型:直流输入接口、交流输入接口和交/直流输入接口。

常用的开关量输出接口按输出开关器件不同有三种类型:是继电器输出、晶体管输出和双向晶闸管输出。

继电器输出接口可驱动交流或直流负载,但其响应时间长,动作频率低;而晶体管输出和双向晶闸管输出接口的响应速度快,动作频率高,但前者只能用于驱动直流负载,后者只能用于交流负载。

PLC的I/O接口所能接受的输入信号个数和输出信号个数称为PLC输入/输出(I/O)点数。I/O点数是选择PLC的重要依据之一。当系统的I/O点数不够时,可通过PLC的I/O扩展接口对系统进行扩展。


2.通信接口

PLC配有各种通信接口,这些通信接口一般都带有通信处理器。

PLC通过这些通信接口可与监视器、打印机、其它PLC、计算机等设备实现通信。

PLC与打印机连接,可将过程信息、系统参数等输出打印;与监视器连接,可将控制过程图像显示出来;与其它PLC连接,可组成多机系统或连成网络,实现更大规模控制。

与计算机连接,可组成多级分布式控制系统,实现控制与管理相结合。远程I/O系统也必须配备相应的通信接口模块。


3.智能接口模块

智能接口模块是一独立的计算机系统,它有自己的CPU、系统程序、存储器以及与PLC系统总线相连的接口。

它作为PLC系统的一个模块,通过总线与PLC相连,进行数据交换,并在PLC的协调管理下独立地进行工作。

PLC的智能接口模块种类很多,如:高速计数模块、闭环控制模块、运动控制模块、中断控制模块等。

CLARK DOOR CD1115 PC BOARD REV.C

CLEVELAND MACHINE CONTROLS MO-04919 DANCER CARD MO04919

CLEVELAND MOTION CONTROL MO-02386 PC BOARD C41-9658A MO02386

CLEVELAND MOTION CONTROLS MPA-09035 ADJUSTABLE SPEED DRIVE MPA09035

CLIMATRONICS 100087 TEMPERATURE TRANSLATOR BOARD 400170

CLIMATRONICS 100163 CONTROL CARD

CLIMATRONICS 100163 CONTROL CARD

CLIMATRONICS 100829 PC BOARD

CLIMATRONICS 100829 PC BOARD

CLIMATRONICS 101035 REV. X SIGMA CARD

CLIMATRONICS 101035 REV. X SIGMA CARD

CLIMATRONICS 101035 REV. X SIGMA CARD

CLIMATRONICS 101035 REV. X SIGMA CARD

CLIMATRONICS 400171 WIND TRANSLATOR BOARD 100163-G9-J1 F-460

CLIMATRONICS 400171 WIND TRANSLATOR BOARD F-460

CLIMATRONICS 400171 WIND TRANSLATOR BOARD F-460

CLIMATRONICS CORPORATION 400589 CIRCUIT BOARD REV H 100779

CMC B41-5790B CIRCUIT BOARD B415790B

CMC B41-5790B CIRCUIT BOARD B415790B

CML-011 2 PCB CARD 32004126 REV D

CML-011 2 PCB CARD 32004126 REV D

CNI AX483/B BOARD S726

CNI AX483/B BOARD S726

COFFIN WORLD WATER HSPB0053 PCB BOARD 2504BE2V-0

COFFIN WORLD WATER HSPB0053 PCB BOARD 2504BE2V-0

COFFIN WORLD WATER SYSTEMS HSPB0053 PCB BOARD 2504BE2V-0

COIL TECHNOLOGY CB-5101M PROCESSOR BOARD CB5101M

COIL TECHNOLOGY CB-5101M PROCESSOR BOARD CB5101M

COIL TECHNOLOGY XC1116-1 CONTROL CARD XC11161

COIL TECHNOLOGY XC1116-1 CONTROL CARD XC11161

COLE PARMER B-2176-1 DISPLAY BOARD B21761

COLE PARMER B-2176-1 DISPLAY BOARD B21761

COLORADO MEMORY SYSTEMS 026-328 JUMPERLESS TAPE CONTROLLER REV. B

COLT INDUSTRIES M1756-U50670 PC INTERFACE BOARD M1756U50670

COLT INDUSTRIES M1756-U56286 PC BOARD M1756U56286

COLT INDUSTRIES M1756-U56286 PC BOARD M1756U56286

COLT INDUSTRIES M1756-U56286 PC BOARD M1756U56286

COLT INDUSTRIES M1756-U56286 PC BOARD M1756U56286

COLT INDUSTRIES M1756-U56363 PROCESSOR BOARD M1756U56363

COMMANDER 400 ENGINE PROTECTION PCB L9596-1 / FAST SHIP DHL OR FEDEX

COMMANDER SNUBBER L9572-1 ARC 010599 PCB / FAST SHIP DHL OR FEDEX

COMMTECH LCI-1-0 PCB BOARD MODULE LCI10

COMMTECH LCI-1-0 PCB BOARD MODULE LCI10

COMMTECH LCI-1-0 PCB BOARD MODULE LCI10

COMMTECH LCI-1-0 PCB BOARD MODULE LCI10

COMMTECH LCI-1-0 PCB BOARD MODULE LCI10

COMMTECH LCI-1-0 PCB BOARD MODULE LCI10

COMPUMOTOR 61-001528-02 SERVO BOARD 6100152802

COMPUMOTOR 61-001528-02 SERVO BOARD 6100152802

COMPUTER AUTOMATION 73-53526-08C-23 PC BOARD 735352608C23

COMPUTER DYNAMICS PIO-48/64 C PC BOARD PIO4864C

COMPUTER DYNAMICS PIO-48/64 C PC BOARD PIO4864C

COMPUTER DYNAMICS PIO-48/64-D PC BOARD PIO4864D

COMPUTER DYNAMICS PIO-48/64-D PC BOARD PIO4864D

COMPUTER POWER GROUP STD4100 PC BOARD 4100

COMPUTER POWER GROUP STD4100 PC BOARD 4100

COMPUTER PRODUCTS 510094 POWER SUPPLY BOARD REV D MC1368B

COMPUTER PRODUCTS NAN25-7612 POWER SUPPLY UNIT 514807 REV E

COMPUTER PRODUCTS PM542 PC BOARD

COMPUTER PRODUCTS PM542 PC BOARD

COMTROL H0XX5016A HOSTESS 550 16-PORT CIRCUIT CARD

CONAIR 107-299-01 DISPLAY BOARD REV.A 10729901

CONAIR 107-299-01 DISPLAY BOARD REV.A 10729901

CONAIR 108-521-04 PC BOARD 10852104

CONAIR 108-521-04 PC BOARD 10852104

CONAIR 108-891 TIMING BOARD 108891

CONAIR 108-891 TIMING BOARD 108891

CONAIR EB17DRY PC MEMORY BOARD

CONAIR EB17DRY PC MEMORY BOARD

CONAIR EB17DRY PC MEMORY BOARD

CONAIR EB17DRY PC MEMORY BOARD

CONNECT CONTROLLER CARD PCB 65827 DFLEX2-4 REV B / FAST SHIP DHL OR FEDEX

CONSILIUM AKK-2 REV RIB PCB CARD

CONSILIUM AKK-2 REV RIB PCB CARD

CONSILIUM AKK-2 REV RIB PCB CARD

CONSILIUM MARINE 754E-K PCB 754EK

CONSILIUM MARINE 754E-K PCB 754EK

CONSILIUM MARINE 754E-K PCB 754EK

CONSILIUM MARINE 754E-K PCB 754EK

CONSILIUM MARINE 754E-K PCB 754EK

CONSILIUM MARINE 754E-K PCB 754EK

CONSILIUM MARINE 759G PCB 759-G

CONSILIUM MARINE 759G PCB 759-G

CONSILIUM MARINE SWM-761BS-B PCB 761BS-B

CONSILIUM MARINE SWM-761BS-B PCB 761BS-B

CONSILIUM PCB BDP-1 5100425-00 REV A03 / FAST SHIP DHL OR FEDEX

CONSILIUM PCB BOARD CS-LOOP M H 6303445 A3 / FAST SHIP DHL OR FEDEX

CONSILIUM SALWICO CS3000 GPM-4 R3 FIRE DETECTION PCB CARD

CONSILIUM SALWICO CS3000 GPM-4 R3 PCB CARD

CONSILIUM SALWICO CS3000 GPM-4 R3 PCB CARD

CONSILIUM SALWICO CS3000 GPM-4 R3 PCB CARD

CONSILIUM SALWICO CS3000 GPM-4 R3 PCB CARD

CONSILIUM SALWICO MCP-A MANUAL CALL POINT 5200031-01A


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