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。

Allen Bradley 163209 Drive Board Pcb Rev 12

Allen Bradley 170131 Field Pulse Pcb Circuit Board

Allen Bradley 170770 Pcb Circuit Board

ALLEN BRADLEY 170947 DRIVE BOARD

ALLEN BRADLEY 170948 CONTROL SYSTEM BOARD

Allen Bradley 170949 Interface Pcb Circuit Board Rev 04

Allen Bradley 170949 Interface Pcb Circuit Board Rev 07

Allen Bradley 170952 Drive Power Stage Interface Board Ser A

ALLEN BRADLEY 1720-B1404 SER. E AC OUTPUT BOARD

ALLEN BRADLEY 1741-M1 SERIES A MEMORY CARD

Allen Bradley 1756-L74 Series B ControlLogix Logix5574 16MB Memory Controller

Allen Bradley 1756-L83E /B ControlLogix5580 Logix 5580 10MB USB/ENet Controller

Allen Bradley 1756-L83ES /B GuardLogix 5580 15MB USB/EtherNet Safety Controller

Allen Bradley 1769-L23E-QB1B /B CompactLogix Packaged 32-P I/O E-Net Processor

ALLEN BRADLEY 1771ID ISOLATED AC OUTPUT CARD

Allen Bradley 1771-N2 /A PLC-5 I/O Empty Slot Filler Card Qty

Allen Bradley 1772-LH Processor Interface Module Pcb

Allen Bradley 1772-LI Processor Control Pcb Circuit Board

Allen Bradley 1772-MEB 960235 Ram Memory Module Pcb

ALLEN BRADLEY 1784-F30B COMMUNICATION BOARD

ALLEN BRADLEY 1784-KTCX15 SER. B COMMUNICATION INTERFACE CARD

ALLEN BRADLEY 1784-KTP SER. B COMMUNICATION INTERFACE CARD

Allen Bradley 1784-PCC Controlnet Communication Card Ser B

Allen Bradley 1784-PCD Devicenet Communication Card Ser C

Allen Bradley 1784-PCMK /B PCMCIA RIO/DH-485/DH Communication Card

Allen Bradley 1784-PKTX Communication Card Ser A

Allen Bradley 1784-PKTX Network Interface Card Ser B

Allen Bradley 185694 170095 Main Control Board Rev 17

Allen Bradley 185694 Main Control Board

Allen Bradley 194169 Pcb Circuit Board

Allen Bradley 20-750-2262C-2R Powerflex I/o Option Card Ser A

Allen Bradley 20-750-S3 Powerflex 750 Safety Network Card Ser A

Allen Bradley 20-750-UFB-1 /A PowerFlex 755 Universal Feedback Board

Allen Bradley 20D-RES-A1 Powerflex 700s Resolver Feedback Option Pcb

Allen Bradley 20-VB00601 /A PowerFlex 700S / 700H DPI Interface Board Qty

Allen Bradley 22DJ2-3000 Photoswitch Control Card

Allen Bradley 22DJ4-3000 Photoswitch Sensor Sensitivity Card Ser B

ALLEN BRADLEY 2364-SPM01B SER. A RGU MAIN CONTROL PCB SP-185558

ALLEN BRADLEY 2364-SPM01C SER.C RGU MAIN CONTROL PCB, VERSION 3.01FACTORY SEAL

Allen Bradley 2364-SPM03A Pcb Circuit Board

ALLEN BRADLEY 2364-SPP01A SER. A PILOT:BUS INDICATOR PCB, FACTORY SEALED

ALLEN BRADLEY 2364-SPP01A SER.A PILOT:BUS INDICATOR PCB

Allen Bradley 2711-NM216 Series A 16MB Flash ATA Memory Card

Allen Bradley 2711-NM232 Series A PanelView 32 MB Flash ATA Memory Card

Allen Bradley 2711P-RP1 Ser G PanelView Plus Logic Module 64MB Flash/RAM 24VDC

Allen Bradley 2711P-RW1 Series B PanelView Plus 32 MB Internal CompactFlash Card

ALLEN BRADLEY 2945401802 KEY PAD AND CONTROL BOARD

ALLEN BRADLEY 3100-CPU SERIES B CPU BOARD

ALLEN BRADLEY 3100-DO SERIES A DIGITAL OUTPUT BOARD

Allen Bradley 319828-A01 Drive Board

Allen Bradley 319830-A01 Drive Guard Card

ALLEN BRADLEY 3400-TB SERIES A PC BOARD

ALLEN BRADLEY 3500-A68 SER. A PULSE AMPLIFIER BOARD

ALLEN BRADLEY 3500-CBS CBU SUPERVISION CARD

ALLEN BRADLEY 3500-RDO SER. A RELAY OUTPUT BOARD

ALLEN BRADLEY 40279-030-5 CIRCUIT BOARD

ALLEN BRADLEY 42304-101-07-A CIRCUIT BOARD

ALLEN BRADLEY 42336-197-06A CIRCUIT BOARD

ALLEN BRADLEY 42RLU-4000B-PCB

Allen Bradley 440F-E0110S05 Guardmaster Profile Guardmaster

Allen Bradley 440L-AM0751650 Guardmaster Guardshield Corner Mirror

Allen Bradley 440L-R4KL0320YD Guardmaster Guardshield Light Curtain Receiver

Allen Bradley 440L-T4KL0320YD Guardmaster Guardshield Light Curtain Transmitter

ALLEN BRADLEY 501565 / 501565 PCB ASSY POWER SUPP

ALLEN BRADLEY 50347-001 LOGIC BOARD

ALLEN BRADLEY 50387 MODULATOR LOGIC BOARD

ALLEN BRADLEY 50405 DISCHARGE BOARD

ALLEN BRADLEY 50478 REV-09 DISPLAY BOARD

Allen Bradley 507618 Pcb VFD Control Panel Board Operator

ALLEN BRADLEY 50905-002 DRIVER BOARD

ALLEN BRADLEY 50906 REV. 08 POWER DISTRIBUTION BOARD 3-10HP

ALLEN BRADLEY 5130-RM SER.A RESOURCE MANAGER HOST BOARD

Allen Bradley 634208A Pcb Circuit Board

ALLEN BRADLEY 634384E90 CONTROL BOARD UNMP

Allen Bradley 634435B Pcb Circuit Board

Allen Bradley 634435B-90 Pcb Circuit Board

Allen Bradley 634436 Pcb Circuit Board Rev 6

Allen Bradley 6345349 Pcb Circuit Board Rev 3

Allen Bradley 63459 Uoh Relay Pcb Board

Allen Bradley 634592 Uoh Relay Pcb Board

Allen Bradley 634834-90 Power Supply Board Pcb Circuit Board

Allen Bradley 635005 Pcb Circuit Board Rev 3

Allen Bradley 635050 Pcb Circuit Board Rev 2

Allen Bradley 635050-90 Pcb Circuit Board Rev 2

ALLEN BRADLEY 635206 REV. 3 PC BOARD UNMP

ALLEN BRADLEY 635311 UVC BOARD UNMP

ALLEN BRADLEY 636016 EXTENDER BOARD

ALLEN BRADLEY 636027-90 PC BOARD

ALLEN BRADLEY 636028 PC BOARD

ALLEN BRADLEY 636036 PC BOARD

ALLEN BRADLEY 636042 CIRCUIT BOARD

ALLEN BRADLEY 74100-013-194169 PC BOARD ASSEMBLY REMOTE

ALLEN BRADLEY 74100-013-51 PC BOARD DRIVE ASSEMBLY

ALLEN BRADLEY 74100-017-53 PC BOARD

ALLEN BRADLEY 74100-070-05 SER. A DRIVE BOARD

ALLEN BRADLEY 8000-64KDD EXEC MODULE BOARD 906882-28 REV A01

ALLEN BRADLEY 8000-AAGM CIRCUIT BOARD 900105 REV-2E

ALLEN BRADLEY 8000-AF RESOLVER CIRCUIT BOARD 900072 REV-3

ALLEN BRADLEY 8000-AFA CIRCUIT BOARD 900072 REV-3

ALLEN BRADLEY 8000-AFZ CIRCUIT BOARD 900072-19 A01

ALLEN BRADLEY 8000-AGWB PCB CIRCUIT BOARD 900211-05 A01

ALLEN BRADLEY 8000FPCB MOTHER BOARD

ALLEN BRADLEY 8000-GB 635537 REV-2 CIRCUIT BOARD

ALLEN BRADLEY 8000-GB CONTROL BOARD 635537 REV-02

ALLEN BRADLEY 8000-GC CIRCUIT BOARD 900057-02

ALLEN BRADLEY 8000-GCC PCB OPERATOR INTERFACE 9404134-04 A01

ALLEN BRADLEY 8000-GDA PC BOARD 900018 REV-04

ALLEN BRADLEY 8000-GDB CONTROL INTERFACE BOARD 900018-04 A01

ALLEN BRADLEY 8000-GH CIRCUIT BOARD 634490 REV-6 947813518

ALLEN BRADLEY 8000-IOA CIRCUIT BOARD 900059 REV. E2

ALLEN BRADLEY 8000-IOBB CIRCUIT BOARD 900061-02

ALLEN BRADLEY 8000-IOBD PCB BOARD 800061

ALLEN BRADLEY 8000-KA PC BOARD 900034 REV-11

ALLEN BRADLEY 8000-KDHW PC BOARD 900087-01 A01

ALLEN BRADLEY 8000-MDG8 PC BOARD INTEL IMB268-4 921074 REV. 2

ALLEN BRADLEY 8000TSAAZ CIRCUIT BOARD

ALLEN BRADLEY 8000-TSBA 8000TSBA TERMINATION PANEL BOARD

ALLEN BRADLEY 8000-TSBAZ TERMINATION PANEL BOARD

ALLEN BRADLEY 8000-VADZ CIRCUIT BOARD 900036 REV-10

Allen Bradley 80165-178-51-R Gate Driver Pcb Circuit Board

Allen Bradley 80165-178-52-R Pcb Circuit Board

Allen Bradley 80190-600-01-R Optical Interface Base Pcb Board

Allen Bradley 81001-410-52-RP External I/o Board Test Kit

Allen Bradley 837-N12 Stainless Remote Standard Capillary 3-3/4in

ALLEN BRADLEY 8520-OFBM PC BOARD

ALLEN BRADLEY 8520-SPR0 CONTROL BOARD

ALLEN BRADLEY 8600-1699Y PC BOARD

ALLEN BRADLEY 900052 CONTROL BOARD

ALLEN BRADLEY 900061-9102 PC BOARD

ALLEN BRADLEY 960095 PC BOARD

ALLEN BRADLEY 960096 PC BOARD

ALLEN BRADLEY 960096REV-3 PC BOARD