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 RediPanel 2705-P12J3L Lighted Push Button Module

ALLEN BRADLEY S50385 SPARE OUTPUT GUARD SENSOR

ALLEN BRADLEY SZW10003-B

Allen Bradley TLY-A130T-HK62AN /A TL-Series Servo Motor 230V 0.32Nm

ALLEN BRADLEY ULTRA 1398-DDM-009-DN SER. A SERVO DRIVE (AS PICTURED)

ALLEN BRADLEY ULTRA SERIES 1398-DDM-010 SERVO DRIVE

ALLEN BRADLEY VPL-B1001M-PK14AA SER. A AC SERVO MOTOR 6000RPM

ALLEN BRADLEY Y-1002-2-H00AA SER. C SERVO MOTOR

Allen Bradley Y-2012-2-H00-X144 /A Servo Motor 230VAC 4500-RPM 0.4kW Qty

ALLEN BRDLEY MPL-A330P-HK22AA UNMP

ALLENAIR 30BY8B-C-120/60 AIR SOLENOID VALVE

ALLENAIR AV PNEUMATIC CYLINDER W/ SOLENOID VALVE

Allen-Bradley 1492-CB2G300 /C Manual Motor Controller/Circuit Breaker 30A 2P

Allen-Bradley 42GTR-9002-QD Ser A PHOTOSWITCH Photoelectric Sensor

ALLEN-BRADLEY 45FSL-2LWE-A2 SERIES A PHOTOELECTRIC SENSOR

Allen-Bradley 871L-B40E40-N3 /A 2-Wire Inductive Proximity Sensor

Allen-Bradley 9101-1699-015 /A ULTRA Series 100/200 Motor Feedback Cable 15 ft

Allen-Bradley Analog Interfaces 1492-AIFM6S-3 Wiring Module Ser. A 6-Kanal

Allen-Bradley Analog-Eingangsbaugruppe 1746-NI8 Analog Input Module Series A

Allen-Bradley Ausgabemodul 1794-OW8 A 8 Point Digital Output Relay Module Ser A

Allen-Bradley Ausgabemodul 1794-OW8 Digital Output Module 96223676 Ser A Rev B01

Allen-Bradley Ausgabemodul 1794-OW8 Digital Output Module 96223676 Series A

Allen-Bradley Basic Module 1794-TB3T A Flex Terminal Base 96224272 Ser. Rev.A01

Allen-Bradley Basic Module 1794-TB3T A Flex Terminal Base 96224274 Ser. Rev.A01

Allen-Bradley Basic Module 1794-TB3T A Flex Terminal Base 96224276 Ser. Rev.A01

Allen-Bradley Basic Module 1794-TB3T A Flex Terminal Base 96224276 Ser. Rev.A02

Allen-Bradley Basic Module 1794-TB3T A Flex Terminal Base 96224276 Ser. Rev.B01

Allen-Bradley Basic Module MSR42 440R-P226AGS-NNR Base Module Ser. A Rev.B 24 5v

Allen-Bradley Basismoduleinheit 1794-TB3 Flex Terminal Base Module Unit Series A

Allen-Bradley Bus Module 1794-TBNF Terminal Base 96176671 Series A Rev.E01

Allen-Bradley Communications Module 1734-AENTR Adapter PN-138004 Ser. W F/W

Allen-Bradley Communications Module 1747-DCM Direct Series A

Allen-Bradley Communications Module 1794-ACN15 Adapter 96462871 S.C

Allen-Bradley Communications Module 1794-ACN15 Communication PN-90471 Series C

Allen-Bradley ControlLog 16D/O Module,1756-OB16E, 1756-OB16E A

Allen-Bradley Dc Output Module 1774-OB (12-24 V) Max. 192 VA

Allen-Bradley Digital Ausgabemodul 1794-OW8 Digital Output I/O Module Rev.B01

Allen-Bradley Digital Input 1734-IB8 Input Module 92406871 Ser C Rev.A01

Allen-Bradley Digital Input 1734-IB8 Module 130651 Fw 3.022 Ser D

Allen-Bradley Digital Input Module 1794-IA8 Flex 8 Point Series A

Allen-Bradley Digital Module 1492-IFM40F-FS24-4 10-30V Series A

Allen-Bradley Display Module 2711-K10G8 Panelview Display Rev C Ser. C Frn 4.48

Allen-Bradley Extension 440R-P4NANS Extension Module MSR45E S A Rev B Hw 1.01

Allen-Bradley Flexbus Bus Module 1794-TBNF 96176674 Ser. A Rev.B02 230VAC 10A

Allen-Bradley Flexbus Bus Module 1794-TBNF Terminal Base 96176674 Serie A 230VAC

Allen-Bradley Fotoschalter 42SMR-7110 Photoswitch Series B Trans Beam Receiver

Allen-Bradley Frequency Converter PowerFlex 70 AC Drive 20A B 4P2A 0 Aynnnnn

Allen-Bradley I/O Input Module 1746-IB16 SLC500 Ser. C F/W N/A

Allen-Bradley I/O Module 1734-OB8 C Digital Output Module 1734 Series C Fw 3.022

Allen-Bradley I/O Power Supply 1769-PA2 Ser. A Rev.3 Bulletin 1769

Allen-Bradley Input Module 1734-IB8 Digital Input PN-130651 Series D Fw

Allen-Bradley Input Module 1734-IB8 Digital Input PN-130651 Series D Fw 3.022

Allen-Bradley Input Module 1734-IB8 Series D Digital PN-130651

Allen-Bradley Input Module 1734-IB8 Series D Fw 3.031 Digital Input PN-130651

Allen-Bradley Input Module 1734-IR2 Digital Input 1734-IRC Ser. C Fw 3.014

Allen-Bradley Input Module 1734-OE2C Digital Series C Fw 3.005

Allen-Bradley Input Module 1746-IM8 SLC500 Series A 230 VAC

Allen-Bradley Input Module 1746-IN16 Series C SLC500 10-30V AC/Dc

Allen-Bradley Input Module 1746-NI4 I/O Module Analog Series A

Allen-Bradley Input Module 1771-IFE 96188672 A01 Series C F/W Rev B Rev D01

Allen-Bradley Input Module 92406671 I/O Module 1734-IB4 Dc Ser. C Rev.A01

Allen-Bradley Input Module 96134473 D01 1771-IBD Series B Rev.F01

Allen-Bradley Input Module, CAT1734-IB4, CAT 1734-IB4

Allen-Bradley Interface Module 1492-AIFM16-F-3 Wiring Module 10-30VDC Series A

Allen-Bradley Interface Module 1734-485ASC Ser. C Fw. 4.002

Allen-Bradley Module 1734-OV2E Module Point I/O 2 Point 95756003 Ser. C Rev.C01

Allen-Bradley Motor Overload Relay 193-KB32 Series A 2.30-3.20 A

Allen-Bradley Motorkontroller C9NBR Smart Motor Controller Series B 3 Frn 2.11

Allen-Bradley Network Adapter 1734-AENT Network Module Series A Fw 2.003 Rev.A01

Allen-Bradley Network Adapter 1734-AENT Network Module Series A Fw 2.003 Rev.A02

Allen-Bradley Operating Terminal PanelView 900 Operator 2711-K9A8 Series E

Allen-Bradley Out/Input Module,1746-NI04V

Allen-Bradley Output Module 1734-OB4E Cup C 96429877 Series C Rev.

Allen-Bradley Output Module 1746-OW4 SLC 500 Series A 1746 Module

Allen-Bradley Output Module 1746-OW8 SLC500 8x Exit Series A

Allen-Bradley Output Module 1771-OBD/C Ser. C Rev.D01 96211471 E01

Allen-Bradley Output Module 1771-OBN B Rev.C02 Pn 96211671 Ser. B

Allen-Bradley Output Module 1771-OBN B Rev.F01 Pn 96211671 E01

Allen-Bradley Safe Input Module 1734-IB8S Digital Input PN-193342 Series B

Allen-Bradley Safe Input Module 1734-IB8S Series A Digital Input PN-19904

Allen-Bradley Safe Output Module 1734-OB8S Digital Output PN-193343 Ser B

Allen-Bradley Sensor Photoelectric 42GRL-9000-QD Photoswitch Trans Beam 148501

Allen-Bradley Sensor Photoelectric 42GRR-9001-QD Photoelectric Sensor Receiver

Allen-Bradley Sensor Photoelectric 42GRR-9001-QD Photoelectric Sensor Receivers

Allen-Bradley Servo Motor MPL-B430P-SK74AA Motor Pn 12227 Ser. A Overhauled

Allen-Bradley/AMCI 4-is Stepper Module,3204

Allied Telesis 2x10G uplink modules AT-XEM-2XP

ALLTEMP SENSORS TE-01615 7000 SERIES NSNP

Almost gone

ALOKA K-P-19 MOTOR DRIVER UNIT

ALPHA GEAR DRIVES LP070-M02-25-111-000 SERVO MOTOR

ALPHA GETRIEBE SK140-MF1-1-151-000 NSNP

ALPHA LP120-M02-25-111-000 GEAR MOTOR RATIO 25

ALPHA LP120-M02-25-111-000 NSNP

ALPHA LP-120-M02-25-111-000 SGMGH-05DCA6C UNMP

ALPHA LP155F-MF2-500-111-3S GEAR SERVO MOTOR

ALPHA SP100G-MF2-20-1E1-2S-PGG GEAR MOTOR RATIO 20

ALPHA SP100G-MF2-40-1E1-2S-PGG GEAR MOTOR RATIO 40 (AS PICTURED)

ALPHA SP100-MF2-20 SERVO MOTOR

ALPHA SP140-MF1-7 MOTOR

ALSTHOM DSH-S0705 SERVO DRIVE

ALSTOM EPSC-0069 COAL FLOW MONITOR MICROWAVE SENSOR

Alstom ESH-700-VL-FO Limelight Exacta Flame Scanner Assembly

ALTECH ITBN-M12-S2.0-FL-1030VDC 39962-4165 NSMP

ALTECH ITBN-M12-S2.0-FL-1030VDC 9962-4165 NSMP

Alvarion BMAX 4M AU 4CH Module 700201

AMAT 0021-53857 FLANGE DRIVE ROLLER BRUSH MODULE

AMAT 0040-04644 REV:005 MOUNT MOTOR UPPER DI ROBOT 300MM

AMAT 0040-84148 - SHAFT IDLE B* MODULE 300MM DESICA

AMAT 0140-07336 HARN ASSY MICROWAVE & HE CONTROL 300M

AMAT 0140-16586 HARNESS ASSY TURBO ON/OFF CONTROL

AMAT 0190-54120 I/I ON BOARD IS,CONTROLLER,PUMP MOUNT ,LEFT CABLE

AMAT 0190-83792 Rev 03 SERVO DRIVE Assy AMAT 1080-01809

AMAT 1270-03195 Level Sensor Applied Materials CMP / etch GEMS Sensors

Amat Applied Materials 0100-02157 Contactor Control Endura 300mm Board

AMAT Applied Materials 0150-42146 Cable Aassy, Precision Switch Sensors Producer

Amc 7751 Encoder Resolver Interface Module

AMCI 1741 ENCODER

Amci DC25F-B1NPRGMDE Duracoder Rotary Encoder 3/8in

AMCI DC25F-B1V4KE DURACODER

AMCI ENCODER IPCE-10-3 115V

Amci H25-F1E Rotary Encoder Transducer

AMCI HTT-20-180 TRANSDUCER

AMCI iPCE-10-3 PROGRAMMABLE ENCODER

AMERICAN AEROSPACE CONTROLS 1003AM1-5-B UNMP

AMERICAN AEROSPACE CONTROLS AC CURRENT SENSOR 1006-150

AMERICAN AEROSPACE CONTROLS AC CURRENT SENSOR 1006-250

AMERICAN AEROSPACE COTNROLS 1055-20 AC CURRENT SENSOR

AMERICAN AEROSPACE COTNROLS 1055-5 AC CURRENT SENSOR

AMERICAN SENSOR TECHNOLOGY 40A00500P4E0000 PRESSURE SENSOR 0-500PSI

AMERICAN-STANDARD 5-030-03-014-006 HYDRAULIC MOTOR

AMERICAN-STANDARD PD2-DRAIN (P52901-L25) SOLENOID VALVE