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。

AB 1772-ME16 Memory Module 16K Words 1772ME16 fits Allen-Bradley

Honeywell I/O Link Exterior 51304476-100 Rev B

MOXA EDS-408A-MM-SC Ethernet Switch Rev 2.1.0 Output 1A 24VDC Resistance

AB 1771-ASC iversal Remote I/O Adapter Module  Refurb fit Allen Bradley

Sullair Repair Service Kit Minimum Pressure Valve Kit 02250050-633

KIEPE Electric 91043450002 Pull Rope Wire Emergency Switch HEN002

3M MT7H7A4310-AZ Peltor LITE-COM Plus Headset with Built-In Two Way Radio Audio

Siemens Ruggedcom RS900 60GK6090-0AS21-0BA0-ZA01B01 Ethernet Switch 8-Port

GCE Mediline 8376575 Valve Mediflow Duoline High Pressure Regulator 58381

Honeywell R4348A1018 Frame Relay 18VA 4A

SPXFlow PB1230D Puller Blanket Mechanical Hydraulic Retention Blanket Clear

AB 1771-E3C 1771E3C Analog Input Expander fits Allen Bradley

Bosch Rexroth R900566273 R900221884 M-3SEW6C3X/420MG24N9K4 1.25A 24VDC EP1212

ABB DSCA-114 57510001-AA Asynchronous Commication PLC Circuit Board

AB 849-ZOD331 Pneumatic Timing Relay 120V-60Hz or 110V-50Hz fits Allen Bradley

Spirax Sarco 1506085 Maintenance Kit TD120M

Hitachi CPU21-02H Programmable Controller Module

FG Wilson 10000-65982 PCB Generator Circuit Controller Board 462-0515 C3.3 C4.4

Merlin Gerin 31670 Circuit Breaker Compact NS250H TM250D 3P3D 250A

Merlin Gerin 29632 Circuit Breaker Compact NS100N TM63D 3P3D 63A

Schneider Electric 56170 Current Monitoring Relay RH99M Vigirex 12-24V 50Hz

Honeywell I/O Link Interface 51303979-400

NIFE 52-20256-220 PCB Circuit Board

Liebert Hiross L82500-99 Auxiliary Converter Quasar

CPS11D-7AA21 EndressHauser pH Electrode Sensor

GE Fanuc IC695PSD040 Power Supply 40W 24VDC RX3i PAC Sys IC695PSD040J

MTU 0035352231 Crankcase Pressure Sensor

OMRON E3MC-x11 Proximity Sensor Photoelectric Switch 12 to 24VDC

Hitachi POM-RW HIZAC EM Relay 16 Channel Output Module 33016133-6

Hitachi PHM-DTW I/O Mixed Module 9mA 24VDC 8 Point Controller

Sauer Danfoss 157B9802 Main Flow Control Spool PVBS 32 f. PVML Proportional Valv

National Instruments GPIB-PCII GPIB Interface Card ISA BUS Assy 181065 02E Rev E

Honeywell 91929 Micro Switch Limit Top Plger Wire Lead 7A MS21321-1

Caterpillar 517-7109 Micro Switch Limit Assy Top Plger Wire Lead 7A 91929 CAT

Fujitsu 9707393095 Controller PCB Assy Control Board K060AK-060AHSE-C1

Mettler-Toledo 58031422 Conductivity Sensor INPT 4E CPVC/SS ISM

Marechal 6164197 DSN6 Socket Outlet 3PNE 63A 690VAC Size 3 IP66//67

Bently Nevada GE 330105-02-12-05-02-05 3300 XL 8MM Sensor Probe Vibration 124570

Lowara 6GS05 Submersible Pump Deep Well 4" 0,55kW 2 Port 3 Phase Motor

ABB 1SDA050878R1 Circuit Breaker 3P 100A 16kA 415V SACE TMAX T1B 160

WAGO 750-833 I/O System Profibus Controller Slave

BWD Instruments BWD 603B Mini Lab Laboratory System

Lowara 2GS02 Submersible Pump 2GS Series 4" 0,25kW 0.5 HP 3 Phase Motor

Vovo Penta 41103018 FDC 2700 Bilge Pump 48.4 l/min 24VDC 0.25kW

Renfroe SCPA 1/2 Ton Locking-Screw Lifting Plate Dog Clamp 0-19mm 3/4 inch 500kg

SprecherSchuh CA5-CP-GH78 Main Poles CA5-CP1200 22.811.201-01 for CA5 Contactor

Lowara 1GSL02 Submersible Pump GS Series 4" 0.25kW 3 Phase Motor

Electroswitch 7810D LOR Rotary Switch Lockout Relay 125VDC 24 Series

GE 12HFA54L187H HFA Multi Contact Auxiliary Relay 125V Reset Coil 125VDC CY

UPI CWQ-34 Watt and Var Transducer 3 Phase 1A 110VAC 50Hz 4-20mA DC

AB 771-IAU1 AC Input Module fits Allen-Bradley

Bosch Rexroth R978859321 Valve Hydraulic 4 Way NG25 Directional Valve

ASHCROFT Differential Pressure Gauge KL.1,6 DP 0-10kPa 6" SS 0.5" NPTF

ELPRO 5U RF Power Amplifier 440-480 Mhz Rf Power 5W

Falk Rexnord 0209018 8f Hub Grid Coupling RSB 10034970 Steelflex

Digital KDJ11-A Processor 5015394-01 E1-P1 M8192-YB E07 20000397 PCB Board

Klockner Moeller DILM150 xStart Contactor 160A 3 Pole DIL M(C)150

BROOKS MT3809 2" Variable Area Flow Meter MT3809EZ3541 3809EZ3541

BROOKS MT3809 2" Variable Area Flow Meter MT3809EZ3542 3809EZ3542

Stahl 6161/2-61 Flashing Beacon Signalling Device 5J 12-48VDC 24-42VAC Yellow

GE Fanuc IC697MEM731B Circuit Card Assembly Series 90-70 128K CMOS Memory 781/78

GE Fanuc IC697MDL750F Series 90-70 Pos Logic (32) Points Operation Module

Hitachi BSM-7A Programmable Controller Module

Flamgard 10027293 Actuator Size 30-10 4 Springs 4-10 BAR Serial No. 4509

Wilco Clipsal WMP563 Straight Plug 5 Pin 63A Rod Metal Clad Aluminium 500VAC

Calpeda 31200563000 Impeller MOD 0782 BN 65-160C/B 65-160C/C BNM

Hitachi AGM-O Output Module Analog 4 Point 4-20mA 8 Bit EM2/3 Controller

EndressHauser Soliphant T FTM20-AA45A Point Level Limit Switch for Silos

Schneider 140ACO02000 Modicon Quantim Dio Drop Interface Analog Output 4 Channel

Schneider 50441 Merlin Gerin Vigirex Closed Toroid SA 200

Rosemot 3051 3051CG Gage Pressure Transmitter CG3A02A1AI7H2L4P1 0-248.642KPA

Rosemot 3051 3051CG Gage Pressure Transmitter CG3A02A1AI7H2L4P1 0-1000 in H2O

CEAG EX-Lite N (Neutral) Emergency Exit Light 277V AC 50Hz 250V DC IP66

Endo ELF-9 Series Spring Balancer 2.5cm 5-9kg PWB Anchor ED-280329

Demag Mannesmann 46966444 FGB-1 Hoist Overload

GE Fanuc Emerson IC694MDL940D Output Relay Module 2A 16 Point RX3i Series

Schneider I-LINE PNS250GNS Busbar Trking System Plug-in Type 415V 250A 3LNPE

ECCO EC5603-K Camera Kit Gemineye 5.6'' LCD Colour 4 Pin 3 Cams

Larzep W22307 700bar 2.4L 2-Speed Hydraulic Hand Pump  Gauge  Hose Porta Power

Motorola 6 Bay Multi it Charger Impres Smart WPLN4121BR WPLN4118BR Suits XTS

Stahl 4533000180 ZB Conical Hoist Disc Brake Complete Suits AS5020-16

BOBRICK B700 B-700 208-240V 9-10A Aircraft Automatic Hand Dryer Surface Moted

Caterpillar CAT 5N-8363 Cover A

ion Switch  Signal N451052 3185 AFO - II C Receiver

Danfoss MCD 202 Compact Starter 3 Phase 200-440VAC 50/60 Hz MCD202-030-T4-CV1

McLaren 1211A4893CP Door Latch RH 11A4893CP.02 for McLaren Vehicles

McLaren 1211A6213CP Door Latch RH 11A6213CP.01 for McLaren Vehicles

McLaren 1211A6212CP Door Latch LH 11A6212CP.01 for McLaren Vehicles

AB 1756L55M13 ControlLogix Logix5555 Processor 1.5 MB  fit Allen Bradley

ABB du/dt Filter NOSH-0030-32 Kit 61445439 Frequency Inverter 34A 380-500V IP21

Temperz046-000-302 Duplex Shaft BLDC Fan Motor 1.25kW 380VDC Brushless

FLENDER Siemens N-EUPEX 225 Part 1 HUB bored N-EUPEX.T01.225.STD FLEX A225

Vegawell Vega 52 Transmitter 4-20mA Pt100 6m Cable WL52 XXA4AKD1CC1X No Clamp

Vega Vegawell 72 Transmitter 4-20mA HART Pt100 WELL72 XXA4AKD1CHX

Vega Vegawell 52 Transmitter Transducer 4-20mA Pt100 WL52 XXA4AKD1BC1X  6m Susp

Wellmaster 6″ Layflat Bore Hose Coupling 150mm MI BSP Stainless Steel

Rosemot 3051 Pressure Transmitter CG4A03A1KM6I7L4P1O4O8A8089

Caterpillar CAT 184-6232 Harness 793C 789C 784C 785C

SIEMENS SINAMICS G120 PM230 6SL32230DE215AA1 Power Module FSA - FSC IP55 1.5kW

Satchwell ZRM 2201 Port Valve Actuator 472-2-201 R Series

Merlin Gerin 29633 Circuit Breaker Compact NS100N TM40D 3P3D 40A 3P

RMS 6RM302 3A22K17 3A022K17 Auxiliary Relay Monitoring Module 125V DC

RMS 2HSM512 2HSM512B2 2HSM512B2-C-13M00B High Speed Trip Tripping Relay 6R 48VDC

Progress Rail 227735-100 Transducer Assembly Advanced iversal Wheel Sensor

Grdfos 96294823 Bearing Kit S-Range FR70

Grdfos 96546840 Kit Motor Cable 25mm2 8m Range S3 Fits MMS8000

Wabtec Graham-White 975-075 Final Filter Air Dryer Electro Motive 9559346

TARBY 3TL6 CDQ 400-32 BDCA Stator Pump Suction OD101.6mm J16132902301 31/2"NPT

Hitachi BSH-10 Programmable Controller Rack

Ashcroft 60-1377-SS-04B-2500KP Duragauge 6 Inch Dial Connector Back

Coolon EWL-GRN-EML MP 11W Eye Wash Station Eye Luminaire LED Safety Beacon Light

Honeywell Commication Module 51303976-400 with Card 51304042-100

EATON CROUSE-HINDS GHG5123506R0001 CEAG Coupler Socket 32A 5 Pin 415V 6H

Schneider A9N18437 Circuit Breaker MCB Acti9 C120H 4P 125A 15kA B Curve

CABAC Heat Shrink Insulation Red XLP76RD 76 mm Thin Wall 38.1 25m Heatshrink

CABAC Heat Shrink Insulation Blue XLP76BL 76 mm Thin Wall 38.1 25m Heatshrink

CABAC Heat Shrink Insulation White XLP76WH 76 mm Thin Wall 38.1 25m Heatshrink

CABAC Heat Shrink Insulation Yellow/Green XLP76YG 76 mm Thin Wall 38.1 25m

Foxboro 47-BAA1A 47 Series Magnetic Flow Transmitter

Schneider Telemecanique BMEXBP0400 Modicon Rack X80 4 Slots Ethernet Backplane

CCC Series 5M IOM I5-1/5200/5200 Controller Module Processing System

CCC Series 5M IOM I5-1/5201-4/5200 Controller Module Processing System

CCC Series 5 IES Integrated Ethernet Switch x 2  IES Cable CAT5E-0.5-Blue IES-1

Klockner Moeller NZM6-63 Switch Disconnector Isolator 63A 400/415Vac

Parker Hannifin D3W4CNJPS7 -30 Directional Control Valve Double Solenoid 3 Posit

Demag 26099033 Wear and Tear Set B680 Friction Disc

Hitachi REM-LH2 Programmable Controller Host Link Module H-200 Series

Cummins 4964184 Harness Wiring Genuine Part

COOLON TNR-NLS-CWT-SY1-MP Tnel Ray LED Luminaire Light 66W No Daylight Sensor

SAFE-T-Pull STP-SSB-2 Emergency Stop Lanyard Switch Trip Pull Wire 315 SS