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。

Telemecanique F10NOCR Auxiliary Interlock

Westinghouse 373B331G18 Contact Kit

SM-J08713 Proximity Switch

1 GE TED124070 70A CIRCUIT BREAKER

Bodine KYC-26 Electric Motor with Capacitor

Turnbull 8-LOOP 6358 Controller

Banner Engineering 2LM5-14 Logic Module

 Parker 6Fel6N-B A-Lok Female Elbow Fittings

Allen-Bradley Fiber Optic Cable with Adapter 443GT-TIS10MS

Hubbell Control Board Exit Sign HBL-8961

FASCO Industries 7121-10605 U21B 1/16 HP 460 VAC 3000 RPM HVAC Blower Motor

ASCO 027476-004-D Coil

Vickers Valve DG4V-3-2C-M-W-B-40

LEM LT-200-S Current Module

OMRON E3S-GS3E4 PHOTOELECTRIC SENSOR

1  OMRON E3S-GS3E4 PHOTOELECTRIC SENSOR

1 Allen-Bradley 800MR-FXP16RA ILLUMINATED PUSH PULL PUSH BUTTON

Cutler-Hammer 6-25-2 3 Pole Size 3 Contact Kit

1  Cutler-Hammer 6-25-2 3 Pole Size 3 Contact Kit

Barber Colman 72A-2787-2-6 Controller

Magnecraft TDRSRXP-120V Adjustable Off Delay/Shot Time Delay Relay

Allen-Bradley Commication Control Module 1771-KE

Parker K175803549 Solenoid Valve

Rexroth RR00874084 Seal Kit

50 EFD 7005003 5121TLC-B Precision Dispensing Tips

Balluff Bos 18M-PS-1XA-E5-C-S4 Tubular Photoelectric Sensor

Microswitch Push Button Illuminated PMHC105A1

Eaton 585-18 Coil

Stromadyn BEQ1 190208064 PC Board

MERCOID CONTROL DR -35-2L-8

GEMS Flow Sensor 29609

Numatics Solenoid Valve 082SA425M016T61

PBM SPHD5QG04 3/4" HL/GX/900 psig CWP 58129/001 Stainless Steel Ball Valve

Leybold Heraeus 591-81-223 28123-B2 Motorized Vacuum Valve

Marwin EU-2-5 Actuator Valve

S Hydraulics CWGA-LHN Coterbalance Valve

Johnson Controls A28AK-1C Air Duct Thermostat

Snap-Tite 6242BAE 2in Brass Solenoid Valve

MAC PR82A-GBBA PRESSURE REGULATOR

Allen-Bradley 1202-C10 SERIES A SCANPORT CABLES

IFM EfectorKb--Bb0A Sensor-

JOHNSON CONTROLS T-5500-1052 TEMPERATURE GAUGE

IFM Efector OAR-FPKG/US100 SENSOR-

Compeq 9328 D2-V0 94V-0 Meter

5 Littelfuse L50S-125 FUSES

Siemens 6FX7002-5EA31-1AK0 Preassembled Power Cable

1 LOT OF 17 MAXIM MAX396CAI ANALOG MULTIPLEXERS

Ashcroft T424TS027 Snap Action Switch

JOKAB SAFETY RT6

Ingersoll Rand 16W1B1081R02 Ball Nose End Milling Cutter

Custom Precision Products 19-1215-1.5-316L Valve Repair Kit

Klockner Moeller DILA-40 230/240V 50/60HZ Contactor

CKL106

Numatics REGULATOR ASSY I51RD100J063D00

CONVUM CVA-DN BREAK VALVE GENERATOR

Dayton 4Z411 Pneumatic Motor

LOT OF 10 Hubbell 4723VY PLUGS

Furnas D71628-40 Coil

RAMSEY ENGINEERING C06365E-0012B POWER SUPPLY BOARD

Littelfuse LLSRK-250 FUSE

Oriental Motor 5IK40GK-SM

1 WESTINGHOUSE 300V CONTROL RELAY BF66F

Mitutoyo 2804S-10 Dial Indicator

1  Mitutoyo 2804S-10 Dial Indicator

Miller Air Cylinder Piston 051-KR011-200

IFM EfectorL15041 Sensor

Balluff BES01UW Sensor

OMRON Photoeletric Switch Fiber E32-T14L

Fanuc IC697ACC702A Terminator Plug

Allen-Bradley 16 CH-AC OUTPUT MODULE 1746-OA16

 Allen-Bradley 16 CH-AC OUTPUT MODULE 1746-OA16

Allen-Bradley 700-PK800A1 Relay

GE 101X112 CONTACT KIT FOR VERTICAL-LIFT DEVICES

MAYR 02/440.504.0 CLUTCH

3 GE Contactors CR2810A14AC

1  3 GE Contactors CR2810A14AC

ADEPT TECHNOLOGY 10310-54020 INTERFACE BOARD

SCHNEIDER AUTOMATION INC 140 DDO 843 00 INPUT MODULE

Numatics DB81TLPR05M15S00 D

Square D 9007-B53B1-SB36 Limit Switch Assembly-

Telmar 577000 Temperature Transmitter 0-100 Degrees Celsius

Cutler-Hammer D40RBA TYPE R REED RELAY

ADVANCE 71A6071-001D CORE  COIL BALLAST KIT

Amstro Strobe Light With Timer 1104-S3-320-76

Inpro Vbx Seal Bearing Isolator 1908A-M0012-0

ABB MF845530 CIRCUIT BREAKER

Foxboro Card Signal Conditioner P0121KQ

Norgren 5350-08 AIR FILTER

Ross Repair Kit 280K87

Festo Pressure Switch PEV-1/4-B

Becker 518943 Vanes for Rotary Vane Vacuum Pump

Enertrols SA1/4X1/2S-B Shock Absorber

Reliance Electric Auto Reversing Card 0-54380

VIPA 221-1BH10 PLC Interface Module

Banner Engineering 16299 / LM5-14 Logic Module

Allen-Bradley 592-BOV169 NEMA Eutectic Alloy O/l Relay Man. Reset

1  Allen-Bradley 592-BOV169 NEMA Eutectic Alloy O/l Relay Man. Reset

Festo Cylinder DSNU-5/8-8 NWOB

Square D Pushbutton 250VAC 2.5A Seriplex Module 9001-KM351BPRT

MURR Elektronik 23 006 Motor Suppressor

Numatics F30D-04A Coalescence Filter

Siemens 6ES7131-4BD01-0AB0 PLC Input  Output Module

Banner Engineering NO5-Q08-AN7V1131 Photoelectric Proximity Sensor

WEG PESW18CAX-R23 Motor Starter

Brady 33941 Label Printer

WEG PESW12CAX-R21 Motor Starter

WEG PESW9CAX-R16 Motor Starter

Watlow LFC2HW0250AAAAA Limit LF Power Supply

Square D 8994-SYS80 Rack Mot Weld Control Module

MICRO SWITCH BAF1-2RQN8-RH Limit Switch

branded M42C POWER SUPPLY PC BOARD

Westinghouse 1605202 Contact Kit

1 VICKERS DG4V32AMWB VALVE

Allen-Bradley PLC-5 Ethernet Interface 1785-ENET A

Rexroth Z2FS6-2-43-1QV Double Throttle Hydraulic Valve

Lot Of 16 Parker Ge10Lreda3C Straight Stud Fittings

Allen-Bradley 74-A86 Coil

Red Lion Coter CUB10000

ited Electric J6-142-9508 Differential Pressure Switch

Deltrol EF30B Flow Control Valve

Westinghouse SIZE 3 (?

Allen-Bradley 800T-FXJTQH10RA1 PUSH BUTTON SWITCH

FANUC R-J3iB LOCAL STOP IT

MAC Valves 52A-11-B0A-DM-DFFJ-1KJ 24VDC 3-Way Solenoid Valve

Siemens 3TY6440-0A Main Contact Kit for 3TB44 Contactor

VIPA 221-1BF10 PLC Interface Module

ABB 3N2616 Tube Feed

Patlite MT-412-RAGB Red/Amber/Green/Blue Super Slim Stack Light

Turck BI15R-Q14-AP6X2 Inductive Sensor

Datalogic GWY-01-Ind-01 Rfi Interface Module

Red Lion Ditak II Model 101 Digital Tachometer DT-11A

Euchner Safety Switch TP4-4131A024M