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。

545-5512 / PCB, PANEL/IF / HITACHI

853-077067-001 / CABLE ASSY. FOR RF GENERATOR / LAM RESEARCH CORPORATION

130699 / CONTROLLER, HI/LO LIMIT / WATLOW

8912-910 / GRAPHICS CARD AGP 4X, 64MB DVI/VGA

PK543-A-C8 / VEXTA STEPPING MOTOR, 5-PHASE, DC 0.75A, 1.7OHM / ORIENTAL MOTOR

545-5518 / PCB, PARA-I/F / HITACHI

0020-20114 / ISOLATOR DC BIAS / APPLIED MATERIALS AMAT

ETP-A-25-S / GUARD LOCK SAFETY DOOR SWITCH / MIKI PULLEY

0040-77440 / SUPPORT, R.H. COVER / APPLIED MATERIALS AMAT

SEM4BD-001 / SEMITOOL14843E CPU BOARD / SEMITOOL

710-401536-00 / PCB ENCODER INTERFACE BOARD KLA 5200 / KLA TENCOR

FAK24-4R2 / POWER SUPPLY 100-120V AC INPUT 24V DC OUT /TDK

HWS150-24-A / TDK-LAMBDA POWER SUPPLY 100-240VAC 2.0A 24V 6.5A / LAMBDA

EX250-SDN1-X102 / SERIAL INTERFACE IT,32 SOLENOID CONTROL / SMC

HWS300-12 / AC/DC POWER SUPPLY 12V-27A INPUT 100-240VAC OUTPUT 12V / TDK-LAMBDA

TAS-LED / CIRCUIT BOARD / TDK

011039050 / LDT POSITION SENSING SYSTEM ELECTRONIC  / MTS

CG1BA32-240 / SMC CYLINDER, CG1BA32-240 / SMC

CHAAA00000510 / SENSOR-LEVEL FL-7161-2 FI / SES CO, LTD (DBA SES INTERNAT

SM2320SQ / SMART MOTOR, SM2320SQ, 4.15C / ANIMATICS

0100-02075 / OVERRIDE PCB SA-BF3 / APPLIED MATERIALS AMAT

DM83H-1 / VORTEX86DX-SX, ISA HALF SIZE / V-AUTOMATION, INC

ZWS240PAF-24/TA HFP / PWR SPLY INPUT100-240VAC ~3.5A 50/60HZ OUTPU 24V 10A / TDK

0040-77438 / SUPPORT, L.H. COVER, PLATEN BELT ENDPOIN / APPLIED MATERIALS AMAT

BH8-0109-02 / FARMON ID 412500 BOARD / CANON

0010-01004 / LINE GAS FEED ASSY / APPLIED MATERIALS AMAT

PI0-IN / CABLE 34P FEMALE, FOR L6299-12 EXTERNAL CONTROL SIGNAL, PIO-IN / DNS

02-257556-00 / ASSY EBR DISP ARM MOLD XT MKB16-10RZ / SMC

SYJ3333-5LOZ / SOLENOID VALVE 4 PORT 3 POSN LAM / SMC

2081325-05 / PARTICLE COTER, 1CFM, R4815 / MET ONE

2-F2-D0791 2-F2-D0899 / TABLE FOR CASSETTE STAGE ON SK200 IFB / DNS SCREEN

0150-76496 / EMC COMP, CBL ASSY TURBO CNTRLR INTERCON / APPLIED MATERIALS AMAT

45-0006 / PCB, OPERATOR INTERFACE / TOSOH QUARTZ, INC

SGDH-04AE / AC SERVO DRIVER SERVOPACK / YASKAWA ELECTRIC

SGDH-04AE / AC SERVO DRIVER SERVOPACK / YASKAWA ELECTRIC

35-A812246798781 / HR MIRROR CWQ 205 / ASM AMERICA INC

01-30784-804 / VME BOARD WORKCELL TO COMPUTER MODULE / TEXAS INSTRUMENTS, INC

0050-61737-002 / WELDMENT ASSEMBLY / APPLIED MATERIALS AMAT

0020-78956 / SUPPORT PAD, MEMBRANE / APPLIED MATERIALS AMAT

294140-400 / PCB ASSY, BATTERY MONITOR,294410-200A,BATTERY CHECK / FSI

713-065829-001 / COV, SCRW, SRC LNR / LAM RESEARCH CORPORATION

ADC-12A / CIRCUIT BOARD GESADC-12A 9310 GESPCB-334 CIRELEC A 94VO 9628 / GESPAC

5020303 / FILTER, ULPA, 6 X 6 X 3, W/GSKT / PRI

1505600 / PCB ELECTRON SHOWER COMM ADAPTER / AXCELIS TECHNOLOGIES

2S700-385- / PCB WITH KEYPAD 2S070-032-1 FOR OPTISTATION 3 / NIKON

R2E220-AA44-23 / FAN IMP MTRZD 220X71MM 115VAC / EBMPAPST

0021-77186 / SPACER / APPLIED MATERIALS AMAT

772-090397-001 / REGULATOR COMPACTS 1 / LAM RESEARCH

0150-76390 / CABLE ASSY,GAS PANEL INTERCONNECT / APPLIED MATERIALS AMAT

MSM042AAA / AC SERVO MOTOR MATSUSHITA / PANASONIC

740-A16 / FREQ 47-63HZ, RELAY .5A,4.0VA 1-4A / THORNTON

17219790 / APERTURE FARADAY RESOLVER / AXCELIS TECHNOLOGIES

1106768-202 / VALVE,PNEUMATIC 3WAY VALVE,SMDV-F12M-L / FURON

XC-75CE / CAMERA - CCD BLACK-WHITE VIDEO CAMERA MODULE DC10.5-15V / SONY

36-0151 / COMPUTER CABLE INTERFACE BOARD / PROMETRIX

275905-EU / SERIES 275 MINI-CONVECTRON PRESSURE GAUGE / GRANVILLE-PHILLIPS

275905-EU / SERIES 275 MINI-CONVECTRON PRESSURE GAUGE / GRANVILLE-PHILLIPS

ST32272N / HP HARDDRIVE / SEAGATE

853-015767-001 / SWITCH,FLOW,N2 / LAM RESEARCH CORPORATION

6888001 / VARIAN ASSEMBLY MOTOR DRIVE CONTROL, HURST 6RPM PA 3202-014 / VARIAN

2957765 / MONITOR OSITION BTU 41 RH / BRUCE TECHNOLOGIES

15343461 / EH, TURBI SENSOR CUS 1 / SIEMENS

0020-96262 / PLATE SHIELD MOTING / APPLIED MATERIALS AMAT

BM25060L01 /PCB,SCARA INTERCONNECT /BROOKS AUTOMATION

XLA-40J-M9PLA / HIGH VACUUM VALVE, 10-6PA~ATM 0.4~0.7MPA / SMC

182894 / RF-2500 ROTOR FLOW / GEMS SENSORS  CONTROLS

D37245000 / ELECTRICAL SUPPLY CONTINUITY MODULE / BOC EDWARDS

0020-09029 / 5200 EXTENDED CATHODE / APPLIED MATERIALS AMAT

SC2FNNP-12 / SAFETY SNAP CAP - COM / ACC GAS

12A8E-INV / BRUSH TYPE PWM SERVO AMPLIFIER / ADVANCED MOTION CONTROLS 12A8E-INV

102461-000 / DAUGHTER CARD / MICRO CONTROL COMPANY

AC0201FR-0733R / THICK FILM RESISTORS SMD AEC-Q200(1 REEL=10,000

0200-18092 / NOZZLE, ALL CERAMIC 3.05L, HDPCVD / APPLIED MATERIALS AMAT

R4E250-AB25-23 / RADIAL BLOWER 115V 60HZ 0.65A 72W / EBM

MQMLB20H-30D / MQM-MQP-MQQ LOW FRICTION CYLINDER. / SMC

CT5015-000012-11/SENSOR,PRESSURE 225A-24596/MKS TOKYO ELECTRON TEL

REX-F9010 / RKC TEMPERATURE CONTROLLER / RKC INSTRUMENT INC

E 137632 / POWER SUPPLY,SDN 20-24-100,115-230VAC,50-60HZ,24V-20A,959443 / SOLA

3104371051 / UPPER 6" CUP / VARIAN

857-081489-702 / KIT,HTD LINES,GB,MAR JTS / LAM RESEARCH CORPORATION

81499 / CKA, POWER WINDOW DRIVER BOARD / ELECTRO SCIENTIFIC INDUSTRIES

WBL-PS5V150A / POWER SUPPLY 5V / ADVANTEST

DS1110-309640-11 / VANITY COVER FOR LINER SUPPORT RING / TOKYO ELECTRON TEL

HUL300-14 / XP POWER, 24V 12A, ENCL FAN, HMNC / XP POWER XPIQ INC.

03-138114-00 / ASSY,RF FILTER ,ILDS,RETRO / NOVELLUS

C-1500482 / PCB ANALYZER  SOURCE MAGNET SUPPLY AXCELIS / NOVA

MIP-380 /POLY STRAP TENSIONER 1/2" - 3/4" STRAP WIDTH / MID-WEST INSTRUMENTS

PGAOR20-030-01 / FILTER,POLYFLOW G 3.0UM / PARKER

0100-A1201 / PCBA LAB-200/600 ASSY BOARD / APPLIED MATERIALS AMAT

3140331B / PCB,ALARM,PROCESSOR,BTU 3140331B,3130241 / ZMISC

1610B0007 / SUCTION SLEEVE FOR TREBOR 610 610-AA / TREBOR

5064-2610 / PCB BOARD WITH MOT / MATROX

Z41411011501S / PCB BOARD / FOXLINK

SPACSCO-16 / POWER SUPPLY 100-240V / POWER ONE

VT-MODEM-5WW / ADVANCED 56K V.92 AND V.90 PHMODEM / SIXNET

ST-519 / CIRCUIT BOARD 12257 / DATEL

52-0237 / 3222B264-R2 MOTOR ENCODER, 30.5 MV/R/S PITTMAN / KLA TENCOR

90153171 / QUARTZ GAS COOLER 214 VERTRON 7410399 / HERAEUS QUARTZTECH, INC

7410399 / GAS COOLER REV A/214 VERTRON 10009204 / WONIK QUARTZ INTERNATIONAL

1380-100356-11 / ROTARY SOLENOID FOR SHUTR / TOKYO ELECTRON TEL

GLFPF6101SM6S / FILTER CTG 003U DSPSBL SS / PALL

242777-001 / PCB BOARD MODEL X079 / COMPAQ

PCI-BIB-NC-PHM / PCI BUS INTERFACE BOARD WITH SNP-DIG16-PHM / ACTIVE SILICON COM

S202-D10 / CIRCUIT BREAKER, 2-POLE, D CURVE, 10A, 6KA, 480Y 277VAC, HANDLE, /ABB

222CA-00010AA / BARATRON PRESSURE TRANSDUCER 10 TORR -15VDC 0-10VDC / MKS

SRW-65-4006/MODEL WSR65UM46-C POWER SUPPLY 100-240V 65 WATTS/INTEGRATED POWER

4177-RVU / LAPTOP / LENOVO

26-0200-186 /QUARTERLY PM SYNERGY KIT, ZWMR0015, BRUSH/LOAD/SPIN/INPUT/ ONTRAK

AF5CQ000 / PNEUMATIC, TYPE N.C., AF5CQ000 / FUJIKIN

4005184 / RICHMOND PFC PULSEFLOW CONTROLLER / SIMCO

040M5A / MANIFOLD WITH 4 A040-4E2-34W AIR VALVES ATTACHED /KOGANEI

EAUA-334700 / CONVERTER BOARD / DISCO

13288 / MINI MOTOR, 3557K024CS, HEDL5540A14, PL32S4:1 / ELRA

UG10-000839-11 / INSERT 41MM DIA SIC / TEL EPION

UG10-000838-11 / INSERT 33-6MM DIA SIC / TEL EPION

54-0124 / PCA WITH CN-116 / PROMETRIX

0072864-001 / SHAFT / DEMATIC

70312541100 / AMAT PCB MOD SYSTEM CONT 1 B / APPLIED MATERIALS

HBLM210K-GN / VEXTA BRUSHLESS DC MOTOR 2000RPM 10W W/ 2GN18K GEAR HEAD / OM

003743 / CABLE INTANDEM P4 P5 FOR ROBOT 1-0125 / BROOKS AUTOMATION

DS012-000722-1 / FUJIKIN VALVE,AIR FPR-71-9.52-2-BR (KU15495-1 / TOKYO ELECTRON

HE15-9-A / INTERNATIONAL SERIES LINEAR POWER SUPPLY 15VDC 9 AMP / POWER ONE

04-716610-01 / UPPER COLLIMATOR SHIELD / NOVELLUS

SM312F / FIBEROPTIC WITH CONNECTOR / BANNER

S202-D4 / MINIATURE CIRCUIT BREAKER - 2P - D - 4 A, 2CDS252001R0041 / ABB

MOHLRA51 / COVER,WATERPROOF,IMPROVED / DISCO

0015-01744 / SWLL POPPET VALVE 0020-28668 / APPLIED MATERIALS AMAT

MMB50U-2 / POWER SUPPLY / COSEL

SK 3322 107 / FAN AND FILTER VENTILATOR 230V 50-60V 0,12-0.11A 19-18W / RITTAL

0050-33825 / WELDMENT,TEE EX,VLV-THROTTLE,TXZ MCVD / APPLIED MATERIALS AMAT

0025044-000 / MIRROR R M1 LASER / KLA TENCOR

26-8800-014 / KIT PM QRTLY BRUSH STATION / ONTRAK