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。

0190-23498 /TURBO INSOLATION VALVE FEOL AG LI-9496 BALZERS /INFICON

810-073479-005 /JET STREAM GAS  MB MAIN BOARD 710-073479-005 /LAM RESEARCH CO

0040-05242 / BULKHEAD, 300MM J-, IGUS / APPLIED MATERIALS AMAT

15-344259-00 / RING,CARRIER,300MM,A479Q,C3VCTR / LAM RESEARCH

96151217 / PCB, APG,ALG,PTRN,GEN,DEFT / SCHLUMBERGER

0020-04167 / CYLINDER, CLAMPING 200 MM / APPLIED MATERIALS AMAT

0040-98357 / MANIFOLD / APPLIED MATERIALS AMAT

QM00-4763-B / COMPACT AUTOMATION MUTLI-POS. AIR CYLINDER WITH BELLOWS / COMPACT

W-18V7VDM7V2B / POWER SUPPLY MODULE ASSY, MT400-18, MT400-7 / ADVANTEST

B90-0029 / FT DIAGNOSTICS FACILITIES DRIVERS SENSORS 52-0023 DCA-LM44-0023

51221162 / VACUUM OVEN, 120V, 500W, 4.2AMP, 50-60HZ, 35C TO 200C / PRECISION

3CR6M /PUMP TURBINE CLOSE COUPLED 60 HZ SINGL PH 3450/2850 RPM .333HP / BURKS

CA-1568M / 15'' VGA METAL SERIES COLOR MONITOR / FAIR ELECTRONICS CO

1526850 / PCB, ASSY CVA SATELLITE, 1426850 / AXCELIS TECHNOLOGIES

04CAA001 / PCB, 04CCA001 / SEMITOOL

204-00007-00 / PCB FRAME GRABBER CARD R B1/N2899 / IMAGING TECHNOLOGY INC.

40591 / PFA HEAT SHRINK FOR ROBOT 2IN X 4FT ROLLCOVER / PARKER

DS2187-332120-11 / 45HEATER,80A- #2187-332120-11 /TOKYO ELECTRON TEL

0100-90227 / PWB ION GAUGE / APPLIED MATERIALS AMAT

16889-01 / SERVO LIFT ASSEMBLY BOARD PCB / SEMITOOL

950-987-C3 / PCB J973 VMO MOD 256K IM FMM DCM / TERADYNE

950-987-03 / PCB J973 VMO MOD 256K 1M FMM DCM / TERADYNE

03-376889-00 / CBL ASSY AC INPUT 14AWG HF GEN PARA / LAM RESEARCH CORPORATION

Z812C / ACTUATOR ENCODER 5V MOTOR UE25CC DC MOTOR 48VDC 1A / PORT

35F8326 / CYLINDER, TS 14.97 12.20 10.50 AE / IBM

E15000151 / PCB E S PROTEUS / VARIAN

47900058 / ROBOT END EFFECTOR ASSEMBLY / STEAG ELECTRONIC SYSTEMS, INC

PM-097.5-S BIMBA / PM-097.5-S, ACTUATOR FOR LTE / BIMBA

LF-A30M-A-EVD / LIQUID MASS FLOW METER .2G/MIN / HORIBA

3.30-219.200:08 / TUBE - CERAMIC INNER / GTI TECHNOLOGY

4S018-716AN / OPDCTRL3 PCB / NIKON

0100-00062 / AMAT PCB ASSY, WPWB VME STEPPER DRIVE CONT / APPLIED MATERIALS

XI120-QX /X-CITE SERIES 120Q FLUORESCENCE ILLUMINATOR / EXCELITAS

A21141-A / ASSY. SL CARD CAGE I/O CARD / RUDOLPH TECHNOLOGIES

0100-77003 / PCB-ASSY CMP DET BD / APPLIED MATERIALS AMAT

TE10A / THYRISTOR POWER CONTROLLER / EUROTHERM

0021-22419 / BLADE, 8 TRANSFER, HP, CVD COMPATIBLE / APPLIED MATERIALS AMAT

H33NRHB / MOTOR-IFEL / PACIFIC SCIENTIFIC

97861135 /PCB IFA2 BOARD ARTWORK 40861135 /SCHLUMBERGER

BTL5-A11-M0280-R-KA05 / MICROPULSE LINEAR TRANSDUCER 11 INCH ASSY / BALLUFF

90177895 / VHP BOILER BEAD / HERAEUS QUARTZTECH

0785-0087-0003 / IN-VAC PROFILER CABLE ASSY, 200MM 8250 / AXCELIS TECHNOLOGIES

15001891 / PCB ASSY REGEN LOGIC 15001890 / VARIAN

716-250921-001 / INSULATOR-UPPER ELECTD 200MM / LAM RESEARCH CORPORATION

0200-02823 / INSULATOR, CERAMIC, COMMON BD-BLOK LOWK / APPLIED MATERIALS AMAT

H7269001(LOT OF 11) / GRAPHITE LENS APERTURE / RINGSDORFF

122A-11062 / PRESSURE TRANSDUCER 10 TORR TYPE 122A / MKS

141A-14319 / PRESSURE TRANSDUCER, MANOMETER RANGE 100 TORR-G,  24VDC / MKS

0021-34086 / RING COVER SST CU COIL 300MM / APPLIED MATERIALS AMAT

0020-99648 / RING RETAINING BEAMSTOP / APPLIED MATERIALS AMAT

3D80-000006-V1 V-TEX ROLLCAM PNEUMATIC SLIT VALVE / TOKYO ELECTRON TEL

4500491 / PADDLE WITH 3 RODS /METRON

897-933-20 / PCB DSIG M/F BOARD / TERADYNE

950-678-02 / PCB, ADDR/CLK/PE/CRD 950-748-00 / TERADYNE

715-066095-001 / ELCTD, EXTENDED, BEVEL, Y203 / LAM RESEARCH CORPORATION

716-065573-004 / RING,PEZ,LWR,Y203,296.50MM / LAM RESEARCH CORPORATION

ABF 71 2E-7R/CENTRIFUGAL PUMP-ATB 0.75KW-35 LPM-TEMOTEK CHILLER 007-22/ATB-MOTOR

6-39-06738 / HEAT EXCHANGER RX-710 / KOMATSU

0020-30846 / PEDESTAL POLY/WSI 150MM PLEASE USE 0020- / APPLIED MATERIALS AMAT

0021-21065-003 / AL SHIELD 300MM PRECLEAN SCREWLESS / APPLIED MATERIALS AMAT

21-250 / GAS LEAK DETECTOR MODEL 8017 GOW-MAC INSTRUMENT 21-250 / MATHESON

U20000617 / INTERFACE MODULE, NOVELLUS SEQUEL, TIM FLASH 3 / BOC EDWARDS

11-020-603-802-012 / MOTOR-PORT LOCK ASSY / LEICA MICROSYSTEMS

0050-50597 / TUBE, LINE, 1-8 INCH TEPO LINE POS 1 / APPLIED MATERIALS AMAT

141AA-01000BA / 141A BARATRON ABSOLUTE AMBIENT VACUUM SWITCH 1000 TORR / MKS

4022.634.44801 / POWER SUPPLY LISAF 3P / ASML

LVC-414 / LIQUID VAPOR CONTROLLER / QUALIFLOW STI

CTFV01TPEPW()/ FLUOROGARD AT PREWET 0.1UM 10" C-0 TEFLON ENCAP VITON ORI

435425-9100-000 / MICROSCOPE STAND / ZEISS

1482-2186 / VALVE-HEATED / SCHUMACHER

U20000618 / INTERFACE MODULE, NOVELLUS DLCM, TIM FLASH 3 / BOC EDWARDS

126-1438-69F04 / MOD E99-211N W-A196-01 /ENTEGRIS

0200-15205 /LINER CERAMIC BOTTOM SACVD PRODUCER 300MM /APPLIED MATERIALS

27-00066-00 / POWER SUPPLY 24V(50-000002-00D) RO ASSOCIATES PS551 E / NOVELLUS

17175190 / ADAPTER RING DISK FARADAY / AXCELIS 17175190 EATON 17175190

16-029875-00/15-029856-00 / EVAPORATOR BODY, CVD TIN / NOVELLUS

0200-06073 / RING DEPOSITION CU COIL EXTENDED TRENCH DESC 300MM / AMAT

127AA-00100E / BARATRON PRESSURE TRANSDUCER TYPE 127 / MKS

0021-98736 / COVER SHIELD CHAMBER ECHAUST POCKET METAL ALD 300MM / AMAT

3870-01352 / VALVE H VAC RTANG 1-1-2IN CONFLAT 2-3-4 FLNG / APPLIED MATERIALS

E17011570 / SPOOL / VARIAN

2L05-250034-11 / RING, SHIELD TOP-HS(PH-TU)V2 / TOKYO ELECTRON TEL

0010-00750 / AMAT BOLT DOWN COVER ASSEMBLY / APPLIED MATERIALS

A-14874 / PCB 332 CONTROLLER PCA METAPULSE A-14873 / RUDOLPH TECHNOLOGY

0020-24959 / SHIELD, BOWL AL / APPLIED MATERIALS AMAT

975784-001 / PC BOARD SW PANEL / WATKINS JOHNSON WJ

AT-GS950 16 / WEBSMART SWITCH 16 PORT GIGABIT 2SFP COMBO PORTS / ALLIED TELESIS

ML1 240-10-70 / GAS MANIFOLD ASSEMBLY / AIR LIQUIDE ELECTRONICS US LP

507008615 / AC/DC POWER SUPPLY FOR RF GENERATOR / TEGAL

FTI-2301D T1-D3R/TMP POWER IT200-240V 50-60HZ 1.3K VA 3280-000025-V1/SHIMADZU

SER.456.40141 / 8 INCH WAFER TABLE CC NOTCH SISIC / ASML

00-681487-00 / VARIAN 00-681487-00 KOOLTRONIC KDP529-101 A /KOOLTRONIC

F698112000(LOT OF 6) / FILTER CARTIRIDGE / GRAVER TECHNOLOGIES

PIP-512B / VIDEO DIGITIZER PCB / MATROX

PA0002A / PCB, MOTOR CN, I/O DISTRIBUTOR / TOKYO SEIMITSU

02-034310-00 / NOVELLUS ASSY, MODULE CONTROLLER P100 / NOVELLUS SYSTEMS INC

0100-40875 / PCB SUPPRESSION LOGIC 0120-91414 0120-91415 / APPLIED MATERIALS AMA

625A-14375 / BARATRON PRESSURE TRANSDUCER 10TORR RT ANG KF16 / MKS

0150-09924 /CABLE ASSY, DISTRIBUTION, 5000 MK II-XT /APPLIED MATERIALS AMAT

E15005870 / ANALYZER MAGNET POLARITY SWITCH INTERLOCK PCB ASSY / VARIAN

716-080139-012 / RING EDGE BOTTOM WRAP REV D / LAM RESEARCH CORPORATION

716-080139-032 / RING EDGE BOTTOM WRAP REV A / LAM RESEARCH CORPORATION

9820052-05 / PCB VME ETHERNET CELL CONTROLLER E1 9850019-03 / MICRODYNE

MAX2000, 9988133, 10-2030-01 / CONTROL SERVO 3 AXIS AGILE 30117 / ANALOG DEVICES

12044-PA44-0003 F12-60436 / GATE VALVE VACUUM GATE VALVE / VAT

WWS550 / CORDLESS BARCODE SCANNER / WASP

342-0908-0001 / PCB ASSEMBLY SOURCE TERM DATA LINK NV4200 NV6200 / AXCELIS TECH

4G-500-6-NA CREST TRU-SWEEP GENESIS ULTRASONIC GENERATOR 120V 8 AMP 60HZ 1PH

ES3D10-351122-11 / BASE, BTM-L P-TRAP L EXH SP / TOKYO ELECTRON TEL

0010-13445 / MONITOR(STAND-ALONE) / APPLIED MATERIALS AMAT

1036641 / PCB MINI COM K-524 / ULVAC TECH

MDS1106-TW01 / TFT LCD THROUGH THE WALL MONITOR / SEMICAT

H1P2SLSM / UPRIGHT STAND / PRIOR

910402-001 / TC 486 INPUT CARD / WATKINS JOHNSON WJ

1482-2187 / LINE-HEATED / SCHUMACHER

2-39-39335 / AC SERVO MOTOR TAMAGAWA SEIKI TS3510N34E13 / DNS DAI NIPPON SCREEN

709544, 716991 /NSX-105 AX1 POWER DISTRIBUTION BRD/AUGUST TECHNOLOGY NOW RUDOLPH

230312V02 / LEYBOLD CTR, CERAVAC, 230312V02 / LEYBOLD

716-040737-431 / R,CPLG,QTZ,BIAS PU,W-O FL,300MM / LAM RESEARCH

BMR-021209X04 / 16M PC PIN BLF-022388 PCB / ADVANTEST

192140 / SCHUMACHER POWER SUPPLY, VG6001 PSU, 100-240VAC VERSUM

XI120-Q / X-CITE SERIES 120Q FLUORESCENCE ILLUMINATOR / LUMEN DYNAMICS

AB1F0023EH12K3 / FILTER-WETTED 0.2M SUPER CHEMINERT / PALL TRINCOR

88004820-1 / CARTRIDGE DRIVE 20MB, 88004820-1 / IBM CORP

ABLM-133-1 / R PIN LIFT ASSY CHAMBER 662000-1004 / MDC VACUUM PRODUCT

716-080138-035-A / QUARTZ RING, EDGE, TOP, WRAP / LAM RESEARCH CORPORATION

716-080138-015-E / QUARTZ RING EDGE TOP WRAP / LAM RESEARCH CORPORATION

716-080138-034-A / QUARTZ RING EDGE TOP WRAP / LAM RESEARCH CORPORATION

0190-02557 / HEATER JACKET, LOWER VALVE ELMNT, TXZ CH / APPLIED MATERIALS AMAT

91-01749A / THERMALLY CONTROLLED FIRE POLISHED QTZ,91-01749A / WEST COAST QUARTZ

716-11623-001 / RING CLAMP LOWER ELECTRODE REV / LAM RESEARCH CORPORATION