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。

LFS-52-5-44147-4 / REGULATED 5V POWER SUPPLY 1000AMP / LAMBDA ELECTRONICS

999999999 (LOT OF 8) / ESP-G-DHAB-V VESPEL DIFFUSHNG INSRT / LAM RESEARCH

0020-89916 / LINER CHAMBER EXHAUST 300MM / APPLIED MATERIALS AMAT

E15000030 / DIGITAL I/O ASSY / VARIAN

573-606356-000 / VSA100 INFICON PRESSURE SWITCH XDUCER FL-9496 399-000 / KLA

9004273 / PENDANT / BRUCE SYSTEMS

703570-081-1111-510000-25-64 / DICON 500 PID TEMPERATURE CONTROLLER / JUMO

247216-001 / PCB BOARD, SYSTEM I.O, 247216-001 / TELTEC

BM22422 / ASSY,MOTOR HXFR POWERMAXII 1.8 DEG STEP / BROOKS AUTOMATION

130NF -1314 / SINGLE OUTPUT POWER SUPPLY WITH FLOATING GROD 30 KV 500A / CPS

14843 / PCB BOARD, PSC-102 LOGIC / SEMITOOL

E2925B4 / PLASMA THERM / JOSHIBA

BTL-5-P1-M0457-R-S32 / MAGNETOSTRICTIVE POSITION SENSOR MICROPULSE / BALLUFF

0200-02980 / TOP CAP GDP AXIOM HT / APPLIED MATERIALS AMAT

0020-24804 / COVER RING, ENDURA HOT-E-CHUCK AL / APPLIED MATERIALS AMAT

0021-13298 / BASE CLAMP COOLER 200/300MM LL PRODUCER / APPLIED MATERIALS AMAT

TPS72015YZUR (,000) /IC REG LINEAR 1.5V 350MA 5DSBGA (TAPE  REEL) /TI

435465-9020-000 / MEASURING STAGE S 150X100 MOT CAN D 90-27-602-0000 / ZEISS

XCA-00-20-195-70-FL276234 / 0522 / CKD CORPORATION

262445 / GATE SPARE ISO 160 / VAT

00-010-3815 / PCB, SPI SO LOGIC BOARD TRI-TEMP SYSTEM / SPI

SEC-4400M (AR) (1000SCCM)/MASS FLOW CONTROL MFC 1 SLM 281606439 / HORIBA STEC

9251404 / PRESSURE INDUCER DATA INSTRUMENTS 0-500PSI 5VIN .5-4.5VOUT / ECLIPSE

2980-090339-11/ PRA X BOARD,TKB2220 2981-600409-11 /TOKYO ELECTRON TEL

A3874-9215NED /MOTOR VEXTA 5-PH 0.72 STEP DC 1.4A 2.2 OHM ALPHA8 /ORIENTAL MOTOR

810-000503-003 / PCB RF MATCH CONTROL ( STYLE 590) INTERFACE / LAM RESEARCH

435700-9101-000 / CL 6000 LED A-1160 VIENNA / ZEISS

 / ASML

3D81-000020-15 /PCB BOARD TOKOYO ELECTRON TYB514-1-1048 E679203DO8-SYS-12 /TOKYO

DS012-004643-1 / VALVE VALVE VACUUM 93-138 / TOKYO ELECTRON TEL

GST-03L / ULVAC GST-03L ULVION PUMP CONTROLLER / ULVAC

16337-01 / COLLAR, QUARTZ, REV F 1.25 INCH HOLE / NOVELLUS

4C711A / AC SQUIRREL CAGE BLOWER / GRAINGER

1462-0146E / STC 115 BUBBLER / SCHUMACHER

121S0002-01() / RING RTNR WINDOW 270-80 VAD M045 / SEMITOOL

1789830 (LOT OF 10) / GRAPHITE REPELLER PLATE / AXCELIS TECHNOLOGIES

879-0362-002 ASML CHUCK, QML/MSXLOD

BG4-6511 / CANON I3 3RD CONDENSER LENS / CANON

BGR-026905X02 / ADVANTEST PCB ASSY, DAUGHTER BOARDS BGC-026352 / ADVANTEST

0240-20300 / KIT PNEU PER MFC OR FINAL 2 GAS, 0090-20042 / APPLIED MATS. AMAT

0200-00317 / ISOLATOR PUMPING RING BOTTOM 200MM PRODU / APPLIED MATERIALS AMAT

FRP-169 / BOARD, PC (SHINKAWA) / SHINKAWA

FRP-217 / BOARD, PC (SHINKAWA) / SHINKAWA

CT1985-428526-11 / G BOTTLE CAP (SL) / TOKYO ELECTRON TEL

0021-20718 / PEDESTAL COVER LOWER / APPLIED MATERIALS AMAT

DS2187-094232-11 /FLAME EYE /TOKYO ELECTRON TEL

0021-18725 / BLOCKER, LOW K, GAS  MOTED, 300MM P /APPLIED MATERIALS AMAT

0020-25920 / AMAT SHIELD LOWER 8 INCH G12 / APPLIED MATERIALS

000276 / SPECTROMETER PMT ASSEMBLY / ULTRAPOINTE

E11003080 / PFEIFFER TCP121 TURBOMOLECULAR PUMP CONTROLLER,PMC01475A / VARIAN

YDA62011-B / SACC LM GUIDE AND BEARING CART 3318-001326/ TOKYO ELECTRON TEL

0010-70827 / ASSY VLV 2.0 BORE 3.0 STRK 145PSI ETCH PED LIFT CYLINDER AMAT / SMC

OFAST BUS STOP 8-PORT JCTION  / TURCK

15-2797 () /BELT-TIMING /NOVELLUS

20560 /SCHOTT ACE 1 LIGHT SOURCE LR92240 /SCHOTT FOSTEC

102798-000 / PCB BD, WRP-256 DRVR DECODE BUFFER DAUGHTER / MICRO CONT. COMPANY

XI120PC-XL / EXFO X-CITE SERIES 120PC / EXFO

SS-24-24STRM-XX-Z / MANUAL BALL VALVE DN40-1 1/2" PN64-1000 1.4408-CF8M / EVANS

SS-24-24STRM-PP-Z / VALVE DN40-1.5" PN 64-1000 1.4408CF8M / EVANS

9407-0042 / PCB KEYBOARD ASSY, KEYTRONIC A65-01740-001 PCB-002P / NANOMETRICS

TMP 50 / LEYBOLD VACUUM TURBOVAC 150V AC 0.3A 1200HZ 800150V0010 / OERLIKON

TOB1106 / BOARD IO MTR #04 MPC-T0070A-14 / TOKYO ELECTRON TEL

0040-02938 /GAS MANIFOLD OUTPUT 200MM TXZ CIP /APPLIED MATERIALS AMAT

3CC1-959-2300 / CDG045D ICDG LI9496 BLAZERS 13.3 10TORR / INFICON

0021-11486 / DISK, SHUTTER SNNF, BESC 300MM / APPLIED MATERIALS AMAT

810-17058-002 / PCB ASSY BACKPLANE / LAM RESEARCH CORPORATION

Y14204000 / TEMPERATURE MANAGEMENT SYSTEM / EDWARDS

102805-000 / PCB BD, DRV. BLOCK SLCT. DECODE DAUGHTER , 102804-000 / MICRO CTRL.

140-101-00000 / MODEL 140XIIII INDUSTRIAL THERMAL LABEL PRINTER / ZEBRA

A-83439-2 / LOW LEVEL INTERFACE PCB KB-KILI REV 2 / NOVELLUS

4S018-710 / LIB-I/F P.C.B. / NIKON

424907-0000-000 / 6-POSITION REFLECTOR TURRET MOT. / ZEISS

0150-00099 / SYSTEMS I-O INTERCONN. COTERCABLE / APPLIED MATERIALS AMAT

1004084-01 / PCB BOARD, E84, DUAL AD SPINLOAD INTERFACE / ASYST TECHNOLOGIES

0020-31801 / GAS DIST PLATE,119 HOLES .156 THICK / APPLIED MATERIALS AMAT

VEEF0901 / CKA ,V-COM 8 / SBE

301-08280 / LENS, 100MM RODENSTOCK / AB LASERS

0020-10936 / AMAT 8 INCH BLOCKER PERF. PLATE, SILANE 200MM / APPLIED MATERIALS

SP2001 / 2000G SCOUT PRO DIGITAL SCALE 110V / OHAUS

2100844 / SERVO MOTOR, M-2348-103 / TEKNIC, INC

1270-01041 / SW TEMPERATURE CONTROL 50-350 DEG F A / BURLING INSTRUMENTS INC

170-0027-05 / PCM-SX -2801E 400 0249 0001 / WINSYSTEMS

0200-36399 / SHIELD,TOP,CERAMIC,,TXZ 300MM CVD / APPLIED MATERIALS AMAT

990-004552-003 / CARD CAGE / PNEUTRONICS

UG10-00-11 / SHIELD LEFT GUIDE ROD / TEL EPION

UG10-002008-11 / SHIELD LOWER PULLEY / TEL EPION INC

170B / ION LASER POWER SUPPLY MODULE / OMNICHROME LASER

E15001000 / DIGITAL IO PCB / VARIAN

PSK-090/PRECISION MODULE LINEAR BALLSCREW R146540000 640.0MM BOSCH GROUP/REXROTH

28-8875-014 / PC ASSY, QUAD MICRO,STPR.PR. / ONTRAK

626C13TBE / TRANSDUCER ABSOLUTE PRESSURE 1000 TORR / MKS

804-972-00 / BOARD KINEMATIC COUPLER, 804-972-00 / TERADYNE

DLP180-24-1 / POWER SUPPLY 100-240VAC 2.7A / TDK-LAMBDA

20704A / MKS PROCESS SENSE ENDPOINT DETECTOR-REPAIR / MKS

4630-1051 / MKS MAIN VALVE HEATER / MKS

IMAGRAPH / PCI-VIDEOMIXER, 760058 / GROHMANN

0021-09914 / PLATE, BLOCKER, DXZ SACVD, CENTURA / APPLIED MATERIALS AMAT

10025226 / PRE-ALIGNER CHUCK, 100-200 MM, WAFER / EVG-EV GROUP

840L-RFQ-3983 / DIGITAL MFC 10000SCCM GAS HCL 1/4" VCO SLPM / SIERRA INSTRUMENTS

UG10-001199-11 / SHIELD CHAMBER O / TEL EPION INC

839-032633-002 / ASSY TC J-TYPE TEMP ESC MARCHI S-0961-02 / LAM RESEARCH

879-780-00 /PCB, ARBITARY WAVE GEN (AWG) AD780 REV D/ TERADYNE

797-092055-204 / MASS FLOW CONTROLLER STEC 4400 O2 20 SCCM    / LAM

EBX(I)75-Z/ POWER SUPPLY INPUT100-240VAC 130VA 50-60HZ/ LEISTGSELEKTRONIKJENA

BGR-026907 / ADVANTEST PCB, TEST BOARD FOR ADVANTEST T5771ES / ADVANTEST

748435-001 / HP600GB HOT PLUG DISK 0B31342 748386-001 / HP (HEWLETT-PACKARD)

5KH32GNB784AX / HP AC MOTOR / MARATHON ELECTRIC

0100-99011 / GAS INTERLOCK / APPLIED MATERIALS AMAT

7-020-0353 / BALL ELECTRONICS SYSTEMS TVX90 SERIES CRT MONITOR / DOTRONIX

C0094-0860-01 /CCFM FAN FILTER CONTROLS /ASYST TECHNOLOGIES

910089 / PROTEUS 910089 FLOW SWITCH 0.40GPM / PROTEUS INDUSTRIES INC.

565-0480 () / SLIDE SLIDER (4) / HITACHI

04-716643-01 /HEATER SUPPORT SHIELD /NOVELLUS

0471664301 /HEATER SUPPORT SHIELD /VARIAN

0021-19060 / CUP OUTER FEEDTHRU SUPPORT MONOLITHIC / APPLIED MATERIALS AMAT

0150-00162 / CRYO AC INTERCONNECT / APPLIED MATERIALS AMAT

0041-47915 / UPPER AC DIST FULL SYMETRICAL 4 Z/ APPLIED MATERIALS AMAT

2181-020009-1E / PCB ASSY STC-C / TOKYO ELECTRON TEL

471-14077-000 / ZM1510 HSPMI-STRAIGHT-THRU 740-12848-000 ZYGO OPTIC 8450 / KLA

KD2300-.5SU () /KAMAN MEASURING SYSTEMS OSCILLATOR DEMODULATOR/KAMAN IND

BH8-2317-01 /PCB CANON BG3-3122, STG-BB-EX5-PCB, BH8-2317-01 /CANON

AD07N / VALVE,3WAY,NW40,HITEMP,KALREZ8900,SCS14A-25A,C-2250-006-3600 / HISAKA

3161951V03() / SYSTEM MICROCONTROLLER ASSEMBLY PCB BOARD / BRUCE IND.

OTHERM

SS-40-40STRM-PP-Z / PL SERIES TUBE EXTENSION VALVE 2" 1000WOG CF8M / EVANS

NP8134R201 / BOARD CONN BLT L PCB / TAIYO YUDEN

716-028447-002 / DISK CERAMIC / LAM RESEARCH

253A-13782 / THROTTLE VALVE / MKS

0021-07586 / RING, MIDDLE PURGE SST, 300MM TXZ / APPLIED MATERIALS AMAT

UMPLANFL 50X0.80 / BD INFINITY METALLURGICAL MICRO. OBJECTIVE / OLYMPUS AMERICA

0050-86833 / LINE OVERPRESSURE CH B / APPLIED MATERIALS AMAT