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。

 MOYNO SSM001 CONNECTING ROD F0625S PART # 3303635015

  WATLOW DIN-A-MITE TEMPERATURE CONTROLLER 600V 15A @ 50°C DB3C-1560-K200

 FAFNIR 1111KRRB BRG  COL BEARING WITH LOCK COLLAR

  STANDARD SAFETY SIZE 2XL FLB BIB OVERALL 074-4405-0005

 IBM MOTHERBOARD FRU93H9700 W/ PENTIUM II PROCESSOR 80522PX300512EC  MEMORY

 CARLISLE R3VX1060-3 WEDGE-BAND COG BAND BELT

DM S CARLISLE R3VX1060-3 WEDGE-BAND COG BAND BELT

 SCHLAGE AL53BD SAT 605 ENTRANCE LOCK 1-3/8"-1-7/8" 2-3/4" BRACKET  LATCH

 FAFNIR MUA 2-7/16 BEARING

ARUBA NETWORKS 7030 WIRELESS LAN MOBILITY CONTROLLER ARCN7030 ARCN7030-US

 AQUALITE THINLINE LCD KEYPAD 7000 SERIES SECURITY ALARM

1DM SPARKER 2ET2-316 1/8" ION TEE A-LOK 316 STAINLESS 1/8" LOT OF 12

GENERAL ELECTRIC SIZE 4 MOTOR STARTER CONTACT KIT 3 POLE 55-153678G002

LUTRON NT-1503P-BR INCANDESCENT DIMMER 120VAC BROWN

BR AUTOMATION 7DM465.7 Rev. L0 DIGITAL MODULE

 AUBURN SI-187 IGNITER SHIELED ELECTRODE

VERSA-MATIC V183BN-1 BA TWIN DIAPHRAGM SET 8" O.D 8 HOLE

HONEYWELL CONTROLLER 120 VAC DC3001-0-00A-2-00-0111 MOTING CLIPS  COVER

�� STAINLESS STEEL BRAIDED FLEXHOSE 63" X 3/4" CAM LOCK ENDS 3/4 D 316SS

  SEALMASTER NPMH-23 2 BOLT PILLOW BEARING 7/16" BORE

  PARKER PNEUMATIC FILTER MAX INLET 250 PSIG 08F54AC

 DHAM BLNK SPINDLE MOT ADAPTER FOR 5C CLOSERS MB244-G

HIRATA TEACH PENDANT H-3332 NO KEYS

ARC MICROSIEMENS/CM CONDUCTIVITY METER 0-5000 HIGH 0-2500 LOW 2-AR-4

 DM S  BECK 1" BLACK OXIDE WELDED STEEL NIPPLE ASSORTMENT 0334902103

 MAXITROL 210D 1" GAS PRESSURE REGULATOR 10 PSI MAX 0102-4

 FAFNIR 2 BOLT FLANGE MOTED BEARING RCJTC1 11/16"

  YAMADA DIAPHRAGM PUMP 780147 OUTTER CHAMBER 40PP

CUTLER HAMMER SIZE 2 MOTOR STARTER 50A 25 HP 3-4 POLES 120V COIL 9586H6281G

  WIKA 4-1/2"  6" SOLID FRONT LIQUID FILLED PROCESS GAUGE 200 PSI 2XX.34

DICKSON TH6P2 6" Remote Sensing Temperature Humidity Recorder  it

COMPTON 239-301A 239-301A-RXRX-AC-S1 0-300 ACV 1 RELAY SET POINT

WESCHLER INST. 239-304A 239-304A-RXRX-AC RS 0-300 ACV 2 RELAY SET POINTS

ARO 637140-A4 DIAPHRAGM PUMP REPAIR KIT MIXED  PARTS

SHARP 12/24VDC INPUT MODULE ZW-32N2T

  OILGEAR 3/4" PRESSURE RELIEF VALVE HSAD800/CM1-10-C

REPAIRED REFURB TAYLOR 1" RELIEF VALVE 82E7351311 T-8200-1 660 PSIG 2400 SCFM

 OMEGA SUPERECORDER 2 CHANNEL CIRCULAR CHART RECORDER CTXL-TRH-W -

 BARNES BRASS BALL VALVE 2" NPT 150 LB 600 WOG

GC VALVES S211GH02T1HJ5 2 WAY, 150 PSI STEAM, 120VAC COIL 1-1/2" NPT

 MRC 408MFF DEEP GROOVE BALL BEARING

 VSP TORQ-KIT PIPE STAINLESS FLANGE ASSEMBLY KIT NPS 2" 300# PITA

MARTIN 2 GROOVE PULLEY SHEAVE 2 B 54 SDS 5.75" O.D SDS BUSHING 5.4" PITCH

 DICKSON DATA TREND 6" DIGITAL TEMPERATURE  HUMIDITY CHART RECORDER TH602

 PENNWALT WALLACE  TIERNAN 8-1/2" 1500 HI PERFORMANCE GAUGE LINE 62A-2A-0020C

  LINCOLN ELECTRIC PC BOARD M-13630

WHITNEY REN 50-2 RIV ROLLER CHAIN 5' 8" FEET 96 LINK 5/8" PITCH NNB

  ALLEN BRADLEY NEMA SIZE 00 MOTOR STARTER 24V COIL 600V 2 HP 3Ø 509-TOJ

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143-145TC 3AM050B14 ELECTRIC BRAKE 50V 1,000 RPM

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 VIDEOJET SP207016 A PUMP DIAPHRAGM O-RING

ALLEN BRADLEY 1761-L16BBB MICROLOGIX 1000 SERIES E 24VDC

 ANDOVER CONTROLS CONTINUUM xPDO4 EXPANSION MODULE 24VAC/30VDC OUT 24VDC IN

 ELECTRONICS CORPORATION FIBER OPTIC ADAPTOR  REFLECTIVE SCANNER 60-1850-1

 DODGE 2 BOLT FLANGE MOT BEARING 46mm BORE 124280

WILKERSON MTP-95-559 COALESCING FILTER ELEMENT 0.01 MICRON

 CUTLER HAMMER C400KR1 FORWARD STOP REVERSE COVER CONTROL KIT REV. STARTERS

  MURR ELEKTRONIK 24 VDC STACK LIGHT 1 AMBER LED LIGHT 4000-75070-1100003

DM S KITS  GE SPACE HEATER KIT FOR SIZE 0  1 50W 600V CR305Z701C 305X701C

 10 VA MODULE FOR POWER METER DSP3-115A

FSC FS-TSDI-1624C INDUSTRIAL CONTROL F PC BOARD

KEP ELECTRONIC DPM BC4DX DIGITAL PANEL METER 120VAC WITH H DOWNS

  S HYDRAULICS CHECK VALVE DOHSXHV

  3M BREATHING TUBE ASSEMBLY 526-01-10R01

 SPIRAX SARCO 0628085 FLOAT SUB ASSEMBLY 1 1/2" - 2"

 FIREYE WIRING BASE CLOSED FRAME 60-1386-2

DM S FIREYE WIRING BASE CLOSED FRAME 60-1386-2

SIEMENS COM FIRE AND BURG ALARM MODULE CARD ZIC-8B / 575-050569 REV "4"

 SEALMASTER G 1-1/8" BALL INSERT BEARING ER-18TC

 SEALMASTER G 1-7/16" BALL INSERT BEARING 2-17T

  VERSA 0-75 PSI 3-WAY SELECTOR SOLENOID VALVE ESM-8302-66-G5R-H-WE-3-A120

 MP FILTRI CSG-100-A25A BETA 25=1000 ELEMENT REPLACEMENT

SIEMENS FIRE ALARM SUBASSEMBLY CARD ZAC40 / 3L69

 YOKOGAWA 75 AC AMPERES AMP METER 75 AC AMMETER 103-131-LS-PB7 103131LSPB7

 SQUARE D SIZE 0 MOTOR STARTER 600 VAC 480 COIL VAC 5 HP 8536SBG2

  SQUARE D SIZE 0 MOTOR STARTER 600 VAC 480 COIL VAC 5 HP 8536SBG2

LTI CORP 4 FT HEATED GLUE HOSE ASSEMBLY 150 WATTS 240 VAC 106B202 / 9207-15

 JAYCO 1" FNPT RELIEF VALVE 15 PSI CAPACITY 68 SCFM

EMS VS MINI VARIABLE SPEED DRIVE 3 PHASE 0-460 VAC 3.4 AMP CIMR-XCBU40P7

GE GENERAL ELECTRIC SIZE 1 MOTOR STARTER 27AMP 600 VAC 120V COIL CR306C0**ACDT

 SQUARE D SIZE 0 MOTOR STARTER 120 VAC COIL 600 VAC 3 HP 8536SBG2CS

 REBUILT HARRIS COMPRESSED GAS REGULATOR 25-100C

 SEALMASTER 1-7/16" 4-BOLT FLANGE MOT BALL BEARING SF-23T

  DIXON 3/4" REGULATOR 0-125 PSIG R28-06R

 DM S  LEVITON 20 AMP SINGLE LOCK RECEPTACLE 2 POLE 3 WIRE 250 VAC 2320

DAYTRONIC 3560 DC PANEL VOLTAGE METER 90-265VAC 50-400HZ 10W WITH POWER CORD

  STANDARD POWER ACME POWER SUPPLY 115/230 VAC 24/28 VDC 1.8A SPS 40-24/28

 GARRETT COM MAGNUM 8-PORT WORKGROUP HUB 10 MB/S MODEL 1008

 ASHCROFT DURAGAUGE 0-400 PSI 1/4" MONEL TUBE SKT 45-1279-PSL-04L-400# - FLAW

 EATON CUTLER HAMMER 12" DOM FLASHGARD BLANK MCC DOOR 15 1/2" WIDE

OMRON S82J-6024 POWER SUPPLY INPUT 200-240VAC OUTPUT 24VDC 4.5 AMPS

DM SOMRON S82J-6024 POWER SUPPLY INPUT 200-240VAC OUTPUT 24VDC 4.5 AMPS

DM S3M POLYPROPYLENE TYPE 1 FILTER FINE PARTICLES 78-6969-6211-3,

WIEGMANN DIGITAL PANEL METER INPUT 20 VDC POWER SUPPLY 120 VAC B060604CHWW

THERMOWELD CC-2 M-241 EXOTHERMIC M R 4/0 STR TAP 4/0 STR CART 150 Q370

 GENERAL PURPOSE COMPRESSED GAS REGULATOR 3000 PSIG GPT270D

 MARTIN 5B38SD PULLY SHEEVE 5 GROOVE PULLY

 WHITNEY REN 50 RIV ROLLER CHAIN 10 FT 192 LINKS 5/8" PITCH ANSI

 LUBESITE AUTOMATIC LUBRICATED GREASE FEEDER 2 OZ CAPACITY 205

Coupler Cam Groove Fitting Flange Cam Arms 2" -2-1/2" Coupler PF20C 316SS

  GE GENERAL ELECTRIC SECURITY WIRELESS MASTER CLOCK GPS KIT GE-MC-020

DM SHEWLETT PACKARD HP 81 BLACK DYE 680ml INK CARTRIDGE C4930A C5066A  3

GRAIN CUTTER CRAIN 975 POWER GROOVER

 DM S  EDWARDS EST REMOTE LED ALARM INDICATOR SIGA-LED LOT OF 9

  REXNORD LINK BELT RC50 RIV ROLLER CHAIN 10 FT 192 PITCH R50R10BX

 INTERMATIC SEVEN DAY DIAL TIME SWITCH 4 POLE SINGLE THROW T7401B

  INTERMATIC SEVEN DAY DIAL TIME SWITCH 4 POLE SINGLE THROW T7401B

 DAYTON AIR FILTER REGULATOR 150 PSIG INLET/OUTLET 125ºF 3/8" NPT 4ZK89

ORIENTAL MOTOR 51K40RGK-AA SPEED CONTROL MOTOR OUTPUT 40W 115VAC 4P

 GIACOMINI 2½ FIRE HOSE VALVE 618R

 INTERMATIC SEVEN DAY DIAL TIME SWITCH 40 AMP 120/480 VAC 4 POLE T7801B

 ListingDUAL LITE EXIT SIGN METROPOLITAN NSRB W/ EMERGECY POWER PACK 4V393

  PT INTERNATIONAL PILLOW BLOCK BEARING 60MM SWG212-60UMM

 ADVANCE CORE  COIL BALLAST KIT 1-250W M-58 METAL HALIDE 71A5771-001

 SCHLAGE EMERGENCY BREAK GLASS W/ ALARM 12/24 VDC MODEL 742

 SIEMENS ISOLATED ANALOG OUTPUT MODULE 2560

 21)  FIBRE-METAL HEAT TREATED WIDE VISION GLASS FILTER PLATE A-P451H-12

  LOVEJOY JAW COUPLING HUB SET W/ SPIDER 0.750" BORE L-110

 BALLUFF BOS 5K-NS-1D10-02 PHOTOELECTRIC SENSOR 10-30 VDC

 ISOMAG PI0007444 0875MP1250 V6C UL SP NAR A MAGNUM P SERIES SEAL EC26

SWAGELOK SS-12-ST PIPE STREET TEE 3/4 MALE NPT X 3/4 FEMALE NPT X 3/4 FNPT

 PT INTERNATIONAL 60mm SET SCREW BEARING SB212-60MM

 COMET AMBIENT TEMPERATURE TRANSMITTER W/ RS232 OUTPUT 90-30 VDC T0310

 ROBERTSHAW 5210-362 COMMERICAL ELECTRIC OVEN THERMOSTAT 100° TO 550°F 8250

  NUMATICS GUIDED CYLINDER PNEUMATIC SLIDE 3" STK .437 BORE B043A1H3CX

 BR AUTOMATION 7DM465.7 DIGITAL MIXED INPUT OUTPUT PLC MODULE 24 VDC DM465

  AIR-VAC VACUUM TRANSDUCER 1/8" PORT TD260H

DM SSPRAYING SYSTEMS 1/4G SS SPRAY NOZZLES FULL JET 10

 SIEMENS CIRCUIT BOARD S30817-Q922-A301-9

 VULCAN CAL STAT 1E2C9-A THERMOSTAT AIRTX 90300 -100º TO 600ºF 120/240VAC

 DWYER RATE-MASTER