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。

以下链接皆有货

SIEMENS 3RV1431-4FA10 28-40A MAX MOTOR STARTER 3RV14314FA10

4X  SWAGELOK SS-810-3 SST TUBE FITTING ION TEE 1/2in TUBE OD FRE

 VNB202CSN15A SMC VNB202CS-N15A PROCESS VALVE WITH 3/8in FITTINGS

COMPAQ PRESARIO V3000 LAPTOP FOR PARTS OR REPAIR WITH BRIEF CASE

 GIDDINGS  LEWIS 501-03438-00 502-02959-00 AC INPUT BOARD 5020295900

 MEASUREX 05347600 REV A VOLTAGE INDICATOR 04347600 REV A

LINK LITE LOGIC 301 PCB CIRCUIT BOARD ID: M23836

WESTINGHOUSE 7379A21G02 6QAV17 SUB-11 ANALOG INPUT CARD ID: M231285

WESTINGHOUSE 7379A21G02 6QAV17 SUB-11 ANALOG INPUT CARD ID: M231315

 LN 445850 REV A / A1A1A6 / TPCC8839H CIRCUIT BOARD S/N 285851-01 ID: M23548

 6GK14152AA01 SIEMENS 6GK1415-2AA01 DP/AS INTERFACE LINK 20E

ABB ABB/ATRP D BKPL 2-A236-1071 / B9BP010.1000 100190 BACKPLANE ID: M23216

WESTINGHOUSE 3111150-001 F3265 HAGAN COMPARATOR ID: M23324

 AXCELIS 0342-0175 / 0567-0075 / 0301-0080 SCAN ALARM ID:M23375 SAME DAY

FISHER ROSEMOT 43B5797X032 REV F / CL6821X1-A5 A.I.0 CARD P1.5.2 ID: M23879

CKD PV5G-8-FG-S-3-N SOLENOID VALVE MANIF PV5G8FGS3N

 FAIRCHILD EA-18983-1 BOOSTER REPAIR KIT EA18983FACTORY

ZMM3920559  PYLE NATIONAL CONNECTOR NEPTE ZMM-3920-559 IN

SBOR 41 EAE SBOR41 CIRCUIT BOARD 693090 4-10PIN CONN 1-20PIN CONN FRE

ORIENTAL MOTOR 0GN6K GEAR HEAD  MSM003-403 SPEED CONTROL 3W100V

 SIEMENS 1P 6ES7 141-4BF00-0AB0 ELECTRONIC MODULE ET200PRO FAST‘N SAMDAY

 WESTRONICS CB100356-01 MUX II CB10035601 SE100359-01 MTI9135

PEP 759555 / VMOD-2 31.112-2010.1 B/01 I/O BOARD VME BUS S/N:64432415 ID: M23235

SNW 7131-102512-103 REV E POWER SUPPLY MONITOR ID: M23819

 GE 948D192G3 CB-MON PNL DIODE 948D191P2 BARE PRINTED CIRCUIT BOARD

WESTINGHOUSE 2840A79G01 3QB027 SUB -5 DIGITAL OUTPUT ID: M231284

LEEDS NORTHRUP 444174 THERMOHM PCB CIRCUIT BOARD ID: M23668

WESTINGHOUSE 2840A79G01 3QB027 SUB -5 DIGITAL OUTPUT ID: M231273

SSR-GSX21-02-AA  CABLETRON ROUTER 1000BASE-SX MODULE SSRGSX2102AA

  LSS120 FEDERAL SIGNAL LSS-120 LITESTAK SOD MODULE 120VAC

 LSS120 FEDERAL SIGNAL LSS-120 LITESTAK SOD MODULE 120VAC

MEASUREX 053641-00 REV A PRIORITY JUMPER DUALDEC PCB 05364100

NIB AMAT 3700-08087 ORING ID 1.421 X .139 9500 KALREZ

AYM339M AMPHENOL 401444 PLUG ELECTRICAL CONNECTOR POWER

  26A1 F  R ENTERPRISES 26A1-13 TRANSFORMER

 PMC PS140S SOLENOID VALVE AC160-220V 50HZ AC170-240V 60HZ

NIB XUMH703535 TELEMECANIQUE XUM-H703535 PHOTOELECTRIC 10-30VDC

 RELIANCE ELECTRIC 86474-R RECTIFIER 86474R THYRISTOR ASSEMBLY

NIB 32326 BANNER S30SN6LP EZ-BEAM S30 SERIES PHOTOELECTRIC SENSOR FRE

ROBERTSHAW SIEBE MPC-4CO ENVIROMENTAL CONTROLS MPC4CO

GO 102603 PR1-1B21A3G111 PRESSURE REGULATOR VALVE 3600PSIG MAX

HAAS LASER 18-06-39-AH V1.1 CONTROL MODULE CIRCUIT BOARD ID: M23676

6LVDLBW4PX SWAGELOK 6LV-DLBW4-PX ¼” TUBE DIAPHRAGM- VALVE

084137 EUCHNER TP3-4121A110M SAFETY SWITCH TP34121A110M

AXCELIS 0303-0002 / 0567-0114 PCB CIRCUIT BOARD ID: M23441

GRANVILLE PHILLIPS 275 MINI-CONVECTRON VACUUM GAUGE 275605

EGG D312187 DIGITAL MONITOR TX PCB CIRCUIT BOARD ID: M23172

F351120 SIMPSON F-35-1-12-0 DIGITAL PANEL METER F35-1-12-0 120VAC

 PANALARM 91AF3T24DC8GP / 090-0062-5-03-N SEQUENCER FLASH CARD ID: M23924

INDUSTRIAL MRO 3-1264A / 1100 61-4052 / 8034046 PCB CIRCUIT BOARD ID: M23222

PX94550GI GOMEGA PX945-50GI PRESSURE TRANSDUCER 0-50PSIG 15-40VDC

WEDGEWOOD TECHNOLOGY 702C-E-QM010 PH MONITOR 702 702CEQM010

NUMATICS 152SA43AMG00061 MK15 S PRT BSE PLGN 1/4G -PING

 INDUSTRIAL MRO 91D0908 / 90D0908 ANALYZER PCB BOARD ID:M23580

 INDUSTRIAL 0589 81-0133-0130 PCB CIRCUIT BOARD ID: M23581

 10-3003D ALVARADO 103003D 1PH 110VAC 24VAC TRANSFORMER

NIB E3SAD36 OMRON E3S-AD36 PHOTOELECTRIC SWITCH 10 TO 30VDC

RELIANCE ELECTRIC 612427-76R SPECIAL CABLE TERMINAL BOARD ASSEMBLY 61242776R

NIB PARKER P1QS050DC7N0075 PNEUMATIC CYLINDER BAR 10 BAR MAX 09-G-L

OPTO 22 G4PB24 WITH 4X G4 ODC5 OUTPUT 60VDC 3A AND 17X G4 IDC5D INPUT 2.5-28VDC

 WESTINGHOUSE 3359C37G01 POWER RANGE CALIBRATE ID: M23261

 RUSCO 701-12958-110-C PCB CIRCUIT BOARD ID: M231211

 NAVCOR MODE 440 BCD / 440BCD TO DECIMAL DECODER ID: M231394

 ABB OS30ACC12 GENERAL PURPOSE SWITCH 1SCA022548R9720 600VAC 30A S SAMEDA

 GE 44A307700 / 1572K17G700 ECCY PK-TO-PK/S VECCY AMPLIFIER 1375 A

WESTINGHOUSE 7379A92G03 7MBC2 SUB-T COMMICATION BOARD MBC V2590

ABB CPUM-03/ACA | 3HNE-03316-1/04 CIRCUIT BOARD S/N #05320004 ID: M23601

INDUSTRIAL MRO CD101 | 11669 | CD101-A-6-A-1-M | E5586-178-P BOARD ID: M23628

 OPTEL VISION OP300PWR-C0 PCB CIRCUIT BOARD ID: M23078

 PANALARM 91AF3T24DC8GP / 090-0062-5-03-N SEQUENCER FLASH CARD ID: M231169

RELIANCE 612230-W CALIBRATED BOARD  612234 DC VOLTS 600-0-600

CRT1OD16 OMRON CRT1-OD16 REMOTE TERMINAL 16 POINTS 24VDC 12mA

CRT1ID16 OMRON CRT1-ID16 REMOTE TERMINAL INPUT 16 NPN 24VDC 6mA/P

DELTRON CB-3 | CB3 AMPLIFIER PCB CIRCUIT BOARD ID: M23675

 SICK WL9L-P430 OPTIC ELECTRONIC LASER REFLEX SENSOR 1023958

PLC Direct D2-08TR, D208TR, D0-16ND3, D016ND3, D0-DEVNETS, D0DEVNETS

 SYMAX 8010-CC-110 CABLE 10FT 25-PIN RS-232-C 8010CC110 R5-232C

KYOCERA DMC40202NY-LY-ARE-AZN 6in LCD DISPLAY ID: M231085

WESTINGHOUSE 2840A79G01 3QB027 SUB 5 DIGITAL OUTPUT ID: M23301

 NUS INSTRUMENTS NUS-B124PA-17 PCB CIRCUIT BOARD ID: M23343

WESTINGHOUSE 2840A79G01 3QB027 SUB-5 DIGITAL OUTPUT ID: M231153

NIB CCW 30641 TYPE 113F CRAMER 60HZ 2.7W 24V 1/4RPH TIMER MOTOR

CONTROL KING 2010-20 TEMPERATURE CONTROL 20AMPS 4800WATTS 201020

FISHER-ROSEMOT 41B5215X122 REV N CL6721X1-A3 DISC I/O CARD P1.4 ID: M231339

 ELECTROSCALE 525-1 PCB CIRCUIT BOARD 013250-001 5251

 BABCOCK VL-01SP-01 PA100081-01 ALPHANUMERIC DISPLAY VL01SP01

 LOT OF 8 10AMP SQUARE D 10kA CIRCUIT BREAKER TYPE QOU SER 3 HACR

MOELLER PKZM0-4 COMBINE MOTOR STARTER PKZM0BK25/3-PKZ0-E  WOHNER 32-442 EQUES

MOELLER PKZM0-4 COMB MOTOR STARTER  BK25/3-PKZ0-E  NHI11-PKZ0  WOHNER 32-442

NIB G919170008 K-TRON G919170008 FANOUT PC CIRCUIT BOARD

NIB D0-1132-000 MODICON AEG DO-1132-000 OUTPUT MODULE 12-24VDC

 CMH INDUSTRIES 3553-3FA 53081 ANDON WIRELESS SWITCH 3 PIN AMBER

ORIENTAL MOTOR MSM540-412 SPEED CONTROL MOTOR  5GN7.5K GEAR HEAD

TRUMPF HAAS-LASER 18-13-10-AH | 18-13-10-BS PCB CIRCUIT BOARD ID: M23134

SMC CDM2KL32-150K CYLINDER ROD BODY, NEO.BOOT CDM2KL32150K

TRI-TRONICS SMARTEYE SER EDR ENHANCED DYNAMIC RANGE SENSOR

TRI-TRONICS SMARTEYE SEIK EDR ENHANCED DYNAMIC RANGE SENSOR

 OF 5 SIEMENS 6ES7-132-4BB31-0AA0 SIMATIC DIGITAL OUTPUT MODULES

NIB 17261 BANNER BR23S GLASS FIBER DIFFUSE MODE ARRAY BDLE SHEATHING

 ALLEN BRADLEY 43GT-FIS25SL GLASS FIBER OPTIC CABLE  SENSOR

 PHOENIX EMG-75-NZG/G24/2 VOLTAGE REGULATOR EMG75NZGG242

 CR5220-10 CR MAGNETICS 4-20MA DC CURRENT TRANSDUCER CR522010

 RUSCO 701-12958-110-C PCB CIRCUIT BOARD ID: M23694

NIB 16428009 NIPPON SEISEN NASclean BF-1.125C PT-30 GAS FILTER 316L

  BANNER 2SBDX1 MULTI BEAM 17484 MISSING COVER BOLTS NUT FRE

GE 204B6143AA BYPASS CONTROL VALVE CIRCUIT BOARD S/N:1GMM1 ID:M23340

RELIANCE ELECTRIC 85014-RR RECTIFIER STACK 85014RR 85014 RR  SAME DAY

ALLEN BRADLEY 104-C09DJ22 REVERSING CONT w/193-ED1CB  140M-C2E-B16  140M-C-TE1

 PCL725 ADVANTECH PCL-725 RELAY ACTUATOR ISOLATED 8CHANNEL

 EMERSON 3A99266G01 REV 07 I/O TRANSITION PANEL ID: M231321

INDUSTRIAL MRO 7690101 / 120292 ASSY 3768 PCB CIRCUIT BOARD ID: M23765

  VISOLUX NT1.5-2011/03kv0 PROXIMITY SWITCH 10-30V

ASPECT SYSTEMS A810-4092-001 CIRCUIT BOARD S/N 101062 ID: M235958

4 PCS R071G1NN4A NORGREN R07-1G1-NN4A PRESSURE REGULATOR 4WAY

 LOT 4 HONEYWELL 993AB30BT-B2 PROXIMITY SENSOR-SWITCH 993AB30BTB2

 BA1.512SMETA BANNER ENGINEERING 62235 FIBER BA1.512SMETA

IBES ADC12/8 REV 2 842993 NUT RNER CONTROLLER STA050-MK 6010

AOUT4/16 REV C2 ANALOG OUPUT 19DA0204 PC BOARD B51D37 70000325

NIB 3700-06173 AMAT SEAL CENTER RING NW100 W/KALREZ 9100 ORING

 KLOCKNER MOELLER PKZM0-4 MOTOR PROTECTOR PKZM04 - FACTORY

JAMSC-B1051B  YASKAWA MEMOCON-SC I/O MODULE 100V JAMSCB1051B

 CONTINENTAL DISC 8013524A RUPTURE DISK1-1/2IN SANITRX  

R1.188.3580.0 WIELAND SNO 4083KM-A SAFETY RELAY DC24V 1.6W  LIKES

NIB ALLEN BRADLEY 800MR-HX5BLAK ROD SELECTOR SWITCH 300V MAX 10AMP

 4477A21H01 WESTINGHOUSE 7524A98G03 TYPE IMC 200:5 TRANSFORMER FRE

 SX LTD DPX-410A-IN 0-142PSI DIGITAL PRESSURE SENSOR DPX410AIN

 NA 9285-E2-DTD / 9285E2DTD PCB CIRCUIT BOARD

MOORE ACROMAG 380E4 1018-148 15376-6-S CIRCUIT BOARD ID: M23645

ACROMAG 15376-6 / 1018-148 PCB CIRCUIT BOARD ID: M23738  SAME BUS DAY

 100X AMAT 3700-01008 ORING .239 X .070 V747 2-11774500-127 BLACK

HITRAN CORP PK0004 / EN0004-00 REV 9 PCB CIRCUIT BOARD ID: M23584

 34935 FESTO MUHX2-ZP-D-3-24G SER ED02 145PSI INTERMEDIATE PLATE