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。

NOV 8026100 COMPOSITE JOINT BEARING CH80 CM250 - 91072

ELECTROLUX 487174989 SENSOR

NOV-RIGSOL 39532 ORKOT BEARING

PELCO 13VD5-50 1/3" AUTO IRIS 5-50MM VARIFOCAL LENS

MUSASINO L3Y CONTROL PANEL SPARE PART

MITSUI ENGINEERING  SHIPBUILDING 3T83139700 GUIDE PLATE

TECK SKOTSELV PT 100 CLASS B TEMPERATURE SENSOR

FSV-120 FIRE SAFETY VALVE 29A00013

VDO A2C53417228 RUDDER ANGLE INDICATOR 12/24V BLACK

BECKHOFF EL6900 TWINSAFE LOGIC SAFETY MODULE 34140504

SPORLAN FF 1/2 C THERMOSTATIC EXPANSION VALVE - FF 1/2

MITUTOYO 815405 DEPTH MICROMETER

ELBI E-01-206 PRESSURE SWITCH FOR DISHWASHER -  

CASH VALVE 1/4 TYPE-CP PRESSURE CONTROL VALVE - RANGE 100-250 PSI

BCD TORINO 2719 BL FUEL PUMP

CARLO GAVAZZI 1244MCT54M PHOTOELECTRIC TRANSMITTER WITH 4M CABLE

ORAS 169940V PRESSOSTATIC CARTRIDGE

AVENTICS AS2-RGS-G038-GAU PNEUMATIC PRESSURE REGULATOR

CEME VIBRATION PUMP 208-240V 46-60/38-54W-50/60HZ CEME TYPE B46 142 MM

ELCON THERMOSTAT RANGE 120-370°C

EDWARDS ADAPTABEL 435-4G1 BELL 24 VDC 4 INCH

LEGRAND ALPHAREX D22 ASTRO TIME SWITCH 16A,230V,50/60 Hz

DECKMA HAMBURG GMBH 65550 DESICCATOR

PbF RCR505A010A AIR CONDITIONING COMPUTER BOARD

ENTEL CMP750 SUBMERSIBLE HEAVY DUTY SPEAKER MICROPHH906P

 LISTINGASCO JOUCOMATIC SOLENOID VALVE REPAIR KIT FOR SERIES 210

ROLLS ROYCE K101233 BRACKET - LOT OF 6

OMRON H3CA-8 DIGITAL TIMER

OMRON H3CA-8 TIMER 100/110/120 VAC

VERSA P-2002-02-XMAA-D024 VALVE COIL 24VDC

SAMYG BNW-53 BRIDGE ALARM IT

TOA VP-200VX POWER AMPLIFIER INPUT MODULE

KURODA AS2306 SOLENOID VALVE A06-103 AC 100V

HP J3210A 10BT MANAGEMENT MODULE

MUSASINO PSB24

CF8-M Z-5009 NON RETURN VALVE 1/2"

CF8M Z-5010 NON RETURN VALVE 3/4"

CF8M Z-5013 NON RETURN VALVE

FENWAL 08-819511-002 HAT SWITCH KIT

MSA S-CAPE SMOKE HOOD FOR ESCAPE

SECURITRON ASSA ABLOY ZA-32/62 ADJUSTABLE Z BRACKET

REXROTH MNR 5341060002 SERVICE PARTS SET

REXROTH R928025603 FILTER

OMRON STP-MHT SUBMINY TIMER

SKF 99395 SPEEDI SHAFT REPAIR SLEEVE

GOULDS 3196 MTX PUMP SEAL CR 17645

ASCO PNEUMATIC SOLENOID VALVE 8551A005MS

SMC VT-301-021C SOLENOID VALVE

ASCO 551 SOLENOID VALVE G551A001MS 230V

KRAMER RK-3T RACK ADAPTER 19 INCH

DANFOSS 018F6193 SOLENOID COIL BE230CS

HOBART 00-274680 SHAFT

FX-EEPROM 8 MEMORY CARD

PARKER LUCIFER INTERFACE SOLENOID VALVE 341L9597

RS 804-830 QUARTZ HOUR METER 6 DIGIT NON RESET 115 VAC 50-60 Hz

PHOENIX CONTACT STEP-PS/1AC/24DC/0.75/FL POWER SUPPLY

COBOLT OIL GUAGING/ TANK SODING TAPE STAINLESS STEEL 20mtrs

H.R.S 6000 PUSH-BUTTON DOOR RELEASE INNER-

SERTO 461 VALVE - BRASS BODY -  

REXROTH 372 225 092 0 PNEUMATIC SOLENOID VALVE

OMRON C-200H-0D215 OUTPUT IT 24 VDC

CONTRINEX DW-AD-603-M10E-620 INDUCTIVE SENSOR

SYCON 7704 EARTH LEAKAGE RELAY 230 VAC 50 Hz

HOCHIKI SLR-E3N CONVENTIONAL PHOTOELECTRIC SMOKE DETECTOR HEAD

BLU-MOL 1-9/16" 40mm STANDARD TGSTEN CARBIDE HOLE CUTTER 209-7135

DATACARD BLACK HQ MONOCHROME RIBBON KIT 533000-053 -  .

BIFFI G0229A015C00 COVER GASKET 329A015009

GF 721910210 ADAPTOR SOCKET D50-1 1/2" PVC-U -  

GE FANUC IC693CBL300 BACKPLANE WYE I/O EXPANSION CABLE

NORTON 662611-49847 DISCS STICK  SAND PAPER DISCS ROLLS SIZE 6 TYPE A290 GRIT P

SMC VP344-4T1-A SOLENOID VALVE 220VAC 50/60 Hz

ECOLAB INC.  GEN DC SPEED CONTROL 9200-2060 REV. E PCB MODULE -  

WELDLINE COUPLING QUICKMATIC II OXYGEN - FEMALE HOSE 6.3-10mm W000011001

SICK WLL180T-N432 FIBER OPTIC SENSOR

MITSUBISHI CPE14-3BW3M CAPACITOR TSA552B001

SAGINOMIYA WHX-3430BHSA EXPANSION VALVE

MOTOROLA HTN900D SINGLE IT CHARGER WITHOUT ADAPTER -  .

BN-O-MATIC KP-937-30 THERMOSTAT 250 VAC - 25 A

MIZO S14-50A-SINGLE STRAINER FILTER NET MESH016(SUS)

DANFOSS KP61 THERMOSTAT 060L110066

 STAR TYPE III AUTOMATIC CLOSING DEVICE FOR HORIZONTALLY SLIDING DOOR

FESTO CPE14-M1BH-3GLS-1/8 SOLENOID VALVE 196930

PARKER N0C111Q3 SKINNER SOLENOID VALVE COIL 220-240V

OMRON H3Y-4 SOLID STATE TIMER MODULE 100-120VAC 60s -  .

PARKER 10 MICRON RATING, NONMETALLIC BREATHER -  

PARKER 316 147B T0814 ELBOW 90° - LOT OF 6 .

FUJI ELECTRIC ST7P-2 TIMER MODULE 120VAC 10MIN -  .

CASTEL 6110/22 RECEIVER VALVE 1/4" FL X 1/4" NPT

STAL REFRIGERATION 1920 615-A MOTOR TEMPERATURE SWITCH 3 CHANNEL PT-100

HOBART 323592-1 HOT WATER SOLENOID VALVE COIL

PARKER E-43-0100 POLYETHYLENE TUBING 1/4" X 0.040 WALL 100 FT

SIEMENS 6ED10567DA000BA0 LOGO! MEMORY/BATTERY CARD

FINDER 80.71.0.240.0000 SOLID STATE TIMER RELAY

CACTUS TECHNOLOGIES KC2GR-503-99 COMPACTFLASH 2GB MEMORY CARD -  .

ADZ NAGANO DZ-SIL-10.0 PRESSURE TRANSDUCER G1/4 4-20mA

SATCHWELL SVIC T01611 THERMOSTAT

ELECTROLUX PART#OKT787 FLEXIBLE PIPE DN20 3/4"

KONGSBERG 379917 GLAND PACKING -  

LEGRAND 03775 MINIREX QWT41 TIME SWITCH

MRC P7408DS 0001 COFFIN BEARING 17458

CDC 4904 F3 TIMER M48LATS, 6 MIN, 230V~

WOLFLITE C-251 HV LAMP CHARGER

SKINNER V54LB2100 SOLENOID VALVE, AC115V,11W

MITSUBISHI MELSEC FX1S-14MT-ESS/UL PROGRAMMABLE CONTROLLER

CROUZET 81506940 PNEUMATIC FREQUENCY GENERATOR, 0.02 ➞ 8 HZ ADJUSTABLE

CROUZET 81506940 PNEUMATIC FREQUENCY GENERATOR, 0.02 ➞ 8 HZ ADJUSTABLE

TURCK B17-M18-AD4X PROXIMITY SWITCH SENSOR

ELIWELL EWPC 973 ZER CONTROLLER

TELEMECANIQUE-SQUARE D LA9LB920 CURRENT LIMITER MODULE

ELIWELL DIGITAL CONTROLLER THERMOSTAT ID PLUS 974 12V

ASHCROFT PRESSURE GAUGE IC 07060308D - 0 TO 300 PSI -

WABCO 572220 1/2-WAY M14x1.5 SOLENOID VALVE 24v DC

BBC BROWN BOVERI GHR 512 0000 VO OUTPUT MODULE RELAY VDE0160

ENERCON DM 3250 DIGITAL PANEL METER 240V

ENERCON DM 3258 DIGITAL PANEL AMPERE METER 240V 800 AMPS

GENT DOME BELL 24 VDC - 150 mm Dia

Siemens 6EW1380 1AB Sipac Power Supply

SMC AN700-12 SILENCER

DELAY ON OPERATE TIMER CARLO GAVAZZI PAA01DM24

CARLO GAVAZZI PMB01DM24 MULTI FCTION TIMER

SIEMENS 6DR2801-8D INPUT/OUTPUT ALARM MODULE

DANFOSS UT-73 WIDE RANGE THERMOSTAT

VOLVO PENTA 3888460 FUEL FILTER

PELCO MATRIX KEYBOARD CM6700/MUX WIREKIT 220

PR ELECTRONICS 5131A PROGRAMMABLE TRANSMITTER 2 WIRE

MOXA TRANSIO TCC-100 CONVERTER

OMRON C200HW-ME08K MEMORY MODULE

DANFOSS 068Z3206 THERMAL EXPANSION VALVE TX2 Q-71311 R22 R407C -40/10C

BAUMER B148.002XC8C HOUR COTER 7 DIGITS 110 VAC

ICOM BC-152N DESKTOP CHARGER

LUTRON NOVA NF-10-WH FLUORESCENT DIMMER 120 VAC-60 Hz

E.MC BL4000 AIR FILTER LUBRICATOR