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

Automotion 030105-04 Snub Roller 30-1/8" Length 2-1/2" Dia

 AUTON DX TRAVERSE TRACK

AUTONICS MD5-HF14-AO 5 PHASE STEPPER DRIVER

AutoPilot ChlorSync Salt Chlorine Generator Power Center PoolSync ECP0312

Auto-Valve Inc Cock Poppet Fuel Drain Valve 4820011567205 50C17 697708-1

Aux Countershaft Assembly 14718B 18718B 18918B 18 Speed Replaces Eaton K3220

AUXILEC / SEB (Thales) / Sextant/Jaeger AC Generator Alternator 20040

AVANTECH DLoG MTC 6/12 TERMINAL

Avanti Dual Hytorc AV-05-03S AV 5 DR Coaxial Reaction Arm

AVCO JH23-D104 Series IV1100 1/2" 4-Way Stainless Steel Needle Gauge

Avenger A5017 Double Riser Roller Stand 17 W/Folding Base 74" Max Height

Avenger Turtle Detachable Base C-Stand 40" Main Section 3 Sections SEE DESC

Aventics R431005003 Air Piloted Valve Panel Mount 5 Port 3 Position See Desc

Aveox 3050475-00 Control Board For Gemini-2 Losmandy Telescope Standalone Unit

Avery Fir Tree Curved Ties 7.5" 10mm Black Heat Stabilized 20103-0

Avery Weigh Tronix AW5T27-500010 2.875" Platform Weigh Bar 2-1/4 Dual

Avery Weigh-Tronix 3.73'' Axle Bar 28819-0010

Avery Weigh-Tronix WBT-50K 50' Cable Weigh Bar 50104-0059

Avery Weigh-Tronix Weigh Bar Class III 40' Cable 75000lb AWT27-500080 WBT-75K

Avet Lever Drag Speed Casting Reel SXJ6/4 G2 Gold Right Hand

AVG EZ AUTOMATION EZ-T10C-FU 10.4" HMI OPERATOR INTERFACE

AVG EZD-T6C-SE DURAPANEL 5.7" OPERATOR INTERFACE 24VDC

AVIGILON VMA-AS2-8P4-NA HP VIDEO APPLIANCE UNIT ONLY

AVK Series 03 Gate Valve Small Dia Ductile 2.5" Female NPT Threaded 250 PSI

AVROTools PA62011 Special Countersink Cage Tool Stainless Steel

AVW 2-15/16" Pillow Block Bearing BRG-BR1-WB21516-SS for Carwash

A-W102873 A&I Products Slip Friction Clutch 2500FK96/4 1800 NM 1 3/4" 20 Spline

AWG Fire Water Pump Head 3217 for Hose Attatchment 2-3/8" ID Water Meter

Axis 5 Valve Manifold Flange x Flange 3/8" Port Stainless Steel AX5NM-FFSAT

Axis Communications F41 Main Unit Video Server HDTV 1080P 0658-001

AXIS P1290-E Outdoor Color 4 MM 8.3 FPS Thermal IP Security Camera 01168-001

AXIS P5534-E 0316-001-03 PTZ DOME IP NETWORK CAMERA

Axletech Int. SA75650169 Tapered Roller Bearing 80mm Bore Steel x32016x

AY McDonald 2" CTS Straight Coupling 5131-106

AY McDonald 2" MIP x CTS Compression Brass Ball Valve Stop No Lead

AY McDonald 2" MNPT x FNPT Brass Corporation Stop Ball Valve 300WOG

AZBIL CORPORATION C36TC0UA12K0 TEMPERATURE CONTROLLER

AZBIL SDC36 C36TC0UD12K0 TEMPERATURE CONTROLLER

AZBIL SDC46 AC100 240V C46A1A2RR01100 TEMPERATURE CONTROLLER

AZBIL YAMATAKE SDC36 C36TC0UD12K0 TEMPERATURE CONTROLLER

AZOL Gas Compact Size Gas Spring CW 9500 063 SEE DESC

Azol Gas HSCE 45-45 025 V1 Hydraulic Ejector 240501736 SEE DESC

B & M Holeshot 2400 Torque Converter For 1961-1991 GM TH400, 1968-1981 TH350

B&K PRECISION 30 MHz DUAL TRACE OSCILLOSCOPE 1479B

B&R ACOPOS 1022 8V1022.00-1 SERVO DRIVE

 B&R X20CBM32 BUS MODULE

BACB30YP6K4 Flat Head Countersink Titanium Bolts Screws, 10-32 Thread

 BACHARACH MONOXOR CARBON MONOXIDE INDICATOR KIT 19-0245 19-7016

 BACHARACH MONOXOR II CARBONE MONOXIDE ANALYZER 19-7034/19-7039

Backsplash Mount Faucet Body Only 03010100 NSF Low Lead Chrome

Bag of 1661 TE Connectivity Gold Size 20 AWG Wire .5mm² Wire Size Socket Contact

BagBoy T-2000 Travel Cover w/Patented Pivot Grip Handle Black/Royal BB97051

Baier Flush Hatch Pull-up T-Handle Oval 15″ X 24″ Aluminum BFHOTH15x24

BAILEY PTHDDC1222101A0 PRESSURE TRANSMITTER

BAKER 2045 AIR ELECTRONIC COLUMN UNIT MODULE GAUGE

BAKER 2045 AIR ELECTRONIC COLUMN UNIT MODULE GAUGE w/ STAND

Baker Bearing M1217E Linkbelt Cylindrical Roller Ball Bearing

BAKER DAS-08 PANEL

BAKER HPAL0025 MODULE

Baker Hughes Internal Bonded Seal 47 H033269000 Reliant 10K Hornet Oil Packer

Balcrank 3330-161 DR Metered Oil Control Valve 1-30LPM 1450PSI MAX

Balcrank 50'L x 1/2" ID Medium Pressure Oil Classic Series Hose Reel 2120-013

Balcrank Lynx 5:1 HD Bare Stub Pump 1110-012 83342

Baldor 208-230V 5HP 3PH Electric Motor 60Hz 184TC SEE DESC

Baldor Dodge 006791 Bolted Hub 1090T 2-15/16" Keyed Bore

Baldor Dodge Tigear2, 232A05R18 Cast Iron Right Angle Worm Gearbox Ratio 5:1 Hp

BALDOR ID15H401-W Inverter

Baldor Motor VL3510-50 1HP 1425RPM 1PH 50HZ 56C 3532L TEFC F1

Baldor Reliance 35Z069M492G1 Super-E Motor 1HP 230/460V 160RPM SEE DESC

BALDOR RELIANCE MD-B3011G PC BOARD

Baldor Reliance VEBM3615T-D AC Induction Motor 5HP 1755RPM 3PH 60HZ SEE DES

Baldor Super-E Motor VEBM3558T-D 2HP 5.8A 1755RPM 3PH

Baldor Super-E VEWDM3554 Washdown Duty Motor 1.5HP 1755RPM 3PH 460V

Baldor Tigear II 23Q05R14 Right Angle Worm Gear Speed Reducer 1.125" Shaft Dia.

Baldore Dodge 3 Bolt Mounted Bearing 081469 FB-S2-115R 1-15/16" Shaft Bore

Baldor-Reliance L3403 Enclosed Fan Cooled Industrial Motor .25HP 60HZ SEE DESC

Baldwin Santa Monica Large Pocket Door Passage Dumb Set w/Pull Vintage Brass

Ball Assembly ONLY Curt RockerBall Multi-Fit Gooseneck For 5th Wheel

BALLUFF BOD 63M BOD63M-LB04-S115 BOD0011 BOD ANALOG DISTANCE SENSOR

Balluff BTL7-A510-M0483-Z-S135 Magnetostrictive Linear Position Sensor Rod

BALLUFF OPTOELECTRONICS BOD63 LM01-S115 LASER SENSOR

Balmar Alternator Kit Xt Series 170A 12V XT-EB-170-K4S

BALON 3" FNPT Full Port S.E. 1500 WP Floating Carbon Steel Ball Valve 3F-F63-SE

Balon Ball Valve 2" Full Port Steel 2F-F13N-RF 150 Flanged End Raised Face

Balon Corporation 3" Ductile Iron Threaded Reduced Port Ball Valve 3R-S32-UNI

Balon Standard Trim Carbon Steel Ball And Stem 3" Ball Valve 3F-F13-RF-UNI

Bandit 912-3001-47 Brush Chipper Knife SEE DESC

Band-It C40699 Corrosion Resistant Band 3/4" x 100' Stainless Steel Strapping

Banjo 3" NPT Stainless Steel Bulkhead EPDM Tank Fitting 316 SS TPTF300SS

Banjo 316 Stainless Steel 1-1/2" Bulkhead Tank Fitting TF150SS 3" Hole S

Banjo EVX Actuator 3 Wire White Wire Control 3/4 Second Response EP21A10310

BANNER BMRL4816A RECEIVER SENSOR SAFETY CURTAIN

Banner Engineering 690mm EZ-Screen Low Profile Safety Curtain Light SLPCE25-690

BANNER LS2TR30-1200Q8 RECEIVER LS2E30-1200Q8 EMITTER SET

BANNER MAHCI-1 HIGH RESSOLUTION MINI-ARRAY CONTROLLER A-GAGE MEASURING LIGHT

BANNER MGAB-4 PLOTECH 32920 9930A UL-94 BOARD

 BANNER MGR6016A LIGHT CURTAIN RECEIVER UL/CSA TYPE 4,13: IP65

BANNER MINI-SCREEN MSXLE1224Y EMITTER MSXLR1224Y RECIEVER LIGHT CURTAIN

BANNER MSCA-1-50040 MINI-SCREEN CONTROL BOX

BANNER MSR-1224Y MINI-SCREEN RECEIVER #2

bar Throttle Plate Pneumatic Actuator Valve NDPE-46-300-R, GTE-046 - 300

BARBER COLMAN 6PJA-2G100-000-2-00 BREEZE PARISON CONTROLLER

BARBER COLMAN 6ZJA-2G10A-000-1-00 BREEZE PARISON CONTROLLER

 BARBER COLMAN HC2-101-109-0-1 HUMIDISTAT CONTROL UNIT

BARBER-COLMAN 15Q2-0JFH0-0H0-B-00 SERIES 15Q TEMPERATURE CONTROLLER

BARBER-COLMAN 443 102.021 POWER CONTROLLER 120V 60HZ 25A

Barclay 3-3/8" Spread Tub Filler Gooseneck Spout With Code Lever Handles Chrome

 BARCO A569300 AUTOMATION CONTROLLER

BARCO CIMSERVER 1/0 BRD 07K9 A505182

Barco Start Pulse Generator R765787K For Barco DP2K-32B Projector

BARD 9770066 SITE RITE 6 KEYBOARD MCK-90

Bard K55HXRPE-2968 8106-071 3/4 HP AC Motor 460/400V 60/50HZ 1075/900RPM 1

 BARDEN PRECISION 2107HDL BALL BEARING

Bare Bonz Wiring System Panel Three Relays & Eight F Circuits w/Amp Specific

Bare-Co 100 HP Slip Clutch 1-3/8x21 Spline Female 1-3/8"x6 Spline Male 6" Dia.

BARiL Satin Brass Single-Hole Lavatory Faucet B66-1010-01L-LL

BARiL Single-Hole Matte Black Lavatory Faucet W/Drain B66-1010-1PL-KK

Barksdale 3/4"FNPT Hydraulic Relief Valve T8024-3-33

BARMAG A-E50-3056 PROGRAMMABLE OPERATOR PANEL

BARMAG PK514 ELECTRONIC EA 82D MODULE

Barry Controls APU AFT Vibration Isolator 94830-11

Barton 202N Differential Pressure Unit 2000 SWP 202N-406610

Base Assembly Fuel Filter For Road Reclaimer RM600 RM800 500-0513

BASE ONLY Altitude A6 2 Stage, 2 Leg Rectangle T Foot For Rectangle Desk Top

BASLER ELECTRIC BE1-47N RELAY NEGATIVE SEQUENCE VOLTAGE

BASLER ELECTRIC BE1-59N GROUND FAULT RELAY

Basler Electric MVC-300 Manual Voltage Control 912100106

BASLER ELECTRIC OVERCURRENT RELAY BEI-51

Battery Cable Terminals 6 Gauge 4-3/8"

Battery Watering Tech. K1800TB4-5, 18-Cell Single Point Watering System B-18-LP

Battery Watering Technologies 24 Cell LP Kit 45mm Watering Kit B-24-LP-PA

BAUMER ELECTRIC GI355.A22R023 INCREMENTAL ENCODER