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。

ONLINE ELECTRONICS 3002/3003 SYSTEM ELECTROMAGNETIC MONITORING SYSTEM

SW Cardio-Aid MC Multiple Configuration CE 7005

SIEMENS 1010DNR-T2KGS MULTI FCTION ULTRASONIC FLOWMETER SYSTEM

Chauvin Arnoux C.A 6545 / CA6545 Megohmmeter - Without Any Accessories Included

PROCEQ EQOUTIP 3 353-00-001 HARDNESS TESTER

PEPPERLFUCHS RSD-GW2-Ex2.DPE PROFIBUS DPE GATEWAY PN-109414 - TRIED  

ALLEN BRADLEY 1715-OF8I SER.A 8 CHANNEL Analog Output Module PN-75420

HTZ HOOK  TUCKER ZENYX LTD. COMPUDIL 300 DILUTER DISPENSER - WITHOUT HANDSET

ALLEN-BRADLEY ABSOPULSE 80026-044-06 SWITCHING POWER SUPPLY -  WITHOUT

Kongsberg Autochief C20 PROPULSION CONTROL SYSTEM ACP Ver 3 Rev B1

WOODWARD SEG BL20400 BATTERY CHARGER

VAISALA SPS220 SODING PROCESSING SUBSYSTEM

Yokogawa AQ7275 Optical Time Domain Reflectometer 735041 -NO BATTERY  ACCESSORY

KARDEX GS160/GS160-1 Rev 2.2 Mother PCB Board

KARDEX GS160/GS160-1 Rev2.1 Mother PCB Board WITHOUT ACCESSORIES

Hirschmann TOFINOXE-0200T1T1TDDV90007TAT03.2.01 Tofino Xenon Security Appliance

Schneider Electric ADVC2-1070-E Religador Automatic

VTQ VIDEOTRONIK O.R.C.A COFDM RADIO COMMICATION APPLIANCE W/O ANY ACCS.

LG VDQ-00QA2 HVAC CONTROLLER /DISPLAY DATA CHANEL II

GEC ALSTHOM LFCB 103 / LFCB103S50203E Digital Current Differential Relay

GEC ALSTHOM LFCB 102 / LFCB102S50120B Digital Current Differential Relay

GEC ALSTHOM LFCB 102 / LFCB102S50203D Digital Current Differential Relay

TSI AERO-TRAK 9306 -V2 PARTICLE COTER -with charger only

MADUR GA-21 Plus - Portable Flue Gas Analyzer -Rusty parts

METTLER TOLEDO 51109017 TERMINAL DISPLAY - WITHOUT ACCESSORIES

4XD125B / 580242 Honeywell Direct Drive VA Amplifier with Battery Charger

Siemens ULTRAMAT 23 Gas Analyzer - OK / it Only, Without Accessories

HIRSCHMANN CSE 2000 GENERATION 2 CHANNEL PROCESSING IT- TRIED  

ALMA 570-950NM HAND PIECE LASER 800013916

Online Electronics Ltd. Model 3002 RS Receiver  3003 ElectroMagnetic Antenna

MARTIN ENDOPHARE SPHINKTERTEST C LIGHT SOURCE

AOPEN WT15M-FB pixels Multi-Touch Multi-Ulack RMG-AIO-15

VI451 YOKOGAWA VI451-10 STYLE S3 COMMICATION MODULE-  WITHOUT

WAGNER EPG-SPRINT X 85-250VAC 47-440Hz MAX.40W Controller it W/O ACCS.

MOOG FO6516 Rotor Electronics Laser  WITHOUT ACCESSORIES

MOOG FO6513 Rotor Electronics Laser  WITHOUT ACCESSORIES

RITTAL JET04C.AMOS ENCLOSURE COOLING IT D-35745 W/O ANY ACCS.

Ex-Or MLSUCA MK2 INSTALLATION GUIDE Doc:50054519-001 Rev.C by Honeywell

Agilent Technologies U1610A / 2Ch 100MHz Portable Oscilloscope

BOSCH LBB 4421/10 POWER AMPLIFIER 100-240 50-60Hz W/O ANY ACCS.

Vaisala HydroMet System MAWS110/MAWS110DCP Analytical Weather Sensors Panel

GENERAL ELECTRIC GE 369-LO-R-0-0-0-0 PROTECTION RELAY WITHOUT ANY ACCESSORIES

GENERAL ELECTRIC GE 369-LO-R-0-0-0-0 PROTECTION RELAY(WITHOUT )

LUST VF1424LHF,OP2,S56 SERVO DRIVE

LG ACP IV PACP4B000 HVAC Controller/Advanced Control Platform IV P/N ACM74638802

DET-TRONICS EAGLE QUANTUM PREMIER EQ3730DW 8 CHANNEL EDIO WITH FILTHY

ABB HIEE200130R0002 AF C094 AE02 ARCnet Control Panel Display- with Missing Part

ABB HIEE200130R0002 AF C094 AE02 ARCnet Panel Display - Missing Keypad Label

Online Electronics Ltd. 3004 EM Antenna / Frequency: 22Hz

FLIR SYSTEMS InfraCAM Thermal Imaging Camera

ABB ROFBU 367 105/1 R1C 2003W48

Geoservices Part No. 501-GA-020 AutoCalcimeter WITHOUT ACCESSORIES

BIDDLE INSTRUMENTS 15KV DIELECTRIC TEST SET CAT .220015

MULTILIN SR735 / 735-5-5-125-485-DEMO Feeder Relay

MORI SEIKI M730BM- E77326A01/24V -2.4 A - WITHOUT ANY ACCESSORIES

PCE Instruments PCE-VE 300 Series Industrial Test and Measurement PCE

GE MULTILIN SR469 MOTOR MANAGEMENT RELAY 469-P1-LO-A20-T - TRIED  

FANUC A02B-0323-C074 SERIES 35I-MODEL B 10.4 LCD IT - Without Accessories

Hima HiMax X-DO 24 01 985210203 HW-Rev. 14 OS-Rev. V7.28 -  WITH DAMAGED

ROTHENBERGER ROFUSE 400 TURBO HEATER WELDING MACHINE

GE DIGITALFLOW GC868/ GC868-2-21-10416-0-0 GAS FLOWMETER

TIGRIP TZR 50t / FFB 201

WOODWARD SEG BL20400 / BL20-400 BATTERY CHARGER

Georg Fischer WR200 Welding Recorder S/N: 100181 - FOR PARTS OR NOT WORKING

GE Multilin 750-P1-G1-S1-HI-A20-R-T-H / SR750 Feeder Management Relay

Biometrics E-Link X4 / G200 Amplifier Sensor GX3, GX4 / AngleX Sensor NC3, NC4

GE Fanuc XDP-221-2 Display for Thermal Conductivity Transmitter

ABB HIEE200130R0002 AF C094 AE02 ARCnet Control Panel Display W/O ANY ACCS.

ALLEN BRADLEY BULLETIN 1394 5KW SYSTEM MODULE IMC-S

LG PACP4B000 HVAC Controller / Advanced Control Platform IV

ONLINE ELECTRONICS LTD. 2001 8-50KHZ RECEIVER WITHOUT ANY ACCESSORIES

ELGI NEURON II COMPRESSOR CONTROLLER 00897701N - OK, WITHOUT ACCESSORIES

ELGI NEURON II COMPRESSOR CONTROLLER - IT ONLY  WITHOUT ANY ACCESSORIES

AB 1715-OB8DE  FW K13 8 Point Digital Output Module 1715OB8DE PN-75418

ABB itrol 1010 3BHE035301R0003 - OK

ESS KELJI ECHO EK1 V1.01 SEISMOLOGY RESEARCH CENTRE 0536

V3F16ES KTYPE:713940G01 LCE-Drive

 SCHAEFER A1: BUS 08 incl. TC02-01-ETA with / A1 BUS 08 incl TC02 01 ETA

ECS 040F661 PC-MMX / 040F493 / 040F163 / 060C436

KEBA SX TPU 2 16/64 3HAC023195-001 /04 SX Teach Pendant it-2 16/64

DANFOSS GDA Gas Detection / Micromon XP (SET)

Extech Instruments HDV-5CAM-30FM Macro Lens Flexible Probe

GE XL Go Inspection Technologies

FISHER-ROSEMOT 01984-2372-1001 OPERATOR KEYBOARD WITH TRACKBALL - NO ACCESSORY

YOKOGAWA EB501-50 S2 BUS INTERFACE MODULE -  WITHOUT

HANNA Instruments PCA320 Chlorine/pH Analyzer PCA-320 230VAC

Alcatel 3AL78962BA LUCENT 1660SM 3AL78962BAAC /1660SM OMSN BOOSTER 10DBM SC/PC

ABB ROFBU 367 103/2 R1B COBUV INTERFACE CARD

CROWCON Gas Monitor C8403A Control System 250V 50/60HZ W/O ANY ACCS.

GE IS215AEPCH1FA With IS210BPPCH1AC CONTROL BOARD

X-ray Cam Type 13 Electronic Controller - Without Accessories

THRANE  THRANE INMARSAT EXPLORER700 - 3703A Antenna  3732A Tranceiver

TOSHIBA SF6 Gas Moisture Meter MTS5-PT Series 5 - Incomplete Accessories

BROCADE ICX7250- 24P RUCKUS WIRELESS

iOP BKDC16-0045 H/WV033A S/WV FW37 4.41 Control Panel WITHOUT ANY ACCESSORIES

GEFRAN M088-RX-1 Switching Power Supply

RUGGEDCOM RX1000 RuggedRouter RX1000-R-RD-HI-XX-XX-M1-TX01-FX11-TC4-XXX-XX

AMETEK ETC-400 A 11 Infrared Temperature Calibrator - TRIED  

LINEGUARD AKUSTISCHES GEFAHRENMELDE-SYSTEM NEUMANN ELEKTONIK 42512

SELTA STCE-RMU LOCAL CONTROL PANEL

SCHNEIDER ELECTRIC T200 DMS SYSTEM RTU - IT ONLY, NO ACCESSORIES INCLUDED

SIMPLEX 4100 Fire Alarm 623-106 REV A / 526-817 B

Honeywell XLS140-CPU2E Fire Alarm System

SIEMENS 5895292G2179 SC-Control-it 6BK

ABB NSD 45 / HE368413 / HENF 105166 R2 / HE 491789-935

PCE Instruments PCE-VE 300 Series Industrial Test and Measurement

ABB SPAA 341 C2 FEEDER PROTECTION RELAY

FUSION Q 230V BC WELDER CONTROL IT

OMEGA BB702 High Performance Blackbody Calibration Source

ABB BUSCH-JAEGER BUSCH-COMFORT TOUCH 58513- WITHOUT ACCESSORIES

BOSCH BY PHILIPS LBB 4421/00 NC 8900 442 10001 100-240V 50-60Hz 880VA W/O ACCS.

Allen Bradley Enpac 2500 1441-PEN25-2C Data Collector - MOTHER BOARD ONLY

1  Allen Bradley Enpac 2500 1441-PEN25-2C Data Collector - MOTHER BOARD ONLY

GE FANUC IC695NIU001CA-ABAA RX3i ETHERNET NIU WITH TWO SERIAL PORTS

SANDVIK Cavotec MC-3300 2.4GHz/P -Without key  without accessories

ABB VBR01-FPNA, 2VAA008433R1 Base Field Power Neutral Mtg Base 120VAC 24VDC 6A

ABB VBR01-EPDA 2VAA008432R11 Symphony Plus Field Power Neutral Mtg Base PR:D

ECONOSTO pim 2000 Range 10 Bar

DILO D-87727 Babenhausen SF6-Analyser 3-036-R001 - WITHOUT ACCESSORIES INCLUDED

SCHNEIDER ELECTRIC RELIGADOR AUTOMATIC ADVC2-1070-E

Burat  Klein 5025 PrufMess-USB-DSP-CA

SCANGAS Snap-on Handheld Gas

TEKTRONIX TDS 540D 4 CHANNEL DIGITAL PHOSPHOR OSCILLOSCOPE 500MHz 2GS/S W/O ACCS

1  TEKTRONIX TDS 540D 4 CHANNEL DIGITAL PHOSPHOR OSCILLOSCOPE 500MHz 2GS/S W/O ACCS

FORTRESS INTERLOCKS TGARD KIT THFRXSNSMDUPZQ7, THESSQ1, THSSMDLW1, THFSNABBF,..

RuggedCom RX1000-R-RM-HI-HI-XX-XX-TX01-FX01-XXX-XXX-XX

Agilent Technologies IDP-3 Dry Scroll Vacuum Pump - WITHOUT ANY ACCESSORIES

SIEMENS SIRIUS 3RT1065-6.6 CONTACTOR 3RH1921-1DA11-ZX90

BOSE ControlSpace ESP-880 Engineered Sod Processor

E.C.S CNC2400D / CCM15X04-R RGB/DVI

Intellian VG-61-BJW ANTENNA IT V0614040041 WITHOUT ANY ACCS.