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。

FAIRCHILD 74ABT574C SERIES ABT, SEMICONDUCTOR, SEE DESC #263616

MITSUBISHI CM200HA-24H POWER TRANSISTOR MODULE INSULATED SEMICONDUCTOR

 LISTING0 Lattice Semiconductor LIF-MD6000-6MG81I -

LINEAR SEMICONDUCTORS DC1227A / DC1227A

CM400DU-12NFH- Module / Electronic Component / Semiconductor

CM75TJA-24FA - Semiconductor - Electronic Component

GS-R405S - Semiconductor - Electronic Component

7MBR75VX120-51 - Module / Electronic Component / Semiconductor

T719N16TOF- Module / Electronic Component / Semiconductor

SKIIP31NAB12T49 - Electronic Component - Semiconductor Module

1MBI600PX-140- Electronic Component - Semiconductor Module

FF225R17ME3 - IGBT - Semiconductor - Electronic Component

2MBI300S-120 - Semiconductor - Electronic Component

TZ240N28KOF- IGBT - Semiconductor - Electronic Component

2MBI300UC-120 - Semiconductor - Electronic Component

1DI500A-030 FUJI Module - Semiconductor - Electronic Component

CM300DX-24S1 - Electronic Component - Semiconductor Module

7MBR100UB-120 FUJI Module - Semiconductor - Electronic Component

SKM400GB128D Semikron Module - Semiconductor - Electronic Component

1DI500A-030A FUJI Module - Semiconductor - Electronic Component

CM200DU-24E - Electronic Component - Semiconductor Module

CARLO GAVAZZI IEC 158-2 VDE 0660 Semiconductor Contactor

Vintage Rare Inmac Desktop LED Clock Metal Glass Semiconductor

M.E.C. Technology Semiconductor MEC384T-6000 Clamp Ring 150mm

Bussmann SPJ-6E600 Semiconductor Fuse SPJ6E600

Siemens 6GK5208-0BA00-2AA3 Relé Semiconductor 24V 0,19A

CARLO GAVAZZI RJ1P48V50E SEMICONDUCTOR CONTACTOR .  

CAS-SEMICONDUCTOR CAS-3000ND-A2-4VM-S-1 transducer, /UPS

Coilcraft 1008HT-33NTGL 16 More Fixed Inductor Available Semiconductor

SEMICONDUCTOR LINE PRESSURE GAS VALVE REGULATOR FILTER ASSEMBLY AS IS BIN#TA-2-i

Semiconductor heater with fan GRZW150 86.74 /T2UK

Bussmann FWH-70 Buss Semiconductor Fuse FWH70

National Semiconductor MM74C914N Integrated Circuit

6MBI75UA-120 FUJI Module - Semiconductor - Electronic Component

SKHI23-12 - Electronic Component - Semiconductor Module

TZ240N34KOF- IGBT - Semiconductor - Electronic Component

6MBI75UB-120 FUJI Module - Semiconductor - Electronic Component

National Semiconductor LM5576 Evaluation Board

SEOUL SEMICONDUCTOR Mid Level Led's STW8Q14D-AX 9000 QTY T5EMCY102

 Semiconductor Wire Stripper With blade Manual High Voltage Cable Stripper

Semiconductor Línea Presión Gas Válvula Regulador Filtro Montaje As Es Papelera

CYPRESS SEMICONDUCTOR CY8CKIT-050B CY8C58LP PSOC5LP DEV KIT

Customs services and international tracking provided

General Semiconductor PIP 50 Sensor PIP50

A25X500 - Gould Shawmut - FUSE Semiconductor, 500A

Philips Semiconductors YV26D 933703690133 Diode, Type: BYV26D

Philips Semiconductors BYV26D 933703690133 Diode, Type: BYV26D

Philips Semiconductors BZD23-C47 933753550133 Diode, Type: BZD23-C47

Philips Semiconductors BZD23-C33 933753510133 Diode, Type: BZD23-C33

Philips Semiconductors BZT03-68 933601710133 Diode, Type: BZT03-68

IC Electronic SMC 33 DA 40 25 BP AC Semiconductor Motor Controller

  1600A 690V SEMICONDUCTOR FUSE 170M6269 17OM6269 #D3

QM200DY1-2H- Module / Electronic Component / Semiconductor

QM200DY-24- Module / Electronic Component / Semiconductor

QM200DY-2HB- Module / Electronic Component / Semiconductor

QM200DY-24B- Module / Electronic Component / Semiconductor

Silicon Wafer Semiconductor Decorative Clock IC CPU IT Technology Creativity

SMC 10-CDUJB10-4DM Miniature  Mot Cylinder 0.7Mpa CUJ Series Semiconductor

F64 F96 PHOTON' CONDENSER SEMICONDUCTOR MANUFACTURING TEXAS INSTRUMENTS LENS

SMC VT317E Solenoid valve 0~0.9MPA 0~9.2kgf/cm2 Semiconductor Store Spare Japan

Siemens BSM150GB100D Moduł Igbt Power Module Semiconductor

Carlo Gavazzi RM1A48D100, Relé Semiconductor 4-32 5v

Texas Instruments CD4042BE Semiconductor

EBARA C-3812-517-0001 SEAL RING SEMICONDUCTOR

AXCELIS 716071 LIFT FIN LOAD LOCK RECENTERING LOWER SEMICONDUCTOR

 3000pcs

SMC SFD100-C06B Clean Air Filter Resin 1.0MPa Semiconductor Store Japan

6MBI150UB-120 FUJI Module - Semiconductor - Electronic Component

BSM200GB170DLC Module / Electronic Component / Semiconductor

2MBI300U4E-120- Electronic Component/Equipment/Semiconductor

T459N24TOF- Electronic Component - Semiconductor Module

GE POWER SEMICONDUCTOR 6RWQ73V **

1000x MBRS140T3 ON Semiconductor Schottky Diodos  Rectificadores 1A 40V

SHELLBACK SEMICONDUCTOR TECHNO Ionization Gauge PN: 405-0300

BUSS BUSSMANN FWH-100A 100A 500V AC/DC SEMICONDUCTOR FUSE **MAKE OFFER**

CYPRESS SEMICONDUCTOR PN CY7C53120E-10SXI IC PROCESSOR NEURON 32-SOIC

LR Cable Featuring PSC Semiconductors

Bed Cooling System, Mattress Cooling Pad, Bed Cooler, Electric Semiconductor Mat

telit 00027nx290414 nxp semiconductors tele kit

  For 170M6515 Fuse Semiconductor #D3

  For 170M6515 Fuse Semiconductor #F8

Siemens Semiconductor Contactor 3RF1211-0RC04 240V 100A, 50/60Hz

 CM200DY-28K POWER TRANSI OR MODULE INSULATED SEMICONDUCTOR #W6

BIOMETRIC Handg Safe 500 DPI Semiconductor Fingerprint Sensor DOJ CERTIFIED

SEMICONDUCTOR CIRCUITS INC. CM23-040 AC-DC REGULATED POWER SUPPLY MODULE

Carlo Gavazzi Semiconductor Relay RN1A48D63 Semiconductor Contactor 63A 480V

Shipping not specified

Carlo Gavazzi VDE 0660 semiconductor contactor semiconductor contactor contactor

04155-66509 B3433 PCB for HP 4156A-Semiconductor Parameter Analyzers

VARIAN SEMICONDUCTOR EQUIPMENT E17280170 SHIELD, FARADAY APERTURE GRAPHITE

FSI PCB Circuit Board Card Assembly B/N290237-200 Rev A USA Semiconductor Spare

TI TEXAS SEMICONDUCTOR Quad Stepper Distribution 01-30798-200 01-30798-201 USA

 MITSUBISHI CM200DY-28K POWER TRANSISTOR MODULE INSULATED SEMICONDUCTOR

SMC MDSUB7-90S Rotary Table Cylinder With D-S7P1 Sensor Semiconductor

IOR 80-5150M15 0322 POWER SEMICONDUCTOR DIODE, 805150M15

  170M8635 Fuse Semiconductor #WD8

10PCS 1019 Fingerprint Identification Collector Semiconductor with light

1 PCS   Semiconductor Contactor 3RF2320-1AA45 #A6-26

Philips Semiconductors BZD23-C68 933753590133 Diode, Type: BZD23-C68

KSB13060 POWER TRANSISTOR MODULE INSULATED SEMICONDUCTOR  #W9

KSB13060 POWER TRANSISTOR MODULE INSULATED SEMICONDUCTOR  #A6-39

TMS JL27C128D/142867 Semiconductor

Part 93448DC Semiconductor

ST M27C4001-15F1 Semiconductor

Siemens BSM150GB100D Moduł Igbt Módulo de Alimentación Semiconductor

10000X NXP Semiconductors BC807-40 933628580235 Transistor -/ -

SKIIP38NAB12T4V1- Semiconductor - Electronic Component

GB50YF120N- Electronic Component - Semiconductor Module

CM200DY-24H - IGBT - Semiconductor - Electronic Component

2MBI300P-140 - Semiconductor - Electronic Component

FF150R17ME3G - IGBT - Semiconductor - Electronic Component

2MBI300VE-120-50- Electronic Component - Semiconductor Module

PM50RLA120 - Electronic Component - Semiconductor Module

2MBI200N-120- Semiconductor - Electronic Component

  For Buss 170M6206 Semiconductor Fuse 700A/690V #D3

  For Buss 170M6206 Semiconductor Fuse 700A/690V #W5

220 PCS OF ON SEMICONDUCTOR BZX55C12RL 12V .05W DIODE

Carlo Gavazzi Solid State Relays RN1A48D63 Semiconductor Contactor 63A 480V

Eaton Bussmann FWX-800A High Speed Semiconductor Fuse, 250VAC/DC, 800Amp

  1600A 690V SEMICONDUCTOR FUSE 170M6269  #T7

  1600A 690V SEMICONDUCTOR FUSE 170M6269  #T6

Siemens Semiconductor Contactor 3RF3412-1BB04

ASM 12-F18986-04 ESIO 24V Power Cable Semiconductor  Stock

ASM 12-F18986-05 ESIO 24V Power Cable Semiconductor  Stock

ASM 12-F18986-07 ESIO 24V Power Cable Semiconductor  Stock

  Semiconductor Power PVC550A-16 Inverter Module #WD8

  Semiconductor Power PVC550A-16 Inverter Module #D1

  For 1250A 690V FUSE 170M6266 SEMICONDUCTOR #W6

  For 1250A 690V FUSE 170M6266 SEMICONDUCTOR #A6-42

  For 1250A 690V FUSE 170M6266 SEMICONDUCTOR #W5

  For 1250A 690V FUSE 170M6266 SEMICONDUCTOR #F4