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。

 SEALED Allen Bradley 1769-IA16 /A Compact I/O 16-Pt Digital Input Module

Allen Bradley 1746-IV16 /C SLC 500 16-Point 24V DC Sourcing Input Module

TESTED Allen Bradley 1746-IG16 /B SLC 500 16-Pt Input Module

 Allen Bradley 1771-OGC /A Bulletin 1771 8-Pt TTL Digital Output Module 5V

Allen Bradley 1746-OW8 /A SLC 500 Output Module 125VDC 5-265VAC 50/60Hz

 Allen Bradley 1746-OW8 /A SLC 500 Output Module 125VDC 5-265VAC 50/60Hz

LOT OF TWO Siemens 6ES7 132-4BD01-0AA0 Simatic S7 Digital Output Module 24VDC

Allen Bradley 1746-IB16 /C SLC 500 16-Point Relay Input Module Read

 Allen Bradley 1746-IB16 /C SLC 500 16-Point Relay Input Module Read

Allen Bradley 1746-ITB16 /C SLC 500 16 Pt. Fast Response DC Sinking Input Module

  Allen Bradley 1746-ITB16 /C SLC 500 16 Pt. Fast Response DC Sinking Input Module

Lot of Two Allen Bradley 1771-OA /B Output Module 120VAC 1.5A 210MA

 Lot of Two Allen Bradley 1771-OA /B Output Module 120VAC 1.5A 210MA

LOT OF FIVE Siemens 6ES7 132-4BD00-0AA0 Simatic S7 Digital Output Module

Allen Bradley 1746-IA16 /D SLC 500 16-Point Digital AC Input Module

 Allen Bradley 1746-IA16 /D SLC 500 16-Point Digital AC Input Module

Mitsubishi A1SX42-S2 MelSec Digital Input Module 24VDC 5mA

Allen Bradley 1746-IA8 /A SLC 500 8-Pt AC Input Module 132VAC

 Allen Bradley 1746-IA8 /A SLC 500 8-Pt AC Input Module 132VAC

Reliance Electric 45C963 Shark Programmable Output Controller 16 Point 24VDC

Allen Bradley 1756-IB16 /A ControlLogix 16-Point DC Digital Input Module READ

 Allen Bradley 1756-IB16 /A ControlLogix 16-Point DC Digital Input Module READ

 Allen Bradley 1771-ID16 /A Bulletin 1771 Input Module Isolated 120VAC

Siemens 6ES7 322-1BL00-0AA0 Simatic S7 Digital Output Module 32-Outputs READ

 Siemens 6ES7 322-1BL00-0AA0 Simatic S7 Digital Output Module 32-Outputs READ

TESTED Allen Bradley 1762-IA8 /A MicroLogix 1200 8-Pt Input Module 120VAC 63Hz

Allen Bradley 1794-OB16P /A Flex I/O 24VDC Source Output Module w/1794-TB3S /A

 Allen Bradley 1794-OB16P /A Flex I/O 24VDC Source Output Module w/1794-TB3S /A

Allen Bradley 1746-IV32 /D SLC 500 32 Channel Digital Input Module

Allen Bradley 1746-IB32 /C SLC 500 32-Channel Digital Input Module

Rexroth Indramat DFF1.1 I/O Module Circuit Board 109-0852-4B03-08

 Allen Bradley 20D-STEG-B1 Bulletin 20D High Resolution Encoder

AMK AZ-PS5-A Servo Module Inverter PC Board W/ AMK 26323 AE-ARC-1.01

Goss E78869-1 Rev-01 Digital Ink Controller Printed Circuit Board

 Allen Bradley 1336-PB-SP22B /B Bulletin 1336 PCB Precharge 575V 75-800HP

 OPTO 22 PB32HQ Quad Pak 8-module Rack with Header Connector for G4EB2

IPC Automation 751-5000-002 Printed Circuit Board

Rockwell E13847 Goss Control Module Printed Circuit Board

 SEALED Allen Bradley SK-H1-SVFB2-D1 /A PowerFlex 700S Voltage Feedback Board

Mettler Toledo 0066065044 G 174RTC AnyBus Option FieldBus Interface PCB

Indramat 109-0997-4A28-00 Controller Card Circuit Board

 Allen Bradley SP-194954 /A Bulletin 1395 Drive Board PSI Switcher Kit 173168

Allen Bradley PN-221058 Printed Circuit Board

Goss 1-E17825 Printed Circuit Board Rev 12

Mettler Toledo 00006699976 0006 0RTC AnyBus Option FieldBus Interface PCB

Allen Bradley 1370AR 112997 DC Drive Controller I/O Circuit Board

 Goss E82641 Control Board REV-B

Schneider Electric VW3A3401 Encoder Interface Card For Altivar Range Lift READ

 Allen Bradley SK-H1-SINFB1-A0 /A PowerFlex 700S/700H Interface Board Kit

Indramat 109-0852-4B01-11 Interface Circuit Board Dual Port Screw Terminals

LOT OF TWO Reliance Electric 0-52838 Spindle Drive Printed Circuit Board

 SEALED Allen Bradley 1336-BDB-SP72D /C Bulletin 1336 PCB Gate Drive 250HP

Thermatool G3389 Speed Power Control Assembly Printed Circuit Board

Yaskawa YPCT31522-1A PCB Power Gate Firing Board ETC617191

 Allen Bradley SMN-196259 Bulletin SMN Main Control PC Board

OPTO 22 001788K Printed Circuit Board Assembly

 Allen Bradley 1395-148540 Bulletin 1395 Node Adapter Kit

Ferag 11.3.720.019.21 Release Control Card Printed Circuit Board

Allen Bradley 1370AR 112993 Print Circuit Board Rev 3

Allen Bradley PN-221479 Printed Circuit Board

 Allen Bradley 1336-MOD-L3 Bulletin 1336 TTL Logic Interface Board PN-C22206

Thermatool G3389CR10 Speed Power Control Assembly Printed Circuit Board

Datricon VIA 02 Printed Circuit Board Rev G

Videojet Chesire 368052 Printed Circuit Board With Triad Magnetics Power Supply

 Goss E81714 Couple Controller Inker/Dampener Board With Lon Router

 OPTO 22 PB16A Digital Mounting Rack PCB 16-Channel

Allen Bradley MPS159 112383 Printed Circuit Board

Lantech 55004201 SMC PC Circuit Board Rev A 8Bit A/D 0-0.045V

 Allen Bradley SP-110996 Bulletin 000 Armature Pulse PC Board

Koyo ES-V6048 Printed Circuit Board W/ USB Port 32043844

Quipp P3311-15408-A Logic Board

 Mori Seiki E76001A04 Interface Printed Circuit Board E76001A 04

Computer Dynamics 803-877-8700 Printed Circuit Board

Allen Bradley SP-120659 Bulletin 1336 Drive Board 3-200Hp AC Drive 148363

Control Chief 8600-4014-M886630 Printed Circuit Board

 Goss 1-E80683 Foreign Device Gateway Rev-A

Reliance Electric 0-52837 ACCA Module Circuit Board W/ LED Indicators

Tocco D-209516 Inverter Control Board 4 Relay I/O 8 Input/Output Connections

 Allen Bradley SP-173172 /A Bulletin 1395 Power Board Kit 230-460VAC

 Num CT 349B IP1 Servomac Printed Circuit Board

 OPTO 22 001788M Pamux B4 32 Point Digital Brain Board

 Ferag KX016.1 Printed Circuit Board

 Rexroth VT-VRPA1-151-10/V0/0 Analog Flow Control Valve Amplifier Board

 Num CT349-B1 Printed Circuit Board 2UACLIPF349SR.B1

Infosight IM05455 ITM05446D Printed Circuit Board

Goss E-36387 Distributed Press Speed Board

 Goss E37116 Compensator/Register I/O Board Rev 3 With OACM-5 Relays

Inspectech I-41F-1002 Printed Circuit Board Rev D

 Reliance Electric 0-54389 Printed Circuit Board Brush Monitor Card

 SAF Drive Systems CA452 Encoder Input Card Rev: E A14520

 Rockwell 1-E38712 Press Speed Conversion Board 24V

Inspectech 12-43-1703 Control Logic Printed Circuit Board

Goss E-46384-00001 Connector Board

Allen Bradley 40754-177-53 Printed Circuit Board

Ajax Magnethermic U-02-1836-A Ground Detector Board

Reliance Electric 0-51831-7 CVTH Printed Circuit Board

Rockwell E15469-1 Goss Color Set Columns Printed Circuit Board

Allen Bradley SP-170024 Bulletin 1395 Discrete Adapter Board 170014 Rev:13

Goss E82014-1 Digital Ink Controller Printed Circuit Board

 Allen Bradley 1336-L5 /A Bulletin 1336 Control Interface Board 24V

Saftronics CA436 DDCS Interface Card Printed Circuit Board Rev B

Goss 1-E80683 Printed Circuit Board Rev-A

 Reliance Electric 0-55320 Printed Circuit Board DV/DT Card 460V

Reliance Electric 803624-51E 110196 PCB Board

Web Printing WPC-417 Fountain 12-Key PC Board 185-417-00

Goss 1-E35595 Smartmac Breakout Board Rev 2

Allen Bradley 102509 Printed Circuit Board Rev.01

 STI AXRP 205 17075 PCB Board

Inspectech I-41F-1003 Printed Circuit Board With EBC49DCWN-S420 Connectors Rev B

 Banner 45LM8 Logic Module Delayed One Shot 35496

 SEALED Allen Bradley S50905-002 Bulletin 1334 Driver Board

RO Associates MB-T-SKT Mounting Board MicroVerter uV48T512

 OPTO 22 001788L Pamux B4 32 Point Digital Brain Board

Lot of Two  Goss 1-E40541 Smartmac/42K

MSA A-ULTX-PCB-A-M-3-0-0-0 UltimA Gas Monitor 4 Wire Modbus Output NASO

 Mori Seiki E76036B01 AP-DTP-BC Control Board

Mettler Toledo D14287400A VF Display PCB B14287200A

 Allen Bradley SP-151139 Drive Board Power Supply 40HP PCB Real Kit 151139

 Allen Bradley SP-151135 PCB Base Driver/ Power Supply 15HP Kit 151135

Triangle Package Machinery 9079009-11 Printed Circuit Board Rev. 14

CCTC 94V0E99006 Type S6 Circuit Board ES-V6048

 Infosight ITM19378 Rev. B Circuit Board Assembly # ITM00122

 Power Integrations 2SP0320T2C0-17 Power Module 15.5V 2W 1.7kV 20-pin 600mA

Allen Bradley SP-151135 PCB Base Driver/ Power Supply 15HP 1336-151135

 Allen Bradley SP-120881 /A Real Parts 1336 Kit PCB Precharge 3-30HP

 SEALED Allen Bradley SP-151138 /A PCB Base Driver/ Power Supply 30HP Kit

Triangle Package Machinery 9079009-30 Circuit Board

Baldwin Graphics RTF M-1 94V-0 Printed Circuit Board

 SEALED Goss 1-E17825 Printed Circuit Board

 OPTO 22 001788K Printed Circuit Board Assembly