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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。

1 Allen-Bradley 1785-KA COMMICATION ADAPTER MODULE

Festo MCH-3-1/8 Solenoid Valve Only

Fuji Electric Ea33F Auto Breaker 3P 20A 460V

Cutler-Hammer DC Contactor Sz 1 6002H334B 600V 5A

ASCO 238610-059-D 240V 50Hz Solenoid Valve Coil

ASCO 238210-059-D 240V 50Hz Solenoid Valve Coil

Gould TRS30R TRI-IONIC 30 A 600 V Class RK5 Current Limiting Time Delay Fuse

Allen-Bradley 849-N2A Auxiliary Contact for Pneumatic Timing Relay

Mitsubishi BN634A639G52 QX531B Printed Circuit Board

Allen-Bradley Contactor Sz 1 500-BOD93

Flow Technology Omniflow FTO-5NIXBBLHAS4

Burkert 243/A Solenoid Valve

Siemens Contactor 3P 220/240V 3TF42 22-OAP6

MAC Valve 6211C-000-PM-112DA WITHOUT BASE

Namco Proximity Switch ET111-42110

Cryptronics Portapac II P4064 Dipswitch

ABB ISCA022380R9070 Pistol Handle Black

4 Allen-Bradley Z-34038 Contact Kits PARTIAL

 4 Allen-Bradley Z-34038 Contact Kits PARTIAL

Baumer 1700-009 Control Card

Turck BI10-G30-AZ3X Proximity Switch

Signal System AV-409 S3000 Alarm Display Module

NIRECO MZ11231 AMPLIFIER

Allen-Bradley 872C-A15N30-A2 Proximity Switch

Allen-Bradley 100-C43D00 Contactor with a 100-S Suppressor

Lot of 12 Buss Fusetron FNA-2 1/2

ited Electric 721T-61 B54-9040 Thermostat

Balzers Gauge Head BG G02 270 4 Pin F

ATC 307C082A10 Timing and Control

1 Allen-Bradley 1771-OFE2 B ANALOG OUTPUT MODULE  WIRING ARM

1  1 Allen-Bradley 1771-OFE2 B ANALOG OUTPUT MODULE  WIRING ARM

LANTRONIX MODULE BOARD UD110000B-01

Vickers Pn Coil 314619

ASCO EFHB8342C1MS Solenoid Valve

1 CABLETRON HUBSTACK TOKEN RING HUB W/ LANVIEW STH-44

Leukhardt Tool Monitor 8.0031.02 BK Mikro 2 120V

Telco PA-10-B-513 Amplifier

Bosch FB1 PDHM 101 C50 Check Valve

Eaton Cutler-Hammer E57LAL18T110 Inductive Proximity Sensor

Microswitch Limit Switch DTE6-2RQ2

Allen-Bradley Oiltight Limit Switch 802T-DT 10A

1  Allen-Bradley Oiltight Limit Switch 802T-DT 10A

Digi 77000001 50000175 Commication Board

High Voltage Power Solutions CS2422M21 Power Supply

SMC CP96SDB40-200C Pneumatic Cylinder

Opto 22 PB32P2 PAMUX 2 Printed Circuit Board

Anderson Greenwood Crosby 951101M D Pressure Relief Valve

Allen-Bradley 1492-IFM40F Interface Module

 Allen-Bradley 1492-IFM40F Interface Module

IFM Efector IFM EfectorIFB3002-BPKG INDUCTIVE SENSOR

Rafi Keypad Industrial 3.82500.021/0000/000 24 keys

Namco EE517-42423 Cylindicator

GRACO AUTO-AIRLESS 233-670 SPRAY COMPONENT SERIES E04A

ASCO SC8551A017MS Solenoid Valve

1 YOKOGAWA 103122CAUP7KGS/P AMP GAUGE

Thermo Electric SWT-40006-P3-OU Module

MAC 912A-RA VALVE

CPS  Associates SW-060 24 VAC 2 A 0.9 GPM Pump with Accessories

C-ES30 Black and White Security Camera w/ CMA-D5 Camera Adapter

Hydac 1262992 Filter Element for BDE 400 Series Breather Dryer

Brady 113121 GlobalMarK 2 Industrial Red Tape Cartridge

Cutler-Hammer C301DN3 OVERLOAD RELAY

Banner Engineering RSBLV Maxi-Beam Sensor Head

1 Reliance ELECTRIC 0-54379-1 AUXILIARY M KIT

Telco LR-100-TB58-J Light Receiver

Jumo HR0T-48/K,DI,D,AP JUMOTRON Temperture Control

Ross CX14NA37501W Solenoid Valve

IFM EfectorOU5005-OUS-OOKG Sensor

ESCOGEAR C40 COUPLING ASSEMBLY

LOT OF 10 Bussmann FNQ-R-5 FUSES

SEIKO EPSON CORP SST25C124L MOTOR POSITIONER ASSEMBLY

Bailey Controls NTMF-01 Termination Module

PERMA-CAL 121TID27A21 GAUGE

PERMA-CAL 28034-01-001 GAUGE

Thermacote Welco ER-4043 Welding Wire

Allen-Bradley 871C-A2C12-R3 SENSOR-

BUSS KTK-R-4 FUSES

MICRO SWITCH 911MGC011MC SWITCH

Square D 2510-Kf-2 Manual Motor Starter

1 Ross 1264K77 VALVE KIT

Tri-Tronics F-A-36RT Fiber Optic Light Guide

Square D D221N SERIES E3 Safety Switch-

1  Square D D221N SERIES E3 Safety Switch-

Simpson 3623XA Meter

Square D LCID12F7 Contactor

ASCO 27-469-1 Coil

SOR 12Nn-Kk614-N4-C1A Pressure Switch-

BRK ELECTRONICS RM3 SMOKE DETECTOR RELAY

Westinghouse 1247217-K Fuse

5 Bussmann LPN70 Fuses

Siemens 3TF4-310-0BB4 Contactor

Ametek 80-210831-90 Circuit Board

Pass  Seymour PS320C4-W 125V 20A Water-Tight Receptacle

Balluff BES-516-705-U1.1 PROX- CONTROLLER

LOT OF 11 Allen-Bradley 700-C2 CONTACT CARTRIDGES

1  LOT OF 11 Allen-Bradley 700-C2 CONTACT CARTRIDGES

Emerson Power Supply Module Board 042-66140400

Turck Proximity Sensor NI20-CP40-VP4X2/S100

Enerpac Pressure Switch IC30 500-3500 Psig

Allen-Bradley Capacitive Proximity Switch 875C-D2NP12-P3 10-30 VDC 200mA

PRC Dual Gas Rate Board D8-940-029 D8-940-029-7 plc

Burndy BD18N Flex Copper Braid 18" Jumper

Siemens 75D70646F Coil

Jackson Potential Transformer A54-500-35

SPIRAX UTD M42L Swivel Connector 1541000

Sick Optic Electronic WS/WE9-2P430

imation Inc D918W4 REV G PC Board

Allen-Bradley Photoswitch 42GRU-9001-QD

Pepperl NMB1.5-8GM35-E2-FE-150MM-V1 inductive DC

Honeywell PROXIMITY SWITCH 923C46N-A7T-L

Cutler-Hammer D40RBA REED RELAY 120V

Allen-Bradley 198-OW2-G4 Relay Out Put

Vickers DT8P1-10-30-11 Hydraulic Check Valve

Siemens 3UA59-00-0J OVERLOAD RELAY

Square D 9070T150D39 Control Transformer

Allen-Bradley 140-MN-0160 SERIES C CIRCUIT BREAKER-

 Allen-Bradley 140-MN-0160 SERIES C CIRCUIT BREAKER-

Hycon VD5C0 VD5-C.0 6000 psi Pressure Switch

ITT Pressure Switch 130P1S18 75 PSIG

Allen-Bradley Pilot Light 800T-PT16G

 Allen-Bradley Pilot Light 800T-PT16G

Ohio Semitronics Model CTA213 Signal Conditioner

Balluff BESINDUCTIVE SENSORS  ACCESSORIES BES5163013GSA2PU

ABB A95-30-11-84 CONTACTOR

BEI ENCODER 924-01002-799A

Pilz Safety Relay PSWZ 2S/10

Sick WL10-431 Photoelectric Proximity 24 Vdc

ASCO Coil 110/120V 099257-005-D

Allen-Bradley CB254 COIL

1  Allen-Bradley CB254 COIL

Horton 847072 Facing Kit

DURANT 5-H-11-R PRODUCTIMETER COTER