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。
SEMICONDUCTOR CIRCUITS POWER SOURCE MODULE EC5S3000
BRADY FIBERGLASS 14" X10" OSHA DANGER NO SMOKING SIGN 72118
DIAL MANUFACTURING RESIDENTIAL CONCENTRIC COOLER PUMP UL7500
RELIANCE ELECTRIC POWER MOD INTERFACE 0-57408-B
COOPER BUSSMANN 30A 600V 3-POLE FUSE HER CH30J3
EMERSON FISHER PNEUMATIC VALVE POSITIONER TYPE 3661
SMC ELECTRO PNEUMATIC REGULATOR ITV3050-02N4S4-X440
YAMADA DIAPHRAGM PUMP NDP-5FVT
TEEL 30' 230V PIGGY BACK FLOAT 3288956Y-NC / 3L613
MELTRIC BLUE POLY ANGLED HANDLE 511P6D18
GATES 3-1/8" OAL X 1" DIA IDLER SHAFT 7720-0050
REXROTH / STAR 7" LINEAR BEARING 40 AL12P / R103264020
REXALLOY 3/8" PILOT HOMO VALVE SEAT 124206
GARDNER-DENVER COMPRESSOR REPAIR KIT 000-44759W
ACCU-CODER 64 100USEC 12VDC INCREMENTAL ENCODER 715-1-S-N
LUMENITE 2" TRI-CLAMP 3-PROBE ASSEMBLY CAP 3DAFT2
SMC 120V 150 PSI SOLENOID VALVE NVS4114-0009KP
SIEMENS 120V ILLUM PUSH BUTTON 3SB02-UPF1P
SET OF 2 LUBRIQUIP HYDRAULIC MANIF DIVIDER BLOCKS MXP-100T
GENERAL BEARING 3/4" BORE BALL BEARING S8703-88-300
MAC 110/125V 5.4W SOLENOID VALVE 45A-L00-DAAJ-2JD
USG 2" 0-200 PSI 1/4" PRESSURE GAUGE 163799
NAPA HYDRAULIC FILTER 1759
SET OF 2 MOLEX WOODHEAD LACE OFFST EYE SST 35196SS 62.74 SS062-OF
TEMPCO 800W 230V HEATER BAND 3930016
SMC FILTER REGULATOR LOCKOUT VALVE NAW2000-N02D-C NVHS2500-N02-X116
AMPHENOL SIZE 24 CIRCULAR CONNECTOR SHELL 97-3108A-24
BIJUR .01CC SINGLE COMP OUT OIL INJECTOR ZEM331CA
AVENTICS 1/4" PRESSURE REGULATOR 0821302447
EEC 10HP/240V 20HP/600V 30 AMP CONTACTOR T30-A3-A
PEARSON 1.5" STROKE X 1-1/8" BORE PNEUMATIC CYLINDER 02734
RHP BALL BEARING 3209J
TELEMECANIQUE 12-230V 10W RED STACK LIGHT XVB-C34
1 TELEMECANIQUE 12-230V 10W RED STACK LIGHT XVB-C34
FURNAS 650A 600V SPST LEFT AUXILIARY INTERLOCK KIT 49L100103
GENUINE SKF SPHERICAL ROLLER BEARING 22319-CC/C3W33
GE CIRCUIT BOARD DS200PCCAG7ACB
ALLEN-BRADLEY 15A 3-POLE CIRCUIT BREAKER 140M-I8P-C15-M
MICRO-SWITCH 15A 480V ROLLER LEVER LIMIT SWITCH BZ-2AW822T
ALLEN-BRADLEY 2.6kW SERVO MOTOR MPL-B4530K-MK22AA 7053-05-4201
SQUARE D TELEMECANIQUE DISCONNECT SWITCH GS1-JU-3
DODGE SDS X 1-1/8-QD BUSHING 120398
GEMO 1/2" GLOBE VALVE ANGLED SEAT W/ BUTT WELD 2000124-500015K5934
MAC 120V 6.8 WATTS SOLENOID VALVE PME-111BAAA
SMC 24V 0.1~0.7MPA 1/4" SOLENOID VALVE SY7220-5GZ-02
YASKAWA CONTROL DRIVE CONNECT BOARD ETC740012-S1014 YPHT31500-1C
PHD 1/2" STROKE 3/4" BORE PNEUMATIC CYLINDER 337137-01 DAVB3/4X1/2-M
ROBOHAND FEED ESCAPEMENT RFE-3
GE FANUC POWER SUPPLY BOOSTER CARRIER IC200PWB001C
RHP SUPER PRECISION BEARING 7209CTDULP4
EAGLE MACHINERY AMP SET CIRCUIT CARD EMSS-4011
FISHER PWB ASSEMBLY FIRM REV.6 17B8801X182
DYNISCO 1/8" NPT PRESSURE TRANSDUCER 0-10000-PSI 16-32VDC PT160-10M
SIEMENS POWER SUPPLY 6EP1331-1SH01
1 SIEMENS POWER SUPPLY 6EP1331-1SH01
TRI-TRONICS POLARIZED ANTI-GLARE RETROREFLECTIVE OPTICAL BLOCK R5
GE DIELEKTROL 440VAC 60HZ 30uF CAPACITOR 21L5309
TIMKEN FLANGE MOT BEARING GVFTD-1-1/4S
HONEYWELL .4~5" WC 1/4" NPT GAS PRESSURE SWITCH C6097A1004
ROSEMOT 0-750IN H20 4-20MA PRESSURE TRANSMITTER 1151DP5S22D2L4B1C6
IDC 1-1/4" JAW COUPLING L100
LINEAR SYSTEM SLIDE IT TWA12UU-SR
GATES SUPER HC V-BELT 8V2000 9336-2000
TRI-TRONICS 36" FIBER OPTIC LIGHT GUIDE F-A-36TR 15601
VALMET METSO NELLES AUTOMATION NCU2 PCB A413016 REV. 09
PPC 1-7/8" 1500E CARTRIDGE SEAL AB-187-1-11
FACTORY ANTES 0.1"-24"WC RED SPRING PRESSURE SWITCH JD-2 RED 801111303
SEW-EURODRIVE .75HP GEAR MOTOR DRS71M4FG W/ SA57/A/T
ALLEN-BRADLEY ETHERNET/IP I/O ADAPTER 1734-AENT
MAC 24V 2.5 WATTS 150 PSI SOLENOID VALVE PME-591JC
BANNER RIGHT ANGLE MOTING BRACKET 16640
HONEYWELL 3/4" NPT IGNITOR 64-25663
SMC 1/2" STROKE PNEUMATIC CYLINDER NCDJ2B6-050R-C73LS
SQUARE D 120V 0.3-30 SEC ELECTRICAL TIMING RELAY 9050-JCK-22V20
1 SQUARE D 120V 0.3-30 SEC ELECTRICAL TIMING RELAY 9050-JCK-22V20
FUJI ELECTRIC 0.18-0.27A THERMAL OVERLOAD RELAY TK26E-P18
HUB CITY 2-3/16" PILLOW BLOCK BEARING SPLPB251URX2-3/16
THOMAS AND BETTS 2/0-4/0-C COPPER TERMINAL LUG 150-200N 3418
HKK ANSI 16" CHAIN #5 44 PITCHES CHAIN AP2502
JORDANVALVE 3/4 PRESSURE REGULATOR VALVE 608IS VIT CS SST/VIT
REXNORD OMEGA 5 HUB HRB STEEL 10287386
ALLEN-BRADLEY SER. A 1.0HP .75KW POWERFLEX 40 AC DRIVE 22B-D2P3N104
ALLEN-BRADLEY SER. A 1.0HP .75KW POWERFLEX 40 AC DRIVE 22B-D2P3N104
INA TRACK ROLLER BEARING LR5205-2RS
GENUINE SPARE INTERFACE BOARD EDP000214 FOR DOMINO A320I
LOT OF (5) NOS VENTURE 350 WATT METAL HALIDE LAMP BULBS MP-350W/C/V/ED28/PS
EAGLE MACHINERY CHECKWEIGHT REFILL CIRCUIT CARD EMSS-9017
SONY MAGNESCALEMULTI INTERFACE IT MAIN MODULE MG10-P2
INA ROLLER BEARING LR5202-X-2ZSN
ALLEN-BRADLEY DC 32PT INPUT MODULE 1756-IB32
MORSE RATIO: 5 4.76HP 1750RPM RW REDUCERS ML0036 L04K 25RW B1-R
ATP PNEUMATIC 8MM 1/8" BSPT FLOW CONTROL SPEED CONTROLER 8R-01SC-0
SEMIKRON IGBT DIODE POWER MODULE NL-WPD142-08
FBJ 40MM X 62MM X 12MM BEARING 6908-ZZ
HUMPHREY 120V SOLENOID VALVE M42E1
NOS WILKERSON MIGHTY MODULE POWER FCTION EXPONENTIATOR TRANSMITTER MM4431
VISHAY 2K OHM 10 TURN POTENTIOMETER 534-8872
MPB HT SPROCKET P22-8M-30X1/2 AV03130665 110720
BANNER 10-30V OMNI-BEAM POWER BLOCK OPBT2QDH 27189
AUTOMATION DIRECT RED PUSH BUTTON SWITCHES GCX3221-24 ECX1030
WILDEN DIAPHRAGM PUMP 00-5160-20
INVERTER CONTROL BOARD PB0125A00
CUTLER-HAMER 3-POLE 30A CITCUIT BREAKER HFD3030
KAWASAKI PRINTED CIRCUIT/CONTROL BOARD 9ZG-31 / 50999-1007
SKF 60MM SHAFT SPHERICAL BUSHING GE-60-ESIMP
MAC 120V 5.4 WATTS SOLENOID VALVE 45A-MAK-DAAA-1BA
POTTER BRUMFIELD 5A 277VAC CIRCUIT BREAKER W67-X2Q12-5
SANREX POWER MODULE SDA250AA80
HUBBELL 30A 4-WIRE PIN AND SLEEVE WATERTIGHT PLUG HBL430R5W
SMC COMPACT AIR CYLINDER CDQ2A25-50DZ
EMERSON FISHER LINEAR VALVE CAGE 2U219833272
POWER-TEAM 5 TON 9-1/4" STROKE HYDRAULIC CYLINDER MODEL B NO. C59C
SCHNEIDER ELECTRIC 10A MAGNECRAFT RELAY 750XBXRM4L-120A
BIMBA 3-1/4" DOUBLE WALL CYLNIDER REPAIR KIT K-D-83
LOT OF (46) BUSS 250V 12A FUSES ABC-12A
ASCO NUMATICS A/B PORT MANIF BASE HH-3
VALMET METSO NELES ETHERNET PCB A413225 2
NORGREN SHUT OFF VALVE T73E-4AA-P1N
METSO VALVE REPAIR KIT RKA6TT
SKF BEARING HOUSING D-87-055
PARKER 110/120V SOLENOID VALVE D1VW4EY 70
VERSA 1/8" 3-WAY VALVE BIK-3208-66
MARSH VIDEO JET CIRCUIT BOARD 401-0001-101
GENERAL ELECTRIC 120V GREEN ILLUM PUSH BUTTON CR104PBL11G3S2
SEALMASTER 7/16" FEMALE ROD END TRL-7
SIEMENS 24V AMBER STACK LIGHT 8WD4-420-5AD
SQUARE D 25A 2-POLE CIRCUIT BREAKER FAL22025
CORTELCO STRAIGHT LINE RINGER EQUIVALENCE: 1.0B 184531-128
GE GENERAL ELECTRIC 10A 600V AUXILIARY CONTACT CR7XR40
TB WOODS 7/8" BORE FLANGED SLEEVE COUPLING 4J7/8
BENTLY NEVADA 3300 SYSTEM MONITOR INTERFACE MODULE 3300/03-01-00
GE OSMONICS STAGER VALVE 1080203 R048-TB11-0000B