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。
PARKER RG02MA0101 GLAND CARTRIDGE KIT 1.00 2MA
HUBBELL KELLEMS 1/2" NPT .37-.5" STRAIN RELIEF DELUXE CORD GRIP 074-01-008
BELIMO WLF US SINGLE PACK LINKAGE KIT FOR B2, B3, CCV
WILKERSON COMPRESSED AIR FILTER F01-02-000 1/4" NPT 6B290
MAHLE OIL FILTER OC79
DIXON STAINLESS GLS415 OIL FILLED GAUGE 0-100 PSI 1/4" BOTTOM FEED 2.5" FACE
DM SSEAL MASTER 1/2" 3 PIECE FEMALE ROD END TR 8
BREWER 20 TOOTH IDLER ROLLER SPROCKET 0.6350" BORE 0.3750" PITCH B3520H
WESTINGHOUSE CONTACT REPLACEMENT SET TYPE A SIZE 0 3 4 POLE 373B331G04
DM S WESTINGHOUSE CONTACT REPLACEMENT SET TYPE A SIZE 0 3 4 POLE 373B331G04
NCC 1.2-120 SECOND SOLID STATE TIMER 10 BLADE K1K-120-661
TB WOODS SD178 SG BUSHING SDX1 7/8
DM SLEVITON 9875 MEDIUM BASE KEYLESS PORCELAIN LAMPHER
TIMKEN SCJT 1 3/16 2 BOLT FLANGED BEARING 1-3/16"
WESTINGHOUSE BREAKER FEEDER STABS 8 AWG WIRE
SPORLAN 400416 CATCH-ALL REFRIGERATION FILTER-DRIER 1/4" SAE FLARE C-082
CROMPTON INSTRUMENTS 253-TALU PALADIN RELAY 0.5 AMP 120V
TIMKEN TAPERED ROLLER BEARING SNAP RING CUP 3919RB
ALLEN BRADLEY 1771-OFE1 ANALOG OUTPUT MODULE SERIES B FWR A W/ 1771-WC ARM
ALLEN BRADLEY 1771-OFE1 ANALOG OUTPUT MODULE SERIES B FWR B W/ 1771-WC ARM
DM S SIEMENS 110 VAC INPUT MODULE 505-4216A
DM S GE 15 WATT COOL WHITE FLUORESCENT LAMP T12 BI PIN 10183 OF 6
MARTIN TAPER LOCK BUSHING 2-1/8" BORE 2517 2 1/8
ALLEN BRADLEY 875CP-A20N30-R3 CAPACITIVE PROXIMITY SWITCH SER. A
ALLEN BRADLEY 875CP-G20N30-R3 CAPACITIVE PROXIMITY SWITCH 24-240 VAC
DM SPHILIPS MR16 BASE GU5.3 BEAM 36° 3000 HRS
SWAGELOK SS-400-2-6 STAINLESS MALE ELBOW 1/4 TUBE OD X 3/8 MNPT LOT OF3
SWAGELOK SS-1210-7-8 STAINLESS FEMALE CONNECTOR 3/4 TUBE O.D X 1/2 FNPT
VERIS INDUSTRIES H608 HAWKEYE 175 AMPS SPLIT-CORE CURRENT SWITCH 600VAC
EDWARDS EST FIRE ALARM SINGLE INPUT MODULE SIGA-CT1
EDWARDS EST FIRE ALARM SINGLE INPUT MODULE SIGA-CT1
WARNER ELECTRIC ACCESSORY COVER KIT 5370-101-076
ALLEN BRADLEY () THERMAL OVERLOAD HEATER ELEMENT B49
EDWARDS EST FIRE ALARM SINGLE INPUT MODULE SIGA-CT1
EDWARDS EST FIRE ALARM SINGLE INPUT MODULE SIGA-CT1
ASCO RED-HAT SPARE PARTS KIT 174-038
CHESTERTON 891 MECHANICAL ROTARY SEAL 1 1/4'' FKM O'RINGS CB/S SH 673073
DM SDICHTOMATK TCM BA RUBBER OIL SEAL 1" x 1.5" x 1.25" 101562TB-H-BX
DM SABS 1-1/2" 0-60 PSI PRESSURE GAUGE 14FLZ6
ELLIS WATTS 120W BAND HEATER KDD-HTR1006 120VAC K0907-0104-3
ELLIS WATTS 120W BAND HEATER KDD-HTR2006 120V K0907-0104-5
SPIRAX SARCO 2 1/2" FLOAT KIT 55447
BANNER PKW6Z-9 QUICK CONNECTION CABLE 6 PIN MALE
TCP E3P32ISVLE INSTANT-START ELECTRONIC BALLAST 2-LAMP 32W T8 120-277V
INTEL KCC-REM-CPU-G28429 PCI 2 PORT ETHERNET ADAPTER
WARNER ELECTRIC CONDUIT FOR CLUTCH/BRAKE 5162-101-002
WILKERSON MSP-96-649 FILTER ELEMENT
PRECISION IVERSAL JOINT 396
BRASSCRAFT 1/2" x 60" GAS CONNECTOR SAFETYPLUS 2 VALVE CSSD64TE-60X5
DM SCISCO STACKING CABLE 37-1122-01
MARTIN TAPER BUSHING 2517 2-1/2"
2DM SSCHOOL SMART 2 POCKET LEATHERETTE FER DARK BLUE 8.5" X 11" 25
LITHONIA LED EXIT SIGN WITH BATTERY 120/277V 388066 / 3BA32
LITHONIA LED EXIT SIGN WITH BATTERY 120/277V 388066 / 3BA32
P122393 AIR FILTER APR 94C LEAR SIEGLER 2276 AIR FILTER ELEMENT 6707419 14A
5DM SPOWERS 07402 TOGGLE BOLTS ROD HEAD 1/4" X 2-1/4" 2
DM S1-1/2" 100 PSI PRESSURE GAUGE 1/4" NPT 4FLR2B
BAND-IT S122 TRI-LOKT STAINLESS TYPE 316 HOSE NIPPLE 1/2" to NPT 1/2"
DM SFURNAS (DM SBJJ 1-N.C (1) BJK 1-N.0 CONTACT BLOCK HEAVY DUTY
DM SLEVITON 05623-2W 2 WAY GRODED ROCKER SWITCH 20 AMP 120/277V
DART CONTROLS SA-STOK-WO SPEED POT WITH LEADS KNOB DIAL
SIMPSON ELECTRIC CAT# 01293 CURRENT TRANSFORMER CT SERIES 50:5 RATIO
DM SSIMPSON ELECTRIC CAT# 01293 CURRENT TRANSFORMER CT SERIES 50:5 RATIO
MRC 306SFF H201 BEARING 306SFF H201 STEEL/C3/ABED-1
SQUARE D AR OVERLOADS - CHOOSE YOUR RANGE
DM SCISCO WS-G5484 1000BASE-SX 800-23857-01 (DM SWS-G5486 800-23858-01 (1)
SNR ROLLER BEARING 6210.EEJ30A50 K91
DM SPRECISION T-168 3 WIRE RAINTIGHT PHOTO CONTROL 208/277 VAC
DM S IKO SHELL NEEDLE ROLLER BEARING 3/4" ID 1" OD 1" W CAGED BA1216ZOH
ALLEN BRADLEY FLEX I/O CONTROLNET ADAPTER 1794-ACN15 REV A01 FWR B 24VDC
DM S C3 CONTROLS 13SBLA120ST LED PILOT LIGHT AMBER 120VAC/DC 13MM
DM S C3 CONTROLS 13SBLB120ST LED PILOT LIGHT BLUE 120VAC/DC 13MM
DM SLUMA PRO 250W T3 HALOGEN 120V 4RZZ9 250T3Q/S
MAUREY 40XL037MB PD STEEL TIMING BELT PULLY 40 TOOTH 3/8 BORE TWIN SCREWS
TORRINGTON CR-32 CAM FOLLOWER 2" ROLLER
DM SBROWNING 40B11 5/8 BORE KEYED 11 TOOTH 40 PITCH CHAIN
AIRMASTER NOVA ASSEMBLY FOR 18", 20", 24" 30" CAC NON-OSCILLATING FAN
SCHRADER BELLOWS .62" L2 ROD SEAL KIT 670208001
ALLEN BRADLEY RED ILLUMINATED PILOT LIGHT 24 VOLT AC/DC
DM SALLEN BRADLEY RED ILLUMINATED PILOT LIGHT 24 VOLT AC/DC
GRAINGER CLEAR IVERSAL THERMOSTAT COVER 3TZ57A
SKF RADIAL DEEP GROOVE BALL BEARING 6307 2RSJEM
DODGE 2012 X 1-9/16 KW TAPER-LOCK BUSHING
DM SDODGE TAPER LOCK BUSHING .8750" BORE 1.87" OD 1210x7/8 KW 117079
DM SGENUINE CISCO 72-2632-01 CAB-STACK-50CM REV B0 STACKWISE STACKING CABLE LOT
HOFFMAN CONTROLS ELECTRONIC HEAD PRESSURE CONTROLLER 460V MAX 10A BAYLOAM102A
TRI-TRONICS MULTI-MATE MULTI FCTION PROGRAMMABLE MODULE PM 8100 W/ BASE
ASCO 104R GENERAL PURPOSE VALVE
DM SROSS 200 PSI GAUGE 2" FACE 1/4" NPT BACK MOT 14 BAR GAUGE 5400A2011
DM SDM SROSS 200 PSI GAUGE 2" FACE 1/4" NPT BACK MOT 14 BAR GAUGE 5400A2011
SCHNEIDER ELECTRIC TELEMECANIQUE SQUARE D CONTACTOR 24 VDC 690V 10A CAD50BD
SWAGELOK SS-8-HCG 316 STAINLESS HEX COUPLING 1/2 " FNPT x 1/2” FNPT
DM SSWAGELOK SS-8-HCG 316 STAINLESS HEX COUPLING 1/2 " FNPT x 1/2” FNPT
DM SContinental ContiTech B38 or 5L410 V-belt 3/8 x 41in
SWAGELOK SS-810-1-12 MALE CONNECTOR 1/2" TUBE OD X 3/4" MALE NPT
CM 4X1305 LATCH KIT SIZE #5 PROFILE EYE HOOK 3YDF6
DM SCM 4X1305 LATCH KIT SIZE #5 PROFILE EYE HOOK 3YDF6
LDI INDUSTRIES LSP51-06 SIGHT PLUG GAGE 1" NPT 1U925
TOTAL SOURCE SY6320G1 CONNECTOR KIT 350A 600vdc GREY 2/0
DM SBURNDY GRODING CLAMPS GRC58 DIRECT BURIAL LOT OF 7
RITTAL SK3110000 TEMPERATURE REGULATOR 5-60ºC
RITTAL SK3110000 TEMPERATURE REGULATOR 5-60ºC
TRADELINE HONEYWELL VERSAGUARD IVERSAL THERMOSTAT GUARD TG510 B 1009
INTERLOGIX 1076D 17165GIC MAGNETIC DOOR CONTACT SET 6 WIRE 30VAC/DC
DM SSLOAN FLUSHOMETER STOP CAP H-1009-A 3/4"
SIEMENS 3RK1200-0CQ00-0AA3 COMPACT MODULE K60 DIGITAK 4DI
NSK DEEP GROOVE BALL BEARING 1.96" BORE 3.14" OD .62" WIDTH 6010VVC3
WESTINGHOUSE FH81 H81 OVERLOAD HEATER TYPE A SERIES F STYLE 179C319G11
DM SBECKHOFF KL9210 VOLTAGE SUPPLY TERMINAL 24VDC KL9210
DM SGENESIS G1RT-FIRE TRIM PLATE
DM STIMKEN NEEDLE ROLLER BEARING THRUST BEARING NTA-1625
DM SDM STIMKEN NEEDLE ROLLER BEARING THRUST BEARING NTA-1625
REPLACEMENT PROJECTOR LAMP V13H010L42 ELPLP42
DM S CHICAGO HARDWARE 4P806 ZINC EYE BOLT 3/8-16 X 2" SHANK OF 10
3/4" STAINLESS 304L SOCKET WELD HEAVY WALL ION SP-83 3000#
BREWER MACHINE GEAR IDLER SHAFT SO2
ALLEN BRADLEY 1771-KA2 COMMICATION ADAPTER MODULE
MRC DOUBLE ROW BALL BEARING 5203SBKFF
GE FANUC 5 SLOT BASE EMI ENHANCED IC693CHS397L
SKF DBL SEAL RADIAL BALL BEARING 30MM ID 72MM OD 19MM WIDE SKF6306-2RSJEM
SKF DBL SEAL RADIAL BALL BEARING 30MM ID 72MM OD 19MM WIDE SKF6306-2RSJEM
2)SKF BALL BEARING 30x62x16MM 6206 2ZJEM
-DODGE TAPER LOCK BUSHING 2012 X 1 3/4-KW 117094
AUBURN I-10-09 IGNITER SPARK PLUG FLAME ROD
SWAGELOK SS-1210-1-8 MALE STRAIGHT CONNECTOR 3/4" TUBE OD X 1/2" MALE NPT
OMRON TIMER H3CA-A 99.9s-9990 HOURS, 11-PIN 24-240VAC, 12-240VDC W/ H-DOWN
WARREN RUPP SANDPIPER / TDS VALVE BODY GASKET SET 360.048.425 2 PER PACK
WATTS FL100XL TEMPERATURE/PRESSURE RELIEF VALVE 3/4" PSI 150 SET
DM SHUBBELL SHC1023ZP PLATED STEEL CORD CONNECTOR 1/2" NPT HUB
EDWARDS EST FIRE ALARM ISOLATOR TRANSPONDER MODULE SIGA-IM
1DM S1/2" MALE STRAIGHT 1/2 X 1/2 NPT 10mm X R3/8 ELBOW 1/4 X 1/4 LOT OF 15