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。
以下链接皆有货
LEROY SOMER R-130B AUTOMATIC VOLTAGE REGULATOR-AVR
LEROY SOMER R130C / R 130 C AUTOMATIC VOLTAGE REGULATOR AVR
LEROY SOMER R130C / R 130 C Automatique Régulateur de Tension Avr
LEROY SOMER R130C / R 130C Automático Voltaje Regulador Avr
Leuze 50036281 Optical Data Transmitter Leuze DDLS 200/200.2-10
Leuze 621310 ECO Transmitter ET30-1050 Set + Leuze 624310 ECO Reciever ER30-1050
Leuze DDLS 200/120.1-60 Optical Ethernet Data Transmission 18-30V 2Mbit/s
Leuze DDLS 200/120.1-60-M12 Optical Ethernet M12 Data Transmission 18-30V
Leuze DDLS 200/120.2-60-M12 Optical Ethernet M12 Data Transmission 18-30V
Leuze Electronic MLC520R14-1200H 68012112 Safety Light Curtain Receiver 1200mm
Leuze LS 66 E Receiver Light Barrier
Leuze MA208i Ethernet TCP/IP Module Gateway Leuze 50112892 Un
Leuze MLC520T14-300G MLC520R14-300G Safety Light Curtain Transmitter & Receiver
Leuze MLD510-R4L Safety Light Curtain Receiver Transmitter Set 950mm
Leuze Rotoscan RS4.4/A1 Scanner Resolution 70/150mm Response 80ms adj. bus 40ms
Leuze SD2R30-750 SD2R30750 Safety Light Curtain Receiver
Leuze SD2T30-750 SD2T30750 Safety Light Curtain Transmitter
LeviFlow LFC-1C-PC Converter Single-Channel 24VDC 4-digit LCD 0.8 to 40 cSt
Leviton 460MF7W F Mechanical Disconnect 480V 3PH 60A Type 3R, 4X, 12K, IP67
Lewco 36"x 48" Roller Ball Transfer Conveyor Table 4" Ball Centers Adj Height
Lewco 42"x 10' Roller Ball Transfer Conveyor Table 3" Ball Centers Adj Height
Lewco 45"x 10' Roller Ball Transfer Conveyor Table 3" Ball Centers Adj Height
Lewco 45"x 84" Roller Ball Transfer Conveyor Table 3" Ball Centers Adj Height
Lexmark 41X2250 High Yield Return Program Maintenance Kit Fuser
Lexmark XM3150 Multifunction Laser Printer Copy Fax Scan 35S6830
Lextek Stainless Single Sided Steel Header For 2010-2019 Kawasaki Z1000SX
Leybold 35 LS Turbovac TMP-35LS Turbo Pump 40 KF for Trivac D 2,5 E
Leybold 93400959 Turbovac 361 Turbomolecular Pump A9300083
Leybold D25B Trivac Rotary Vane Vacuum Pump 29.5m³/H 3/4HP 115/208-230VAC 1-Ph
Leybold Heraeus S250C VAROVAC Rotary Vane Vacuum Pump, 250m³/H, 440VAC 3-Ph
Leybold Inficon 20088855 Control Board, for UL 200 Helium Leak Detector
Leybold Inficon 850-200-G1 IG3 TurboVac Vacuum Gauge Pump Controller
Leybold Inficon IG3 TurboVac Vacuum Gauge Pump Controller
Leybold Inficon UL 200 Loetselte 20088999, Controle Board Lotseite, Rev 1
Leybold NT-12 UL 200 Turbomolecular Frequency Converter Pump Controller, 115VAC
Leybold NT-12 UL 200 Turbomolecular Frequency Converter Pump Controller 20061635
Leybold NT-12 UL 200 Turbomolecular Frequency Converter Pump Controller 90-140V
Leybold NT-12 UL 200 Turbomolecular Frequency Converter Pump Controller 110VAC
Leybold SOGEVAC SV40 BI Single Stage Rotary Vane Vacuum Pump *For Parts*
Leybold Sogevac SV65B 960 412 Rotary Vane Vacuum Pump, 41.8CFM, 230/460VAC 3-Ph
Leybold SV16 BR2W 9550165 Vacuum Pump 200V 50/60Hz
Leybold TRIVAC D 16 B Vacuum Pump, 16m³/h 1x10-⁴mbar, 115/230VAC w/Filters
Leybold Trivac D8B 2-Stage Rotary Vane Vacuum Pump 6cfm 40gpm 1Hp 230/460V 3PH
Leybold-Heraeus G0800912-2 Rev D D.C. Power Supply
LFE 2000 E1-3700-1002 E137001002 Temperature Controller AS IS
LFE Mini PuP 2000 Temperature Controller
LG 6CR-8522B 3850H-1327E CD-ROM Drive C
LG 6CR-8522B 3850H-1327E CD-ROM DriveC
LG G6F-PP3D Line Drive 3Axis C
LG G6F-PP3D Line Drive 3AxisC
LG GMC-800 MEC Contactor IEC Motor Starter 840A 690V META 120V Coil
LG K7F-P0PA K7F-POPA Programmable Controller
LG K7M-DR40S K7MDR40S Programmable Logic Controller w/ Missing Cover
LG K7X-310H K7X310H PLC Controller w/o Faceplate
LG K7X-310H K7X310H PLC Controller w/o Faceplate
LG K7Y-301S K7Y301S Programmable Controller
LG Master-K K4B-6MS K4B6MS Base Unit
LG Master-K K4B-6MS K4B6MS Base Unit
LG Master-K K7Y-303H K7Y303H Programmable Controller
LG Master-K K7Y-303H K7Y303H Programmable Controller
LG Master-K30S K32PA-DRS K32PADRS PLC Base Unit
LG Master-K30S K32PA-DRS K32PADRS PLC Base Unit
LG Master-K60S K56PA-DRS K56PADRS PLC Base Unit w/ Missing Cover 220VAC
LG Master-K60S K56PA-DRS K56PADRS PLC Base Unit w/ Missing Cover 220VAC
LG Philips LM190E02 Display LCD Homag Monitor TNR 19" 52271 Un
Lg Philips Lm190e02 Lcd Display Homag Monitor Tnr 19" 52271 Un
Liaaen Helitron DC0018A Superviseur Carte
LIAAEN HELITRON DC0018A SUPERVISOR CARD
Liaaen Helitron DC0018A Supervisor Tarjeta
Lian-Li C07.35KR00.30 C0735KR0030 Circuit Board
Libra Tierra Satchel Handbag Made in Italy 13.5"x 9.5"x 5.5" Genuine Leather
LID Male to Female 25 pins Cable
Lida XMT-E9000 EMT-E9262 Controller
LIEBERT ACM45U ACCESS CONTROL PANEL133493G6 120/240V 1PH
Liebert EM-1 12-794446 Rev 4 02-180848-10 MRP103558 Rev 4 PL12 Transformer
Liebert EM-1 12-794446 Rev 4 02-81048-17 MRP188568 Rev 2 PL-19 Transformer
Liebert EM-1 12-794446 Rev 4 02-810848-17 MRP179919 Rev 2 PL-19 Transformer
Liebert EM-1 12-794446 Rev 4 02-810851-16 MPR105255 Rev-1 PL20 Transformer
Liebert EM-1 12-794446 Rev 4 02-810851-16 MPR105274 Rev-1 PL20 Transformer
Liebert GXT2 3000RT230 Power Supply w/o Front Cover
Liebherr Bonfiglioli Brake Shaft 5007337 A308 A310 A312 A900 ZW R308 R310
LIFELOC MODEL FC20 PROFESSIONAL BREATH ALCOHOL TESTER NO SOFTWARE DISC w/ CASE
LIFELOC MODEL FC20 PROFESSIONAL BREATH ALCOHOL TESTER UNIT ONLY
Lift S+MC12 Control Unit Lift EU-ESD023
Liftmaster 001D8059-1CC Main Control Board DC Pad Mount Commercial Swing
Liftmaster 001D9039-1CC DC Pad Mount Main Control Board Commercial Swing
Liftmaster 001D9039-1CC Main Control Board DC Pad Mount Commercial Swing
Liftmaster 001D9040-1CC Control Board K1D9040-1CC For LA400UL LA412UL LA500UL
Liftmaster Chamberlain 127A0071F Main Control Board Professional CRC 0x4724
Liftmaster Chamberlain 127A0169B Main Control Board 0x6EID
Liftmaster Professional 127A0273D Elite Control Board For RSL12V RSL12VH
Lightnin EK XJ-30 Clamp-Mount Tank Mixer Agitator .3Hp 1725 RPM 230/460V 3PH
Lightnin EKXJ-30 Clamp-Mount Drum Tank Mixer Agitator .3Hp 1725 RPM 230/460V 3PH
Lightnin EKXJ-33 Clamp-Mount Drum Tank Mixer Agitator .3Hp 1725 RPM 230/460V 3PH
Lightnin EKXJ-500 Clamp-Mount Tank Mixer Agitator 5Hp 1725 RPM 230/460V 3PH
Lightnin Electric Mixer Clamp-On Agitator Drive 1/2Hp 230/460V 37"x5" Impeller
Lightnin XJ-30 Clamp-Mount Tank Mixer Agitator .3Hp 1725 RPM 230/460V 3PH Motor
LILAAS LF120D-01-11 REV-B DOUBLE HANDLE CONTROL LEVER
LILAAS LF120D-01-27-REV-B THRUSTER DOUBLE FWD MULTIPURPOSE CONTROL LEVER
LILAAS LF70R-01-03 REV-C CONTROL LEVER
Lin Engineering 4218M-08PD-03RO 4218M08PD03RO Stepping Motor
Linak 311100+1015004A 3111001015004A Bed Actuator Cut Cable
Linak 311100+2005004C 3111002005004C Bed Actuator Cut Cable
Linak CB12-03-24 CB1200003A00327
Linak CB12-03-AT-24 CB1203AT24 w/ Breakage
Linak LA 32.KAS-200-24-005 IP 65 LA32KAS20024005 Actuator Cut Cable
Linak LA 32.KSM-200-24-305 LA32KSM20024305 Actuator w/ Dents and Cut Cable
Linak LA28.25S-100-24-001 IP 65 LA2825S10024001IP65 Actuator 29cm
Lincoln Electric 4R220 Wire Feeder Autodrive With Maxtrac Wire Drive System
Lincoln Electric AC Motor 100HP 1750RPM 230/460V 3Ph 405TC TEFC
Lincoln Electric NA-5R Interface Adapter Remote Controlled Auto DC ARC Welding
Lincoln Ford SYNC Development TDK 3.0 All-in-One Original System - FREE SHIP
Lincoln LN-9F Squirt Mig Welder Wire Feeder Control Feed 90VDC Motor
Lincoln Machine C16680 Hydraulic Cylinder 3-1/2" Bore 13-1/2" Stroke 1500 Psi.
Lincoln,LM20709BE,Motor FVFCCN6P1.5U64L 1-1/2Hp 1175RPM 460V Frame 184U
Lindberg Blue M BF51766A-1 Moldatherm Box Furnace 5.3L Cap 100-1100°C 120VAC 15A
Lindberg Blue M BF51766A-1 Moldatherm Box Furnace W/Alarm 100-1100°C 120VAC 15A
Lindberg Blue M CC-04I-P-B Inert Gas Mechanical Convection Oven 4.6CuFt, 208VAC
Lindberg Blue M G01305A Gravity Convection Oven, 40°C To 220°C, 2Cu Ft, 120VAC
Line Seiki CX-1000ZC CX1000ZC Rotary Encoder Pulse Ratio: 1000
Linear Block Guide Bearing w/ 62cm Linear Rail AS IS
LINEAR BUSHING,LHSS-MX30,HOUSING UNIT NOS
liner A66-13036-000 Wiring Harness
liner Drag Link Assembly 463.DS4695 1417303000 For 2009-2019 Cascadia
LINER MIRROR AERO PANA ANT TEX A22-65433-000
liner Steering Drag Link 14-18528-000
lining n = max 3500 rpm F = 2500 daN un
Link Belt PK-B22455H Pillow block roller bearing w/1 locking collar 3 7/16" bore
LINK BELT,MA5217,INNER RING NOS
Link Belt,P3U336,Pillow Block Bearing 2-1/4 INCH
Link Belt,PLB6848FR,Pillow Block Bearing Assembly 22217LBKC3 Bearing
LINK BELT,TB22463H,TAKE UP BEARING 3-15/16"