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。

Mean Well LRS-50-24 24VDC Single Output Switching Power Supply (RE15DM S

Telemecanique XVA-C03 / 31857 400mm Beacon Tube (OV11DM S

Parker 10643-10-8 5/8" JIC Swivel x 1/2" Hose Crimp Fitting (CL11DM S

IGUS Chainflex 503 E-Chain Package of (DM SVertical Separator (BL23DM S

Yale Hyster 505972532 Brake Switch (GR20DM S

SMC BM1-04 Lot of (DM S Bracket Moting Switch (BL14DM S

Smalley WH-125 Bag of 50 Spiral Retaining Rings (YE22DM S

Turck Bi 2-M12E-AP6X-H1141 Inductive Sensor 10-30VDC (BL202)

PBC Linear PSF1014-06 Flange Bearing Sleave 5/8" ID X 7/8" OD X 3/4" L (YE20DM S

Apex 49A-TX20 PKG of 5 T-20 TORX 1/4'' Hex Power Drive Bits

Jergens 10834 10-Pack .250 OD Steel Press Fit Plger 697830 (BK16DM S

Consolidated 61903-ZZ Single Row Ball Bearing (BL251)

McGill MR-16-N Bearing (BL250)

SMC Y40-T4 T-Type Coupler Bracket (GR14DM S

McGill CF 5/8-SB Cam Follower Lubri-Disc (BL21DM S

Ross 196FA1008 Flow Control Valve. 1/8" (GR20DM S

SMC D-M9N NPN Reed Switch 0.5 meter 3-wire (RE18DM S

3M 3762 Lot of (DM S  1" X 3" Hot Melt Adhesive (OV11DM S

Misumi HLN-R-12X1.75-A 4-Pack H1 Rimmed Hard 2-Piece Locking Nut 12mm (RE15DM S

SMC D-M9PVMAPC Auto Reed Switch PNP Sensor 3-Pin 1M (RE19DM S

Panametrics BCU-58-7W BNC to UHF Cable TCA0018-007

Martin 40BS14-1 #40 Chain 1'' Bore Finished Sprocket, 14 Teeth

Martin 35BS20-1 #35 Chain Finished Sprocket 20 teeth, 1'' Bore

Martin H1 MST Bushing for 1'' Shaft

Martin 40BS16-5/8 #40 Chain Finished Sprocket 5/8'' Bore, 16 Teeth

Murr 7700-A4001-U1C0100 7/8'' Mini 4-Pole Male Cable 1-Meter

Martin 4016 Coupling Half Sprocket

DM SMartin 4016 Coupling Half Sprocket

Kurt Hydraulics MPX-16-16 1'' Hose ID Crimp x 1'' NPT Male Swivel

TPC 84936 Mini Quick Connect 6FT (CBL120)

Metabo 656431000 6 Convex Flap Disc 7/8 Type 29 ZA60 (RE212)

Turck RFKP 461-3M MINIRECEPTACLE RKFP461-3M (RE111)

OEM 375-5M-15 Timing Belt 375mm Length 5mm Pitch 15mm Width 75 (CL23DM S

Belden Hirschmann 933 235-042 Sensor Cable (BL182)

KML SER206-20 Set Screw Locking Insert Bearing (BL271)

Browning HN35B13  Idler Sprocket 13 Teeth (YE187)

Compact Air Products BFHD34X3 Pneumatic Cylinder MS114 (CL100)

Fag KM10 Locknut (YE13DM S

Igus Chainfix CFX-38-1 Strain Relief Clamp 34-38mm (YE13DM S

THINBIT Carbide Inserts CN053249A (YE12DM S

Allen Bradley 889D-F4WEDM-2 ~ SER. B Cordset 4 Pin DC Micro Straight (BK101)

Bussmann KAA-B-300 Lot of (DM STRON Rectifier Fuses (BL11DM S

Allen Bradley 142-FB1C130 Lot of (DM SClass CC Ser. B Fuse Her (CL20DM S

Balluff BCC0H0A  Connector And Cable (YE13DM S

Eaton WMZT1C03 3A 10kA Type C SP UL489 BT  Circuit Breaker (RE10DM S

Telemecanique / SCHNEIDER XSZBC10  Sensor Bracket (RE11DM S

Bussmann Fusetron FRN-R-2 2A Lot of (DM S Fuse (RE11DM S

Bussmann Fusetron FRN-R-10 10A Lot of (DM S (RE11DM S

Bussmann Fusetron FRN-R-3 Lot of (DM S 3A Fuse (RE117)

Bussmann Fusetron FRN-R-1/2 Lot of (DM SFuses 1/2A (RE11DM S

DM SBussmann Fusetron FRN-R-1/2 Lot of (DM SFuses 1/2A (RE11DM S

BALDOR DODGE 119579 1108 X 20 mm TAPER LOCK BUSHING (YE13DM S

Thinbit Carbide Insert CN002471C (RE141)

DM SThinbit Carbide Insert CN002471C (RE141)

TPC WIRE TREX-ONICS 60929 3 METER MALE/FEMALE 5 PIN (CBL11DM S

TPC 84935 WIRE TREX-ONICS 3FT 4 PIN (CBL142)

Martin Sabertooth Sprocket 40BS12HT 1 (GR117)

Turck VBRS 4.4-2SKM3 U0117-1 Twin Jction Cord (GR13DM S

Fuji Electric TK-5-1NY  Overload Relay 9-13A (BL11DM S

Bussmann LPJ-2SP  Pack of (DM S LOW-PEAK (BL12DM S

Bussmann Fusetron FRN-R-1 1A  Fuse (BL13DM S

KQ2W12-99A Plug-In Elbow Fittings (YE13DM S

Siemens  Circuit Breaker 5SY42 MCB C5 (BL14DM S

Bussmann Fusetron FRN-R-3 1/2   250V Fuse (BL12DM S

Lambda Noise Filter MXB-1220-33 (GR1DM S

Pro SC-1 C Bur 11700 1/4" Shank (BL13DM S

SMC NCDMKB125-0100 Pneumatic Cylinder 1-1/4'' Bore , 1'' Stroke (RE14DM S

IFM Efector EVC014 4-Pole Male-Female 5-Meter Sensor Cable (YE23DM S

Bussmann Fusetron FRN-R-15 15A  Fuses (RE11DM S

TPC Micro Quick Connect 67408 Receptacle (YE1DM S

Banner 20325 Fiber Optic Split End Assembly BA1.53PMTA (YE112)

SMC VFD112Y-5MO-N07-X67A Solenoid Valve (BL13DM S

Clippard 7D-DM SCylinder (CL1DM S

Square D 9007 DO-15 Heavy Duty Position Switch -  (RE12DM S

SMC Pneumatic Cylinder Flange Mot Kit NCQ-F020 (BL18DM S

CKD SW-T0V  2-Wire Reed Switch / Sensor (YE18DM S

SMC ASS300 Safety Speed Control Valve 100psi (YE12DM S

Ashcroft 15W1005SH  Pressure Gauge (GR130)

Phoenix Contact PLC-BSC-23OUC/21-21 Base w/ 29-61-202 Relay (YE120)

SMC CQ2KB25-30DM Pneumatic Cylinder 25mm Bore, 30mm Stroke (RE17DM S

Kurt Hydraulics F-BSPX-8-6 1/2'' Hose ID Crimp x 3/8'' British 60° Cone

IGUS Chainflex403 E-Chain Package of (DM SVertical Seperator (CL191)

Edison Time-Delay Current Limiting RK1 LESK50 (CL11DM S

Bussmann Fustron FRS-R-50 Lot Of (DM SClass RKS Fuses (CL21DM S

Martin 40A24 Bore to Size Sprocket 24 teeth 5/8'' Bore (YE22DM S

Allen Bradley 73A06  Coil 110V (BL2DM S

SMC NCDMKB106-0200 Pneumatic Cylinder 1-1/16'' Bore , 2'' Stroke (RE14DM S

ABL Sursum 2E5UM Circuit Breaker 5 Amps (CL14DM S

Allen Bradley 889-F4AC-2 Bulletin QD Cordset 4-Pin 2 Meters (YE19DM S

Parker 1JC43-8-8 1/2" Female Swivel Seal-Lok x 1/2" Hose Creimp Fitting (CL380)

Dayco HY12-12MJPF 3/4" Hose X 3/4-14 JIS 30° Female Swivel Hydraulic Fitting

SMH 175-1/0 Gray SY6325G1 Battery Connector 175 Housing 1/0 Logs

DM SSMH 175-1/0 Gray SY6325G1 Battery Connector 175 Housing 1/0 Logs

Gould Shawmut Amp-Trap ATS-DE50R Dual Element Time Delay (CL11DM S

Pneumadyne AN-2 1/32 x 2" Air Nozzle Strayout (CL237)

Allen Bradley 1492-CE6 Package of 7  Terminal Blocks (YE22DM S

DM SAllen Bradley 1492-CE6 Package of 7  Terminal Blocks (YE22DM S

Turck GSF 34-2M/14.5/NPT  PowerReceptacle U-10015 (BL11DM S

MANN Filter W712 Oil/Lube Filter OEM (FL101)

BUSSMAN Low-Peak LPS-RK-40SP Dual-Element Time-Delay Fuse 600VAC/300VAC (CL11DM S

Parker M8MSC3/8R-316  Stainless 8MM to A-Lock Male Fitting (CL1DM S

Festo NAS-3/8-2A-ISO / 11310 Valve Base (CL267)

Lovejoy EC100 685144-56640  COUPLING 1/4" X 1/4" (BL13DM S

Siemens  5SJ4102-7HG40 2 Amp Type HSJ Circuit Breaker DIN Mot (BK142)

Allen Bradley 193-BSB30 Ser. B Overload Relay 2.0-3.0A w/ 193-BPM1 Adapter CL125

Allen Bradley 193-BSB22 Ser. B Overload Relay 1.5-2.3A w/ 193-BPM1 Adapter CL126

Allen Bradley 193-BSB12 Ser. B Overload Relay 0.8-1.2A w/ 193-BPM1 Adapter CL124

Sick BEP-2SMGEAKU4 Rotatable Swivel Mot for Sensors 2030510

Allen Bradley 1492-N3  of (50) Ser. A Jumpers (YE22DM S

Russtoll No.3744 Receptable Only 125-250V (CL130)

Festo NEBU-M8G4-K-5-LE4  Connecting Cable (CL307)

S Hydraulics 990-010-006 SERIES 1 T-10A VITON CARTRIDGE SEAL KIT (GR160)

S Hydraulics 990-016-006 SERIES 1 T-16A VITON CARTRIDGE SEAL KIT (GR15DM S

SMC ISE70-F02-43 Digital Display Pressure Switch Press ~ 0-1.0 MPa (RE10DM S

Bussmann / Fusetron FRN-R-40  Dual Element Time Delay 40A 250V (YE17DM S

OMCH LJ12A3-4-Z/BX 3-Wire Proximity Sensor NPN, 4mm Sense 1M

LDI FV103-A 3-Pack Breather Vent w/ 40 micron copper filler element

Still 0144922 Seal Kit Linde 144922

Festo GRLA-1/4-QS-8-RS-B One-Way Flow Control Valve 162968

Belknap RJE-22M 22mm Open Torque Wrench End

Belknap RYE-21M 21mm Open 6-Point Torque Wrench End

Festo GRLA-1/8-QS-8-RS-B One-Way Flow Control Valve 162966

Siemens 5ST3665-1HG 12-Pin Buss Bar (CL29DM S

DM SSiemens 5ST3665-1HG 12-Pin Buss Bar (CL29DM S

Martin 35BS16-5/8 Bored to Size Sprocket 0.6250 Bore 16 Teeth (CL261)

Bussmann Fusetron FRS-R-15 Lot of (DM S Dual Element Fuses 15 Amp 600V (CL130)

OU2-12962 MALE CONNECTOR (YE107)

Turck 4-wire Receptacle 3M Harness FK 4.4-0.3/14.5/NPT (YE111)

Bussmann Fusetron FRN-15 Lot of (DM S Duel Element Fuses (CL13DM S

DM SBussmann Fusetron FRN-15 Lot of (DM S Duel Element Fuses (CL13DM S

SMC D-J59WL Solid State Switch (YE137)

Parker 11343-4-6 Crimp Fitting 3/8 ID Hose x 1/4''-18 Metric (YE260)