AB 1756-L1/A 模块 全新原装

AB 1756-L1/A 模块 全新原装

AB 1756-L1/A 模块 全新原装

AB 1756-L1/A 模块 全新原装

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。

3/4" NPT Black Pipe Cap Class 3000 Forged Steel Sch 80 Lot of 6

3/4" NPT Female Cross Hydraulic Pipe Adapter Connector Plated Steel

3/4" x 2-1/2" OAL Boring Bar Insert Tool Holder Lot of 2

3/4"NPT Malleable Iron Galvanized Pipe 45deg Street Elbow Class 150 USA Lot-10

3/4"x.035 Band Saw Blade 11' 5" (137") Wood/Rubber Cutting 4 Teeth Per Inch

3/4-10 x 12" UNC Inch Hex Head Cap Screw Bolt Grade 307A Heavy Qty 14

3/4-16 Threaded 1 Piece Clamp Shaft Collar 1-1/2" OD

3/4x.035 Band Saw Blade 14' 6" (174") Bandsaw Metal Cutting

3/8 Jic Male x 1 Jic Female 16x6 Jic Reducer Steel Straight

3/8" Flexible Metal Conduit 119' Continuous Roll

3/8" FNPT X FNPT Ball Valve Stainless Steel 2 Piece Lot of 2

3/8" Indexable solid carbide boring bar w/coolant through

3/8"NPT Malleable Iron Galvanized Pipe 90deg Street Elbow Lot of 12 Class 150

3/8"NPT X 5"Long Galvanized Pipe Nipple Sch 40 Lot of 19

3/8x1/8"NPT Malleable Iron Black Pipe Reducer USA Class 150 Lot of 10

30' 14ga Shielded Cable 6 Conductor Wire W/Ground

302:1 Ratio 5.8RPM Large Combo Worm Spur Gear Box Speed Reducer Iron Case 132lb

30H100 30 Tooth 1/2" Pitch Timing Belt Pulley 35mm Bore 26mm wide

3-1/2" OD x 18" conveyor roller w/3/8-16 threaded ends

316L Stainless Steel Adapter Fitting 1.5" Tri-Clamp x 1.5" Threaded Bevel Seat

3201234 Drum Brake Forklift Backer Assembly Plate

32A100I8VBE 1-1/2x1x1-1/4" Grinding Wheel Recessed 5/8x1/2" K1151338-0 Lot of 3

32H100 32 Tooth 1/2" Pitch Timing Belt Pulley 35mm 5-1/4" OD

33.5-D 22-75-90 Hydraulic Pump W/Motor Adapter Bell

33/64 Chucking Reamer 1MT Shank 6pt Straight Flute 8" OAL High Speed Steel

34" Hood Stainless Steel Fume Exhaust Hood Vent Vacuum

34A-27-00080 2-pc Rim 9x4.00E Steel forklift wheel

3535 45mm Taper Lock Bushing

35MB120A NL-35MB120A Bridge Rectifier Lot of 6pcs

36065 1-1/4" square drawbar trailer hitch 5" rise

37° Flare Jic 1/4 Male x 3/4" Female Steel Adapter Hydraulic Fitting

37° Flare Jic 1/4 Male x 5/8" Female Steel Adapter Hydraulic Fitting

373095 Motor Coupling Hub 14" OD 2-5/8" Keyed Bore Flange Mount

38mm 1.5" Stainless Steel Sanitary 3-Pos Butterfly Weld Valve Food Grade 1-1/2"

39 MM 30 Degree Open End Service Wrench 2002 WSP 5/16" Thick 8" OAL

393.14-25 140 430E Rotating Holder Collet Sz 25 14-13mm

3M 471 1" RED Vinyl Tape 1" x 36 Yards Lot of 28 Rolls

3M 577F 1/2x72" 60YF Grit Film-Lok Sanding Belts Box of 250 Belts

3M 577F 50 Grit 6"x186" YF Backed Sanding Belt/ 10 Per Lot

3M Scotch-Brite EK44346 12x6-1/2" Metal Finishing/Polishing Wheel Grade 5A

3M scotchcast electrical insulating resin 4 unipak container size C 14.7 Oz

3M SPEEDGLAS 420302 FlexView Protective Lens Cover 9 Pack

3-Ply Black Nylon Top Rubber Core Conveyor Belt 30"x60"x0.175" Thick

3-Ply Black Rubber Rough Top Incline Conveyor Belt 35-1/8" Wide 60" Long (5')

3-Ply Black Rubber Rough Top Incline Conveyor Belt 51"W x 60" Long 9/32" Thick

3-Ply Cloth Fiber Woven Conveyor Belt 2-3/16" Wide 74' Long 0.16" Thick

3-Ply Orange Rubber Core Fabric Top Conveyor Belt 16" W x 84"L 0.100" Thick

3-Ply Rough Top Incline Conveyor Belt 2-3/8" Wide 19' Long .28" Thick Red Rubber

3-Ply White Rubber Horizontal V-Ribbed Conveyor Belt 12" Wide 84" Long 1/4"Thick

3-Ply White Rubber Rough Top Conveyor Belt 12" Wide 72" Long 0.138" Thick

3X7" Blank Electro-galvanized Steel Tag For Embossing 0.08" W/Two 1/4"Hole Qty50

4 1/4" Scroll 3 Jaw Lathe Chuck Plain Back 1" thru hole

4 Ply Black Rubber Rough Top Incline Conveyor Belt 18Ft X 11-7/8" 3/8" Thick

4 Ply Black Smooth Top Conveyor Belt 9Ft X 12" 0.250" Thick

4 Port Aluminum Manifold Block (2) 1/2" NPT Inlet 3/8" NPT Outlet

4 Position Rotary Slector Switch From Hyundia HIT-15S Lathe

4" Conduit Lock Nut Malleable Iron Zinc Plated

4" inch X 6-1/2" sintered Bronze Rod 20LBS

4" Octagon Round Box Cover Raised 1/2" 3/4" Knockout Galvanized Steel Lot of 10

4" rubber swivel casters 5" load height

4" Steel Conduit Locking Nut, Mix Of Manufacturers Lot Of 54

4000 Lb. Rated Lifting Beam 51" Long For use W/Chain Spredder Bar

40-24 24 Tooth #40 Roller Chain Sprocket 3/4" Bore 4"OD

4-1/2" RV Slideout Roller Black Adjustable W/Bracket

4303BY.20967 Spindle 3000 RPM Reversible CAT30 Cat 30

45V2120E 4-Groove Pulley Sheave 5V V-Belt QD E Bushing 21.2" OD Spoked

4PGC1 PVC Ball Valve, Union, Socket

4-Ply Black Nylon/Fabric Top Rubber Core Conveyor Belt 13-3/8" Wide 28' Long

4-Ply Rubber/Nylon Orange Conveyor Belt 40" Wide 84" Length 1/8" Thick

4-Tier Adjustable Shelf Wire Frame Shelving Tray Rack Display Stand23x30x17"

4-Tier Adjustable Shelf Wire Frame Tray Rack Display Stand 23x30x17" Black

5" Jaw Machnics Bench Vise Opens to 3" Swivel Base

5/16" Flexible Metal Conduit 185' Continuous Roll

5/16x2-1/2" Cotter Pin Steel Zinc Plated Lot of 28

5/8" Pipe Tube Clamp W/Bolts Weld Mount Lot of 13

5/8"Wedge Socket for 5/8"Cable Wire Rope W/Clevis for 1-1/4" Pin No Wedge

5/8-11x11/2" UNC Socket Head Cap Screw Bolt Alloy Steel Lot of 50

5-1/8x315" Syle 4940 SLI PTFE Baghouse Filter Triple Sewn Fabric Good Quality

52-3456A 16" Valve Disc 17-7/16" OD 0.900 ID. Cast Iron

531-160586 3621-22 Grinding Wheel Adapter 5/8" Width 1-1/4" Bore 4-1/8" OAL

56392001 Rev B Nilfisk-Advance Circuit Board PCP

56410080 Rev. A Nilfisk Advance Model 2042 Operator Control Panel Circuit Board

57508 3/4"Cable Wedge Socket Wire Rope Clevis Cable Clamp Crane Winch

58 MM 30 Degree Open End Service Wrench 4002-WSP 1/4" Thick 9-1/2" OAL

5ft Grade 80 4leg 4Sling Hooks 31200lb WWL Chain Sling 1/2in Chain CM Herc Allo

5WXG8 SB-1C-6 Medical Cylinder Trolley 2-Wheel Steel Oxygen Tank Hand Cart 38"

6 4 2BSDS Bushed pulley 2 groove 6-3/4"OD w/SDS1-3/8" bushing

6 Lug Forklift Rim Wheel 11.75"x6", 11-3/4x6-1/4"