170A117357-D输入/输出板

170A117357-D输入/输出板

170A117357-D输入/输出板

170A117357-D输入/输出板

一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。

它采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令，并能通过数字式或模拟式的输入和输出，控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。在工业生产的各个领域，机械加工企业为了提高生产效率，采用机械化流水作业的方式，对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代，生产线承担的加工对象也随之改变，这就需要改变控制程序，使生产线的机械设备按新的工艺过程运行，而继电接触器控制器系统是采用固定接线，很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多，随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。

　　发展趋势：1.向高速度、大容量方向发展

　　为了提高PLC的处理能力，要求PLC具有的响应速度和更大的存储容量。目前，有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。

　　在存储容量方面，有的PLC可达几十兆字节。为了扩大存储容量，有的公司已使用了磁泡存储器或硬盘。

　　2.向超大型、超小型两个方向发展

　　当前中小型PLC比较多，为了适应市场的多种需要，今后PLC要向多品种方向发展，特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC，其使用32位微处理器，多CPU并行工作和大容量存储器，功能强。

Napa 1069 Gold Oil Filter

Napa 1816 Gold Hydraulic Filter

Napa 1826 Hydraulic Filter

Napa 613 Stick Hose Radiator Coolant 2" ID 3 Foot Length

Napa 813-1235 Steel Brake Line 5/16" OD 60" L 5/16" Fittings

NAPA IC18 Ignition Coil Replacement 12V

Napa NBH 632 FleetFlex Gold Coolant Stick Hose 1.5" ID 3' Length

Napa/GE 4419 Incandescent Sealed Beam Lamp 35W 12V PAR 46 Lot of 8

Nason SP-17B-30F Low Pressure Switch Snap action 1/4"NPT

NATIONAL 2-3/8 Morse Taper No.5MT Shank Drill Bit 16-1/2" OAL

National 473239 Oil Seal 1.875" ID 3" OD

National Detroit 2-23/64" Morse Taper No.4MT Shank Drill Bit 15" OAL

National MFG Size 212 1"Long 3/16" Eye Screw Eyes Steel/Zinc Plated Box of 100

National Scientific C4015-99 Amber Glass Shell Vial 8x40mm 1.25mL Box of 200

NCC Q1F-00005-311 Solid State Relay Module National Controls Corporation

Nemicon RFH1024-22-1M Optical Shaft Endcoder Has Some Shaft Fretting

Neo-Dyn 200P16C3 Internal Adjustment Pressure Switch 1/4"NPT Port

Neptune 002719 Series 560 to 568 Pump Spare Parts Rebuild Kit

Neptune 100078 Valve Ball Pump Repair replacement Part Lot of 4

Netsuren 30mm single open end metric wrench 12" OAL

 Holland 47135972 Filter OEM Element (Outer)

age Industries 5611844 CAM operated coupling insert type-F 1-1/4" MNPT

co 12B 1-3/8"&1-1/2"Wire Rope Sling Bottom Saddle & Corner Protector Lot of 4

comer TPG322 Carbide insert grade-NT5 Style 25764322 8 pcs

en CNC Fixed-Turning Valve Seat Cutting Tool Holder Cylinder Head

port Electronics MTX-J09 Thermocouple J transmitter -0to250°c

Nexen Horton Air Champ Hub 856100 599291 NIB

NFS1254A Phenolic Non-metal Spur Gear 12 Pitch 14.5 Deg Pressure Angle 54-Teeth

Niagra Cutter 35ZA-844 4" Side Mill Milling Cutter 1" Arbor 5/16" Wide

Nile RH20 Air Shot Hammer Pneumatic Tool

Nilfisk 61390600 GS83 & GB733 Industrial Vacuum Cleaner Main Filter Cotton

Nippon Chemi-Con 600442-31TS Capacitor 36DA 47000uF 50VDC 9745L 33 UCC +95 C

Nissan P5-9MH62 Forklift Engine K25 195533 Intake Manifold Assy 93G20-31030

No 40 Single Strand Stainless Steel M1 Attachment Roller Chain 10' Hollow Pin

MT Adaptor Collet For No.2 Magic Chuck Collis Bendix Modern 63921 USA

No.3MT Adaptor Collet For No.2 Magic Chuck Bendix Collis Modern 2-AA-3 USA

Nopak 3X5 E Pneumatic Air Cylinder 3" Bore 5" Stroke Clevis Mount Model

Nord SK92372AZDSH Right Angle Hollow Shaft Bevel Gearbox Speed Reducer 49.73:1

Nordson 1056358A DuraBlue L Glue Adhesive Melter Drive Motor 30:1 Ratio 55.3 RPM

Nordson 295971A 295971

Nordson 819078 & HMO 833 Hot Melt Hose 8ft Lengths Lot of 2

Nordson EFD MC4000 Micro Coat Lubrication System Control Unit

Norgren 12-020-0600 3/8" Straight Pneufit Connector Push-to-connect

Norgren 12-060-0700 1/2" OD Pneufit Push-in tube tee Fitting T

Norgren 12-425-0628 3/8 x 1/4 Male Connector Pneufit Straight Adaptor Fitting

Norgren 12-447-0628 3/8" OD tube x 1/4" NPT Pipe Pneufit Swivel Elbow Fitting

Norgren 3698-02 Filter

Norgren 714 02 Micro-Fog Lubricator Accessories Repair Seal Kit

Norgren D11-120-0010 Refrigerated Compressed Air Dryer 10 SCFM 115V

Norgren F55-201-LODA 1/4"npt Pneumatic Air Filter Dryer Service Indicator 250psi

Norgren F73G-2AN-AT1 Excelon 1/4" Pneumatic Air Line Filter Dryer 150psi Max

Norgren F74G-3AN-QD1 Pneumatic Air filter 3/8" NPT 250 PSI Max Lot of 2

Norgren F74H-4AD-QDO Excelon Oil Removing Coalescing Filter 1/2"npt

Norgren OVC25 2x5" Vacuum Cup Neoprene Oval

Norgren RLC01A-SAP-NA00 Pneumatic Air Cylinder 3/4" Bore 1" Stroke Spring Return

Norgren X3 0451 22 1/8" NPT 5/2 Mechanical Valve Roller Lever Spring Return

Norgren/Monnier B12-221-A3LA Pneumatic Air Filter Regulator Assembly 1/4" NPT

North Amercian Tool M36x2.0 6 flute bottom hand tap 6" OAL

Northman SWH-G02-C3-A120-20 4-Way 3-Position Spring Centered Directional Valve

Northman SWH-G03-C2-D24-20-LS Solenoid Operated Directional Valve 24VDC

Norton 2 x 1" Spirabond Sanding Drum 100 Grit Box of 50

Norton 3F1 5x1/2x 1 1/4" CB120-WBB-1/4 Cubic Boron Nitride Grinding Wheel NIB

Norton 3SG80-R22B80 12x3/4x5" Fluting Grinding Wheel 80 Grit Alundum

Norton 55A80-K8VHB Grinding Wheel 24"X.750 X 12.050 Hole. 80Grit Max 1910 RPM

Norton 57A60-K8VBE 4x1/2x1/2" Aluminum Oxide Dish Grinding Wheel 6210rpm Lot of5

Norton 57A60-K8VBE 7x1/4x1-1/4" Straight Grinding Wheel 3600 RPM Lot of 10

Norton 64616 14"X3"X1-1/4" Alundum General Purpose Grinding Wheel 1800 Max RPM

Norton 7X1 1/4x5/8 38A60-J8VBE Rec.6x5/8 3600 rpm Grinding Wheel

Norton CB120 WBB 1/4 5x1/2x1-1/4" 14FF1 CBN Grinding Wheel 120 Grit

NORTON K225 9"X11" Lighting Medalite Cloth Sanding Sheets P100 Grit Lot of 62

Norton R267 1 x 1" 80 Grit Spiraband Sandpaper Drum Sleeve Cloth Back Box of 100

Noshok 2.5" Pressure Gauge 600psi 1/4"npt NIB

NSK 7205CTRDULP4Y Super Precision Bearing

NSK Bearing H35 Bearing Block 1000mm Linear guide rail and 3 H35 bearing blocks

NSK LH25 18-1/4 Liner Guide Rail

NSK LY250465ELC2W01P53 465mm Linear Guide Rail w/2 LY25EL Bearing Pillow Blocks

NSK LY250477EL2W01P523 477mm Linear Guide Rail w/2 LY25EL Bearing Pillow Blocks

NSK W2001WF-10PY Ball Screw 20mm Dia 6mm Pitch 55mm Travel 9" OAL RH

NSK W2002WF-8PY Ball Screw 20mm Dia 8mm Pitch 170mm Travel 14" OAL RH

NSK W2002WF-9PY Ball Screw 20mm Dia 8mm Pitch 160mm Travel 13" OAL RH

Numatics 006-195B Mid Station Supply & Exhaust Block Manifold Double Z-Board

Numatics 01HA4-B Precision limit valve 3 way spring return push button 1/4" NPT

Numatics 071SS500K000030 Pneumatic Solenoid Valve 229/677 Manifold Block 120VAC

Numatics 11SAD4150 Solenoid Valve w/Manifold 150psi 120Volt

Numatics 139-329P Coil Solenoid 100-115/50 110/120/60

Numatics 152SS400M Pneumatic Solenoid Valve 150 psig