6GK7443-1EX20-0XE0通信处理器

6GK7443-1EX20-0XE0通信处理器

6GK7443-1EX20-0XE0通信处理器

6GK7443-1EX20-0XE0通信处理器

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。

PPECO 11110572 Buffer Curcuit Board From PPST SS-400 Induction Power Supply

Precise Technology 922793 Digital Probe Gage 1/8" Ball tip

Precision Brand Feeler Stock Thickness Gauge .028" .711mm Steel Gage 10pcs

Precision Marshall Steel Co. Super-7 S-7 Air Hardening Drill Rod 2" 2.00" X 36"

Precision Scientific DD-90 Dual Stage Rotary Vane Vacuum Pump 1/2 HP 1Ph

Prestolite 570-250-200 MTY-4001 36 Volt DC Electric Drive Motor Raymond Forklift

Prestolite 570-433-201 MJQ-4007 36 V DC Electric Drive Raymond Forklift Motor

Prestolite HB1UM3600 6R8594 DC Contactor 200A Amp 36V Volt Coil 15792-36

Prestolite JCA4002Y 36 Volt D.C. Contactor Raymond Forklift

Prestolite JCA4002Y 36 Volt DC Contactor From Raymond Pacer Model 60 Forklift

Prestolite MBD 4304 24VDC Electric Motor From Raymond Pacer Model 60 Forklift

Prestolite MTY4001 C 36 V DC Electric Drive Raymond Forklift Motor

Prestolite MTY4001RU 36 V DC Electric Drive Raymond Forklift Motor

Pride Abrasive Inc. A100V3BT Honing stones 100 Grit 3/8"x3/8"x8 Lot of 66

Prince A400160ABACAO7B SAE9416 Hydraulic Cylinder 4" Bore x 16" Stroke

Printco Industries 0705340607 Doctor Blade Assembly Printing Press Coater Tinter

Procon 101D100F11BD045 Brass Rotary Vane pump 3/8npt ports

Procon Standex 10268 Liquid Pump  Clamp On Style

Proflo PFLLSDCP Chrome Soap Holder dish Concealed Screw Cap NIB

Promatch A000000617 392709 Polyurethane O-Ring Seal Lot of 6pcs

Proteus industries 9WS2WRAE-001A Weldsaver flow control valve

Proto 5884 1in diameter 24in long Handle Sliding Bar

Proto 7332 1" 12-Point 1/2" Drive Deep Well SAE Socket

Proto C497 Adjustable Hook Spanner Wrench 2" Min. 4-3/4" Max

PRX KD224505 Dual Darlington transistor Module

PTD Precision Twist Drill 1-15/64" Morse Taper No.4MT Shank Drill Bit 14" OAL

PTD Precision Twist Drill 1-3/32" Morse Taper No.4MT Shank Drill Bit 13"OAL

PTD Precision Twist Drill 1-47/64" Morse Taper No.4MT Shank Drill Bit 17"OAL

PTD Precision Twist Drill 1-5/16" Morse Taper No.4MT Shank Drill Bit 14-3/4" OAL

PTD Precision Twist Drill 1-7/64" Morse Taper No.4MT Shank Drill Bit 13-1/4"OAL

PTD Precision Twist Drill 27/32" Morse Taper No.3MT Shank Drill Bit 11" OAL

PTD Precision Twist Drill 45/64" Morse Taper No.2MT Shank Drill Bit 9-3/4"OAL

PTD Precision Twist Drill 7/8" Morse Taper No.3MT Shank Drill Bit 10-3/4"OAL

PTI Technologies PG-025-GH Hydraulic Filter Element

PTI Technologies PG-025-HU Filter

PTI Technologies PG-030-GU Filter

PTI Technologies PG-050-GU Filter

PTR Precision Technologies P58200-6-22 Adaptor Center Ring 32-40 NIB

Pulsafeeder K3WTC1 Kopkit Electronic metering pump rebuild repair kit

Pulsatron LPH7EA-WTS3-XXX Chemical Metering Diaphragm Pump 240GPD 35PSI 115VAC

PulseStar Hetronic Crane Controller w/ Extra Battery & Charger

Pump Impeller 88.94 OD x 16.35mm Thick 12mm Bore Lot Of 2

Punch Press 90 Degree Bottom Die Setup V Block 11-7/8"L w/ 2 Clamps As Pictured

Punch Press Die Set/Shoe Back Post 6-1/2"W x 8-1/2" 6" Throat

Punch Press Die Set/Shoe Back Post 6-1/2"W x 8-1/4"FB 6" Throat

Punch Press Die Set/Shoe Rectangular Back 2 Post 5-5/8"W x 9-1/4"FB 6" Throat

Punch Press Die Set/Shoe Rectangular Back 2 Post 7-1/2" W 5" Throat

Pyrex Annular Edge Clear Sight Glass 6" Dia 3/4" Thick Circular

Pyrex Corning 3050 Graduated cylinder glass lab 10ML metric

Quatech SSEW-100D G Rev K3 Ethernet serial device server w/power supply

Quick Change Tapping Extension 1" Straight Shank TSM 51-007 Collet Adapter

Quincy Quality 21314 Temperature Gauge Range:20-125C

Quipp 1611-0806 S-23836 Pneumatic Air Cylinder 1-1/2" Bore 2"Stroke Clevis Mount

Quipp S-A00219-1 3478 Pneumatic Air Cylinder 1-1/2" Bore 7" Stroke

R2AD 1.5X4 Pneumatic Air Cylinder 1-1/2" Bore 4" Stroke Double Rod Plain End

Racine 778267 Bosch Rotary Vane Set 12 per Box 26mmx 8mmx 3mm

Raco 4" Octagon Box 2 1/8" Deep 3/4" Knockouts Lot of 12

Raco 72-C-16 4 11/16" Square Drawn Box Cover Raised 1 1/4" Lot of 5

RadiSYs EXM-18 Circuit Board I/O Module

RadiSYs EXM-MX Memory Module Hitachi Hard Disk DK227A-41

Radstar RHC-1000x45-4.0-1000E02 45 Deg Carbide Insert Chamfering Tool 1" Dia

Rahsol No 5 27mm/24mm Double Open End Metric Wrench 10-1/2" OAL Germany

Ramsey Silent Chain 1/2x3/4 1 Center Guide SC403 10'

Ranco G1-2642 Electric Thermostat Temperature Controller w/Capillary Probe

Rapidparts A000015704 268890 Lever Replacement Part

RAULAND-BORG 4015B 13 Watt Vintage Old School Amplifier 1 MIC Input

Rawl Bantam Plugs 7569 Size 8 10x7/8" Drill:3/16" Qty 100

Raymond 123000140002 Steel Conveyor Rollers 19" OAL Lot of 11

Raymond 154-006-337 L/1 Module Assembly

Raymond 154-008-724 Motion Control Box Handle Forklift Controller

Raymond 2 Spool Hydraulic Control Valve From Pacer Model 60 Forklift

Raymond 570-236/500 P90-4002 36V DC Electric Motor From Pacer Model 60 Forklift

Raymond 822-000-849-200 Hydraulic Cylinder for Forklift

Raymond 838-000-006/001 Display

Raymond Side shift Hydraulic Cylinder From Pacer Model 60 Forklift

Raymond Single Spool Hydraulic Control Valve From Pacer Model 60 Forklift

RAYMOND/PRESTOLITE 570-250-200 MTY4001 36Volt DC Electric Drive Motor 7/8" Shaft

Raytec Kleen Plus Disposable Water Filter Fits All 1/4" Lines

Raytheon Vintage Electronic Vacuum Tubes Lot of 13

Reactor Transformer 75A 3PH Fanuc CNC

Recreational components RV gravity fresh drinking water fill lockable cover

Red Dot 1/2" T Conduit Fitting Cast Aluminum

Red Lion BMK70000 Closed Base Mount Kit For CUB4 CUB5 & DT8 Counter Unit

Redington 1-2035 Model 20 Mechanical stroke counter 5 digit righthand top-coming

Reed Air 158366 Round Balancing Damper 10"Duct Dia. Galvanized Steel

Reed Air Products 160984 10" Dia Slide In Damper Manual Shutter Air Duct Heat

ReelCraft 4NA81 Industrial Hose Reel 1000psi 1/2"

ReelCraft 5440 OLP 1/4"x39' 300 PSI Spring Retracting Air/Water Hose Reel