福建中立恒自动化设备有限公司

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。

以下链接皆有货

500ft Spiral Wrap Plastic Tubing 0.079" ID 9330-01-201-0658

500pcs Emerson Horizontal Test Jack 5A White 105-0751-001 for .080 dia Tip Plug

500-pcs Freudenberg 70 EPDM O-Rings 82.22mm x 2.620mm 0049009043

500pk Nicomatic 0LH22 Latched Reversible Crimpflex Housing

500pk Promo Keys 1069518 SW15 Acero

50H 1 x 10Ft Chain

50-Pack 7ft CAT 6 Patch Cord Cable 24 AWG 550 MHz Gigabit Ethernet

50-pack Alligator V2B Double Seal Flow Through Valve Cap

50-pack Black Rigid Plastic Vertical 2-Sided Multi Card Badge Holder Y843339

50-pack Hermes RB 346 23 MX SK 6" Sanding Discs 60-Grit

50-pack iSi SparkWhip Whipped Cream Chargers 7.5g for Cream Whippers

50-pack Lasco D109-020 2" Male Adapter HUB x MIPT PVC

50-Pack Phoenix Contact PCB Terminal Blocks 3008402276 / BM011272

50pk Allflex ATAGF14 Numbered Feedlot Cattle Tags White 3"x4-1/4"

50pk Bussman LP204406 Magnum LP2 Series Barrier Strip Terminal Block

50pk Carquest STP178 STP 178 Slide Terminals 12-10 GA

50-pk Cloos 0062 12 31 11 Current Tip 1.14mm M8 Cyl CUCRZR 32

50pk Corning MTP Housing Assembly Green 14382

50-pk Eaton 38MCQ 3/8" Double Snap Box Connector

50pk Eaton Crouse Hinds K75CM Cover Plate 3/4" Form 5

50-pk FLRY-B 46" Cable w/ Male Pin End & Copper Wire End GM2803 / 510012007006

50-pk FLRY-B Cable w/ Male Pin End & Female Slide Terminal End GM2802

50-pk FLRY-B Cable w/ Slide Terminal End & Copper Wire End GM2804 / 510012007007

50pk Holdrite Rapid Clamp Model 251

50pk Hubbell 1214 1" Conduit Bushing w/ Ground Lug Malleable Iron Zinc Plated

50pk Lighttimetunnel Assortment of Oscillating Saw Blades for Wood Metal Plastic

50-pk Phoenix Contact 3008668041 Terminal Blocks IEC 60947-7-1 600V 20A

50pk Raco 4" Box Cover Raised Single Gang 90cm³ 5.5 Cu In

50pk Wieland 25.602.2853.0 8-Way PCB Pluggable Terminal 8142 OB Series 300V

50-pk YG Turning Negative Insert TNMG160408-UM YG3020 TNMG332-UM 22000283

550-pieces Huck Self Tapping Screws 1/4" x 3/4" Long 3/8" Hex Head

56-Egg Digital Incubator Humidity & Temperature Control Automatic Turning

573G Local Alarm Unit Holdup 38-000136-A

5-Button Key FOB Remote w/ Key for 2011-13 Jeep Grand Cherokee FBK020PROX

5-Button Smart Proximity Key Fob w/ Uncut Key M3N-A2C93142600 for Ford

5-Gallon Binks 29-249 Booth Coat White Water Base Strippable Coating

5-Gallon Duraamen CP1000 Premium Acrylic Primer / Activator Interior Exterior

5-Gallon Easiway Systems On Press Wash Screen Printing 93753

5-gallon Fuchs Ecocool Global 1000 Water Miscible Cutting & Grinding Fluid

5-Gallon Hercules Cryo-Tek 35260 Antifreeze Corrosion Resistant

5-Gallon Industrial Chem Labs Sewer Cleaner Extra Heavy Duty Drain Opener

5-gallon Kretus Top Shelf Epoxy Part A A-Resin Light Gray EX-KTSARLG-05

5-Gallon Laticrete Blue 92 Anti-Fracture Membrane Liquid  (no fabric)

5-gallon Radnor Anti Splatter & Nozzle Shield 1630 Water Based 64000114

5-Gallon SpecChem SC Cure 500 Concrete Curing Compound

5-Gallon Triax TRX1052 Powerflow MV ISO VG 46 Hydraulic Fluid

5-pack 805-120-533 Wire Connector

5-pack Appleton APPLB27SA 3/4" Aluminum FM7 Conduit Body

5-pack Aquatherm 0628238 2"x3/4"x3/4" Green Pipe Weld-In Saddle

5-pack Climax 2C-293 2-piece Clamping Collar 2-15/16" ID 4-1/4" OD 7/8" Wide

5-pack Hi

5-pack Hillman 851964 Square Corner Weldable Hinge

5-Pack Hotel King Size Flat Sheet 114" x 118" White ANNA/WHT/114X118/FLAT/RC

5-pack Nibco PresSystem PC604 3/4" Press x Male Adapter 9030950PC

5-pack Orbit 58197N Zinc Step Spike Base 1/2"

5-pack Partsmaster DY44701216 U Series Male Pipe Rigid 3/4" x 1" Fitting

5-Pack ProFlo PFC51U 6" 24ga Extension / Access Cover w/ Screw

5-pack Shoulder Screws MSB2-29 18-8 Stainless Steel 8mm x 8mm x M6X1mm

5-pack Siemens 6ES7 193-4CA20-0AA0 Simatic DP Terminal Module

5-Pack Sioux Chief 1/2" Type L Stub-Out Elbow

5-pack Tramec Sloan S378AB-6-8C 3/8"x 1/2" Hose End w/ Spring Guard

5-pack YSPCC-002 / 33075 Axle C-Clip for Chrysler 9.25" Rear .205" thick

5-piece Hertel 77426872 #1-#5 High Speed Steel Combo Drill & Countersink Set

5pk 2728 Ind Inter 20/30 Series Male 1/2"x1/2" Body x Thread Body x Pipe Fitting

5pk 3M Unitek 902-180 Victory Series Molar Band U 6 Left 40 485-005 068-893

5pk Applied 116784 Push to Connect 90° Elbow 3/8" Tube OD x 1/4" NPT Male

5pk Bridgeport 534-DC 1-1/2" Flex Conduit Screw In Coupling

5pk BritPart ERR2943 Head Bolt Set for Defender Discovery I II Range Rover P38

5pk DK Lok DMC 8M-6R-S Male Connector 8mm Tube OD x 3/8" PT

5pk Eaton FD45-1002-0606 / 2F621 3/8-18 Steel Hydraulic Coupler Nipple 3/8 Body

5-pk GPT Pikotek Strainer Flange Gasket 5019095 / 2-150LB-G10-N

5pk Grote Heavy Wall Cast Lug 84-9109

5pk Halex Flex 3/8" Saddle Connector 20670

5pk Imperial 91230 Air Brake Push-To-Connect Male Swivel Elbow Brass 1/4" x1/8"

5pk Imperial 91234 Air Brake Push-To-Connect Male Elbow Fitting Brass 3/8 x 3/8

5-pk J4-4BC 1/4-18 Male NPT to 7/16-20 Male JIC 37° Flare Straight Bulkhead

5pk Jones Stephens C74078LF 3/8" x 1/2" FIP 90° Brass Compression x Female Elbow

5-pk MasterWeld MW 23-62 Gas Nozzle Screw On 5/8" Suit TW3, 4

5pk Numark Shelving Adjustable Price Tag Callouts Price Display B2288

5-pk Phillips 12-95088 Composite Fitting Straight Union Push Lock 1/2" Tube

5pk Portals Plus Small Retrofit Pipe Flashing Neoprene 12015

5-pk STR60251C06 T-316 Stainless Steel Hex Socket Shoulder Bolt 5/16" Dia 3/8" L

5pk Tolco / Cooper B-Line In-Line Sway Brace Attachment 6" FIG 4L 6PLN

5-pk Weiler 13131 Roughneck Max 4" Stringer Head Wire Wheel .020 Steel Wire

6 Packs of 20 Magnets MasterVision FM1605 Magnetic Circles 3/4" Black

6 yards Veritable Wax Hollandais Cotton Printed Fabric

6" Wide 2" Channel Aluminum Above Ground Solar Panel Mounting Bracket 2-Bolt

60' Sponge Rubber Gasket 5/16" x 3/4" x LF 012302X

60-pieces Ferroxcube ER35/21/11-3C94 Ferrite Core ER 3C94

60-pk D.B. Roberts BSO M4-18 Hex Rivet Blind Hole Threaded Standoff

6-ft Angled 4 in 1 Cable 5-15P to 5-20R / 6-20R Yellow PC-0077

6-pack 589637606 SP 12mm Dry G 400 GQ400808 pad for Husqvarna

6-pack Callaway Supersoft Golf Balls with Pouch

6-pack Coiled Stainless Steel Slotted Straps 1/2" x 72"

6-pack Donaldson P550637 Power Steering Filter

6-pack Duracell 123 Lithium Battery DL123ABU Expires March 2030

6-pack Ilsco SK-1/0 CU 10 SOL- 1/0 STR Split Bolt Connector

6-pack Inland Fastener 300022 1/4" Pneumatic Sintered Bronze Muffler

6-pack TFP 80145 Blazemasters 1" Female Adapter

6-pack ZXYOO +1.00 Women's Oversized Reading Glasses Blue Light Blocking

6-pack ZXYOO +1.50 Women's Oversized Reading Glasses Blue Light Blocking

6-pack ZXYOO +1.75 Women's Oversized Reading Glasses Blue Light Blocking

6-pack ZXYOO +2.00 Women's Oversized Reading Glasses Blue Light Blocking

6-pack ZXYOO +2.50 Women's Oversized Reading Glasses Blue Light Blocking

6packs Harley Davidson Wheel Weights 5-gram 95595-84C Black 95594-84C Silver

6-Packs Hillman 127134 Metric Pan Phillips Machine Screws M6-1.00X16

6-pairs Amazon Basics Deadbolt Type Speaker Connection Banana Plugs

6pk Air Brake Push to Connect Elbow Fitting PTC Series DOT 369PTC-6-6 / PF-00058

6-pk Burndy GC3434 Mechanical Grounding Connector 300-500 kcmil Conductor Size

6pk Cummins Stem Guide 138937

6pk DK Lok 10CC-08-08 DIN Light Union

6-pk McDonald's 05096-042 Replacement 5" Grill Scraper Blades

6-pk Parker PF-00047 Push-to-Connect Tube to Tube Union Tee Fitting 364PTC-4

6-pk Premium Guard PG6290EX Extended Life Oil Filter for Jaguar Land Rover

6-pk ProLine 3/4" Brass Vacuum Breaker MPT x FPT 108-904

6-pk Size 3X Lakeland 51130-3X Pyrolon Chemical Resistant Hooded Coveralls

6-pk Sloan B-50-A Handle Repair Kit for B-32-A

6-rolls Fisherbrand 22-044150 Thermal Printer Paper

6-yds Veritable Wax Hollandais Cotton Block Printed Fabric

6yds Veritable Wax Hollandais Cotton Block Printed Fabric **

6yds Veritable Wax Hollandais Cotton Block Printed Fabric Black White

7 pcs Burndy 2-Hole Terminal Lug 4 STR N40 YA4CL-2TC14E2

7.3 IPR Valve Injector Pressure Regulator & ICP Control Sensor for Ford 1996-03

70pcs Power-Strut Pipe Clamps for 1" EMT / PS 1000 1 EG / 717631

72 pcs Elgin EOS-925PA / EOS-925PA100 Hi Temp 2-Ring Valve Stem Oil Seal

72pcs Fisher Finest 22-038-103 Premium Microscope Slides Clipped Corners

76025 HFO1234YF Lo Side Arctic Blast Adapter

7-pack Precision Auto Labs DG508 Ignition Coil for Ford 5.4L 2002-06

7-pieces Eagle Connecting Rods CRS-6125-BS0 / CRS6125BS0  (missing 1)

7-Pin Cable Assembly 8528500 / U2-16065 replaces 2918M Turck

7pk Roller Bearing Cage 19-5P25SP01 / 121359042716

80pk Standard Brass Valve Core .206-36