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
3Com 3C16970 SuperStack II Switch 100BASE-FX Module
3COM 3C93011 Super Stack II Switch 9300
3Com FAB 02-0287-002 REV-01 Ethernet Board
3com Super Stack II 3300XM 3C16985 24-port switch 90-240v 50/60Hz
3D Corporation TQS-C4E w/ Scratches
3DT 10031-37 TubeDyne Cath Corona Treating System Ø.25" x 2" Long Treatment 120V
3DT 30010-26 HV Transformer, 12000V 800W 120/240VAC for 10031-37 TubeDyne System
3M 350R DYNAPRO ET 350R Ser A Rev 1.0 115/230V Input Touch Screen System HMI
3m 722 Work Station Monitor
3M DSRC-MCTT-5.9GHZ V2I Vehicle-to-Infrastructure Module -
3x ROTA Engineering BL8 2BD, IECEx BAS09.0011X | BASEEFA09ATEX0038X INLINE PLUG
4 BAY SERVER BLD ASRock Rack EP2C621D16HM-AB Half-Width Srvr MoBo DDR4 Sckt 3647
4 Piece Set Catalytic Converter OBDIV For 2005-2014 Nissan Frontier SEE DESC
4 PK 5 x 150, 2"x110mm Pro Billet Wheel Spacer Set for 2007-2018 Toyota Tundra
4 PK5 x 150, 2"x110mm Pro Billet Wheel Spacer Set for 2007-2018 Toyota Tundra
4 product ratings- Adaptec AHA-2940W/2940UW AHA2940W/2940UW Ultra Wide SCSI PCI Card Module Board
4 product ratings- HP Agilent 1165A 10:1 Oscilloscope Probe C
4.5Gal Astri-L Formulated Liquid Detergent Cleaning Brushes of Astronaut Robotic
4000-0273-02 4000027302 Board
4011 Ver:8.0 H9MSUN6311 Parallel Port Card
4011 Ver:8.0H9MSUN6311 Parallel Port Card
4022-369-22804 402236922804 50Hz
4022-369-22804 402236922804 50Hz
409-2 4092 Product Counter Board
409-2 4092 Product Counter Board
45407-87680 4540787680 Tie Rod End
464909 0.5X Lens
468583 0.75X Lens
4752-4147 47524147 Plate, Pressure
477009C1 BRACKET ASSEMBLY FRONT SPRING REAR See Desc
47Pck Dirak 8mm x 33.5" Round Rods w/ Eye 911-0105.00-00000 Flat Eye Chanfered
4820A145-2K08 4820A1452K08 Hand Brake Cable
4820A146-2H06 4820A1462H06 Cable
49335-1 53128 Board
4Channel Stepper Filter 202-0234-004 2020234004 Board
4CT-10-A-20UB VICKERS 465198 VALVE 4CT-10A-20UB 4CT10A20UB
4CT-10-A-20UB Vickers 465198 Válvula 4CT-10A-20UB 4CT10A20UB
4CT-10-A-20UB Vickers 465198 Valvule 4CT-10A-20UB 4CT10A20UB
5/16" White Rubber Terminal Boot for Electrical Connection MS25171-2S
50' Gates 3/4"(19mm) ID Green Stripe HVAC Heater Hose 3269S
50' Roll of Cloth Inserted Silicon Rubber 36" Wide 3/32" Thick Orange Color
500 Count #14-13 X 7 DP1 Bi-Metal 304 Stainless Steel 7" Heavy Duty Screws
500ft Paige 180150 Low Volt 12awg/2C Lighting Cable
50mm 1:2.5 CCD Camera Lens
511-581-A 511581A CRT Control Board for Oscilloscope
511-581-A 511581A CRT Control Board for Oscilloscope
530-2453-02 Rev.50 1285 0043 Cable C
530-2453-02 Rev.50 1285 0044 Cable C
530-2453-02 Rev.50 8425 0041 Cable C
542089 POSI LIMITED-SLIP DIFFERENTIAL For FORD STERLING 10.25" 10.5" SEE DESC
569315-01 5693150
5920 Pressure Sensor 3 Business Days
5C24-9F805-BE 5C249F805BE Air Filter Housing Hose
5C24-9F805-BE 5C249F805BE Air Filter Housing Hose
5x RHEINTACHO 5823,200 Speed Monitor Redas for Marine 1SS1002
5x RHEINTACHO 5823.200 SPEED MONITOR ROTAS FOR MARINE 1SS1002
5x RHEINTACHO 5823.200 Velocidad Monitor Rotas Para Marina 1SS1002
5x RHEINTACHO 5823.200 Vitesse Moniteur Rotas Pour Marine 1SS1002
6 product ratings- Hewlett Packard 6632A System DC Power Supply 0-20v/0-5A ,100W AS IS
60' Maytronics Durable Blue Cable w/ Swivel for Dolphin Robot Pool Cleaners DX4
6000' TXL20-1 Automotive Wire 20 AWG
600-01-41476 Board
600-01-41476 Board
601R VER. E P/N: 91060209 1192054B Board
602B 601B VER. E Circuit Board
602N 601 N 601N VER.H Board
63102 A REV.B 63102AREVB Circuit Board
63102JK REV A Circuit Board
63102L VER. B 91631022 Circuit Board
63A 50/60Hz
64-21052C 6421052C 03-21052/D 0321052D Board
650-4649-02 Rev.B 650464902RevB IF,MUX
650-4649-02 Rev.B 650464902RevB IF,MUX
6510-0010 65100010 Cable
6510-0010 65100010 Cable
660 Bearing Bronze Stock Rectangle Oversize Flat Bar 1-1/2"x 2-1/2"x 44"L 59lbs
660 Bearing Bronze Stock Rectangle Oversize Flat Bar 1-1/2"x 2-1/2"x 36"L 47lbs
660 Bearing Bronze Stock Rectangle Oversize Flat Bar 1-1/2"x 2-1/2"x 35"L 48lbs
660 Bronze Stock Rectangle Oversize Flat Bar 1-1/2"x 2-1/2"x 36-3/8"L 48lbs
67519 AME Inter. Nose Extension 1"Drive x18" For Torque Wrench 67510/67520/67530
68 product ratings- HP CB540A Color laserjet Black Print Cartridge
6DCT250 DPS6 Auto. Transmission LUK Clutch 602000899 For2011+ FORD FOCUS 6-SPEED
6DR5310-0NG00-0AA0 Siemens 6DR53100NG000AA0 Positioner Valve
6DR5310-0NG00-0AA0 SIEMENS 6DR53100NG000AA0 VALVE POSITIONER
7 product ratings- D-Link DES-1024D
7 product ratings- Siemens Simatic 505-6660 5056660 Power Supply Unit w/ Some Rust
7.2M (24') of Bell/Lid Gasket Square for TM-1000 TM-1500 Vacuum Sealer 3114474
7000-1752 70001752 36GB Disk Drive
7000-1752 70001752 36GB Disk Drive
701-075 B-11632R 221-144.26
7112488A1 Seat Ring, 440C, Bore 0.675 Use W/7131547A1 Cv 2.97
72511 360 72511360
7322 073 61951 7322 073 5871 42 90 11383 Back Panel Board
7322 073 61951 7322 073 5871 42 90 11383 Back Panel Board
744-124 744-125 744-126
75' Parker 201-8 200 - 3000psi 201 Liquid Braided Steel Fiber Hydraulic Hose
77153-221-03 7715322103 Board
77153-221-03 7715322103 Board
7ea Phillips 15-830 & 4ea J560 7Pin Plug w/Cable 1ea 15-720 1ea 45' Cable 10 Pin
7th Continent Rookie survivor Gameplay Bundle english version 8 expansions
8 product ratings- ALLEN BRADLEY 1769-OW16 COMPACT I/O RELAY OUTPUT MODULE F/W 3.1 SER A
8/2003 82003 Output Adaptor Card ver. 3.0
802-00099 REV D 80200099REVD Controller
802-00099 REV D 80200099REVD Controller
80-270/300-40 Cone Drive Brass Worm Gear Set 40 Tooth 8" Center Distance
815EPDA Motherboard
815EPDA Motherboard
84000-60451-B 8400060451B
84000-60451-B 8400060451B
873.0940/04 873094004 873.9685/03 873968503 Board
873.0950/06 873.9695/01 Circuit Board
8x SALWICO IC10 CONSILIUM 5200272-00A ADDRESS UNIT
90R-01309/625 53200-81A11 Shoe Set Brake
911 Circuits CH27 Fuse Box and Wiring Harness Unicor
911 GT3 CUP TYPE 991 Idler Gear 5th Ricardo 991.302.505.6F
914A538 Detroit Truetrac Limited Slip Differential GMC Sierra 3500 2012 9.5”
914A538 Detroit Truetrac Limited Slip DifferentialGMC Sierra 35002012 9.5”
92-005173-OX EISA Module - Good Condition /
9364-0176 93640176 Repair Kit For Clutch Booster
9500-0378 95000378 36GB Disk Drive
9500-0378 95000378 36GB Disk Drive
954 Bronze Stock Rectangle Oversize Flat Bar 1-1/4"x 2-1/2"x 48"L 44lbs
9700-0361 REV E2 97000361 Cable
9700-0361 REV E2 97000361 Cable
99167SOCDNB5915506, V9730220 Aviation Airplane Cable
9WN H+2 ZZ K128+0.2 Linear Block w/ Linear Rail
9WN H+2 ZZ K128+0.2 Linear Block w/ Linear Rail
9WN H+2 ZZ K128+0.9 Linear Block w/ Linear Rail
9WN H+2 ZZ K128+0.9 Linear Block w/ Linear Rail
9WN H+2 ZZ K128-2 Linear Block w/ Linear Rail