福建中立恒自动化设备有限公司

目前，世界上有200多个厂家生产可编程序控制器产品，厂家有德国的西门子，美国的Rockwell(AB)、通用(GE),日本的三菱、欧姆龙，法国的施耐德等。

可编程序控制器总的发展趋势是向高集成度、小体积、大容量、高速度、易使用、高性能方向发展。具体表现在以下几个方面：

(1)向小型化、专用化、低成本方向发展

20世纪80年代初，小型PLC在价格上还高于小系统用的继电器控制装置。随着微电子技术的发展，新型器件大幅度的提高功能和降低价格，使PLC结构更为紧凑，功能不断增加，将原来大、中型PLC才有的功能移植到小型PLC上，如模拟量处理、数据通讯和复杂的功能指令等，但价格不断下降，真正成为继电器控制系统的替代产品。

(2)向大容量，高速度方向发展

大型PLC采用多微处理器系统，有的采用32位微处理器，可同时进行多任务操作，处理速度提高，特别是增强了过程控制和数据处理的功能。另外，存储容量大大增加。

(3)与计算机联系密切

从功能上看，PLC不仅能完成逻辑运算，且计算机的复杂运算功能在PLC中也进一步得到利用，从结构上看，计算机的硬件和技术越来越多地应用到PLC；从语言上看，PLC己不再是单纯用梯形图语言，而且可用多种语言编程，如类似计算机汇编语言的语句表，甚至可直接由计算机语言编程；在通讯方面，PLC与计算机可直接相连并进行信息传递。

(4)发展多样化

可编程序控制器发展的多样化体现在3个方面：产品类型、编程语言和应用领域。

(5)模块化

PLC的扩展模块发展迅速。功能明确化、专用化的复杂功能由专门模块来完成。主机仅仅通过通讯设备向模块发布命令和测试状态，这使得PLC的系统功能进一步增强，控制系统设计进一步简化。

(6)网络与通讯能力增强

计算机与PLC之间以及各个PLC之间的联网和通讯的能力不断增强，使用工业网络可以有效地节省资源、降低成本、提高系统可靠性和灵活性，致使网络的应用有普遍化的趋势。

(7)多样化与标准化

生产PLC产品的各厂家都在大力度地开发自己的新产品，以求占据市场的更大份额。因此产品向多样化方向发展，出现了欧、美、日多种流派。与此同时，为了推动技术标准化的进程。一些国际性组织，如国际电工委员会(IEC)不断为PLC的发展制定一些新的标准，如对各种类型的产品作一定的归纳或定义，或对PLC未来的发展制定一种方向或框架。

(8)工业软件发展迅速

与可编程序控制器硬件技术的发展相适应，工业软件的发展非常迅速，它使系统应用更加简单易行，大大方便了PLC系统的开发人员和操作使用人员。

可编程序控制器的输出信号类型可以是开关量、模拟量和数字量。输出单元从广义上分包含两部分：一是与被控设备相连接的接口电路，另一部分是输出的映像寄存器。

PLC运行时CPU从输入映像寄存器读取输入信息并进行处理，将处理结果放到输出映像寄存器。输出映像寄存器由输出点相对应的触发器组成，输出接口电路将其由弱电控制信号转换成现场需要的强电信号输出，以驱动电磁阀、接触器、指示灯等被控设备的执行元件。

以下链接皆有货

ITT - P/N: 667647-001-002- CWP150 - Diaphragm Valve -

ITT - P/N: 667647-001-001- CWP150 - Diaphragm Valve -

Saders - 1/4" Valve Body - LOT OF (9) -

Pall - P/N: MDA 4463 G8-H13 - Filter Housing

General Electric - P/N: PEDBGR-FDG -

Automation Devices - 6000.1 - Vibratory Feeder Controller - 120V

Bellofram - Type 1000 - I/P Transducer

Tri-Clover - Sanitary Fitting, 8" Tri-Clamp

Silic- O-Ring - 106" long, 0.312" diameter - LOT OF (2) -

ITT Grinnell - Diaphragm Valve Handwheel - LOT OF (2)

Allen-Bradley - Catalog 509-B0D - Ser. B - Size 1 - Motor Starter

Electroid 90 VDC - Brake/Clutch

Browning - P/N: 1VP60X7/8 - Belt Pulley -

Compaq - P/N: 327740-001 - Power Supply

ITT - Advantage, Pneumatic Actuator for a Diaphragm Valve

Square D - Class 8536 - Type A0 1 - Size 00 Starter - LOT OF (2)

Gruvlok 4" - FIG. 7074 - 114.3MM O.D - LOT OF (2) -

Zebra - LP-2844-Z - Thermal Label Printer

Hitachi - C2050 - Nickel Plated Connecting Link - LOT OF (19) -

RED LION CONTROLS - P/N: APLR0600

ITT-Advantage - 1771584-001-001 - Pneumatic Actuator for a Diaphragm Valve -

ITT - 007-4697-10000-00R - 3/4" Diaphragm Valve -

ITT - Pneumatic Actuator for a Diaphragm Valve - MAX PRESS 90 PSI

Omron - P/N: E3S-X3CB4 - Photoelectric Switch -

ITT - 3" Replacement Diaphragms -

Klöckner Bartelt - P/N: 500081-0005 - Circuit Board

Lovejoy - D6 - 44033 - iversal Joint -

Banner - OSBURS Photoelectric Scanning Head - w/Power Block - Model: OPBA5QD

Fluid Automation Systems - CH-1290 - Versoix Solenoid Valve - LOT OF (4)

GULTON - Thermal Printhead - P/N: SME 048-384-A - Resistance-745

GEA - P/N: 0007-2429-840-DD - O-Ring -

Yamada - P/N: 770736 - Teflon Valve Ball 20T - LOT OF (4) -

Forma Scientific - P/N: 285233 - Rev. 4 - Circuit Board

Worcester Controls - P/N: RK59-RT-RR - Valve Repair Kit -

Worcester Controls - 2" P/N: RK44-RT - Valve Repair Kit -

Worcester Controls - 2" P/N: RK44-PM - Valve Repair Kit -

Japan Servo - P/N: DME60B13-11 - D.C. Motor

Rexroth Corp. - PC No. P52935-2 - Pneumatic Exhaust Valve

Johnson Controls - P/N: T-4504 - Dual Thermostat -

Champ - Cylinder - O-Ring Kit, marked  Style - As Pictured -

Acro Associates - P/N: 951–24-L-21-24 - Pinch Valve -

TURCK - P/N: Ni25U-CK40-AP6X2-H1141 - Uprox Proximity Sensor -

Package Machinery - P/N: PC1502 - Circuit Board

Minarik Corp. - P/N: PCM21010A - Speed Control Drive

LEAD ELECTRIC - ES-32DC - Switch Sensor

Doboy - Wrapper Stainless Steel Pusher Clips - LOT OF (6)

Remington - P/N: 1-2035 - Coter Panel Mot -

ITB - P/N: MB541DDFS428 - Ball Bearing -

Triangle Package Machinery - P/N: 9079005LAG - Interface Board

Triangle Package Machinery - P/N: 90W8011AA - Interface Board

SCI Tech, Inc. - SSU V1.0 - Board W/ Gordos Crouzet C40AC

Control Pak - Assembled 50.1009 Rev. C - Circuit Board -

CAVRO - P/N: 723980 - Circuit Board

IEE - 1820X28V - Replacement Bulb -  OF (100) -

Honeywell - P/N: 30736389-503 - Gasket Kit -

Ladish / Tri-Clover brand - P/N: 87-08-073?? - Pump Rotor -

Bryant Control - PI00R - Feeder Control

Yamaha - P/N: KR4-M4251-100 - 3.6V - 700mAh - ABS Battery -

Tri-Clover - Sanitary Fitting Clamp - Five(5) - 1-1/2" With Rubber Gaskets

Bonney Forged Steel Tee B16 - 1-1/2" - LOT OF (2) -

Yokogawa - Chart #B956AXJ - Chart Paper - Lot of Ten (10) -

Pacific Scientific - P21NRXS-LNS-NS-03 - Powermax II Stepper Motor - LOT OF (2)

branded - 1-1/2" - Diaphragm Valve Body - 316L Stainless Steel

Datalux - P/N: TOGUW - Space Server Keyboard

Allen- Bradley - 1771-P7- B - Power Supply

TRERICE - Model #BX9140302M - 0/100F - Industrial Thermometer -

Pacific Scientific - P21NRXS-LNS-NS-03 - Powermax II Stepper Motor

Scintag - P/N: 20000071 - Circuit Board

MçGill - P/N: MCFE 16 - Cam Follower -

Micro Mo Electronic - P/N: 28425024C - 23/1 - 14:1 Micro Motor

MiniPlex - 16 I/O Logic Board Card - P/N:900677 -

Swagelok - P/N: SS-QC8-D-8PMK4 - Quick Connect -

Norton - Bear-Tex - 04442 - 3” - Surface Blending SCF Discs - Qty. (40) -

port Dalec - Model Q2061DCR7 - Digital Panel Meter

Zook Enterprises, Inc. - 6" Diameter Graphite Rupture Disk - 20 psig -

ITT - 2-1/2" Replacement Diaphragms Kit -

branded - DN50  GFEPDM - Replacement Diaphragms - LOT OF (3) -

SMC - P/N: VQ4000 - Pneumatic Manif Valve - LOT OF (2) -

IMC/Hansen - P/N: 237500-342 - size 23 - 5VDC - 6.6 OHM - Motor -

FESTO - P/N: ADV-20-10-A - Pneumatic Cylinder XMPD 20X10 E

Reliance Electric - VS Drive DC2 - Front Cover - LOT OF (2)

Small Parts - Rod Rod Stainless Steel - 7/32" Dia X 24" Long - Qty. 6 -

Small Parts - Rod Rod Stainless Steel - 5/32" Dia X 24" Long - Qty. 6 -

Tri-Clover - Centrifugal Pump Back Plate -

ITT - Mechanical Switch Open/Close IP 66 - Nema 4 -

Emerson Motion Control - P/N: I/O Simulator AXIMA 4000

Electronics Corp. - 4000 - Type 22DJ4 - Photoswitch Division Sensitivity

THOMSON - TWN-8 - Super Pillow Block - Linear Bearing - LOT OF (2)

Holland - P/N: 08-WCS-0303–S6- 60"- Stainless braided Hose

Dayton - P/N: 4Z827B - Motor Speed Control

Graphic Controls - P/N: 30744109 - Chart Paper - 100 Charts -

Pacific Scientific - P21NSXS-LSS-NS-06 - Powermax II Stepper Motor - LOT OF (2)

Sentron - P/N: 1000-001 - Probe/Sensor - Serial #42027

Valco Melton - P/N: 970XX091 -

Control Panel - Assy 6201650 - PWB 6201652-01 - Rev A

FYH - P/N: UC208 - Thermoplastic Flanged Moted Bearing -

Computer Technology Corp. - P/N: CDM-5200 - CRT Driver Module

Parker?? - K065-1033 - Solenoid Valve

W.S.Tyler - No. 40 - Standard Testing Sieve - 425 Micrometer

Accton - EtherHub-16s - Model: EN2041

Micro Motion - Model: 3100 A2AUE - Relay Module

Burkert - 2000 - NPT 3/4 - Valve

AMP - P/N: 57040-4 00 - 100ft, 28 AWG Stranded - Ribbon Cable -

Hoefer Scientific - P/N: TE50X - Transphor Power Lid

Systech - CCD-610 - Vision Camera

 · f/3.5 · Zoom · Standard

Zebra - P/N: 05049BK045 - Premium Wax Ribbon - 40mm x 450M - Qty: (6) -

Honeywell - 25mm - F/1.8 Lens -

 · Adaptall · f/1.8 · Fixed/Prime

Nickerson Machinery - Nickerson Nozzle, General Purpose, Model #NM3 -

Nickerson Machinery - Nickerson Nozzle, General Purpose, Model #KWD3C -

Alfa Laval Saders - DN20 - Valve Body -

ITT Dia-Flo - Diaphragm Valve Handwheel - LOT OF (2)

W.S.Tyler - No. 50 - Standard Testing Sieve - 300 Micrometer - Inches .0117

Rexarc - P/N: RXA-7201 - Regulator w/Check Valve

Cramer 635K - Hours Meter - LOT OF (2)

Browning - P/N: 40TB36 - Chain Sprocket -

IPTCI - BUC207-20G - 1-1/4" - FL-207 - 2-Bolt Pillow Block Bearing-

Racal-Datacom - Model: ALM 3223 Modem

Alfa Laval Saders - 1/4" Valve Body - LOT OF (2) -

Kodak Datashow System Projection Pad

MiniPlex - 32 Output Logic Board Card - P/N:900696 -

Magnetic Base - Her With Fine Adjustment -

Panavise - P/N: 2898068 - Vacuum Base

MçGill - P/N: MCFE 16 SB - Cam Follower -

Sony - Model XC-57 - CCD Video Camera Module

ALLEN-BRADLEY - Cat. #1785-MR - 4K Memory Module - Part #96650701 -

Green Labels - 4.5 X 2.5 - 1000 Per Roll - LOT OF (2) -

Cole Parmer - Model #8376-75 - Ph/mV Module for a 8376  8386 Series Recorder

Panasonic - P/N: FPO-C14RS-A - Ver. 2.3 - Control it

Worcester Controls - P/N: 30-RK39-R2 - Valve Repair Kit -

Flowserve - P/N: 00MK537 -