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
Autotech DM7-A0P00-010 Programmable Resolver Decoder Encoder Digital Panel Meter
Autronica GLR-92A Paralela Interfaz Instrumento Tabla 7258-004.0002
AUTRONICA GLR-92A PARALLEL INTERFACE INSTRUMENT BOARD 7258-004.0002
Autronica GLR-92A Parallel Interface Instruments Plate 7258-004,0002
Autronica GLR-92A Parallèle Interface Instrument Board 7258-004.0002
AUTRONICA NKA-110 PREPROSESSING CIRCUIT FOR NK-110
AUTRONICA NKA-110 Preprosessing Circuit Pour NK-110
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AV Flexologic CC STANDAARD Standard Viscosity Controller
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Avaya 34528-01 Chassis w/ DSP2 12631-02 2x 11975-03 1x 700463904 1x 11975-06
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Avaya G450 G450MP80 Media Gateway 700407802, 1x MB450, 2x MM710B, 1x MM711 HV33
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Avaya Virtual Services Platform 8284XSQ AC Ethernet Switch EC8200A01-E6 GREAT
Avaya VSP 7024XLS 24-Port SFP+ Mngd Switch 1/10GBASE AL700001X-E6 w/7008XLS-MDA
Avdel Tool Part 07555-09201 0755509201 Spare Motor Casing
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AverMedia Aver Vision 280 P0A3 Document Camera U
Avery Dennison ALS204 Label Applicator 120/230VAC, 40m/min, 10-110mm Labels
Avery Dennison ALS206 Label Applicator 120/230VAC, 30m/min, 10-160mm Labels
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AVL 6260.19 control module AVL F-FEM-DIO Rev. 01
AVL 6260.29 Control Module Controller AVL BASE-FEM-CON
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Avon 20"OD x 11-1/2" ID Slewing Bearing W/78T Ring Gear
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Avtron AV485-N2S8YXXP000 Smartach III Encoder Severe Mill Duty 56C Left Output
Avtron AV685 N1E8484P000 Incremental Encoder Severe Duty 2048PPR 1-1/8" Bore
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AW LAKE CO.,B5A6HP25,INLINE VARIABLE FLOW METER 1-1/4 IN-1-1/2IN PORT 3500 PSIG
AWM 1015 E394337 Appliance Wiring Material
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Awoo AT-6510 AT6510 Industrial Terminal
Axe LXV404.99.00551 Model SC200 2-CHANNEL Universal Control - 100-240VAC
Axiom AX6145WB Processor S12614593C00210 AXIOM TECHNOLOGY
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Axiomtek SHB120 Rev. A3-RC Full-Size LGA-1155 CPU Card Industrial Motherboard
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Axle Surgeons 16" OAL Axle Spindle Replacement, 3-1/2" Diameter Comm Truck
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Axor MS140-10/20-N-000-1 Axor Minispeed 140 10A/20A 7VREF 26VDT
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AZBIL ARF100-ARF106AS00000 PAPERLESS RECORDER
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AZCO Corp #34488 Control Box For FG-110 Sur-Size Cut-To-Length Machine, 120VAC
AZCO Corp Control Box For FG-110/SP Sur-Size Cut-To-Length Machine, 120VAC
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AZCO Corp FG110 Sur-Size Cut-To-Length Assembly 120VAC, 30-90psi, 110mm Cut
AZCO Corp FG110/SP Sur-Size Assembly 120VAC, W/Static Neutralizer & Air Idler
AZCO Corp FG110/SP Sur-Size Cut-To-Length Assembly 120VAC 30-90psi, 110mm Cut
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AZCO Corp FG110/SP Sur-Size Cut-To-Length Assembly 120VAC, 90psi, 110mm Wide Cut
AZCO Corp FG110/SP Sur-Size Cut-To-Length Assembly 120VAC, W/Static Neutralizer
AZCO UP-40 Punch Assembly, 90psi/6bar, 40mm Diameter, 1/8"-27 NPT Ports, Bolt-On
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B & R Automation 3IF797.9-1 Communication Module PLC Interface
B & R Automation 7CP476-010.9 Processor Module, Rev F0, Class I, Missing Screws
B&R 0GH-DI425 DI425 System 2010 Digital Input Module 32-Channel 24VDC 10ms Delay
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B&R 3CP152.9 Rev C0 CP152 2005 PLC CPU/Processor RS232/422/485 64+256kB SRAM
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B&R 5PC720.1214-00 Rev. G0, B&R Operator Terminal
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B&R 7CP770.60-1 w/ 2pcs 7DM465.2
B&R 7CP770.60-1w/ 2pcs 7DM465.2
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B&R 8LSA44.DB060S200-3 Servo Motor, 1.8kW, 6,000RPM, 3Nm, 3PH 400V, 100mm Frame
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