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
Siemens Texas Instruments 505-7012 Simatic 505 Analog I/O Module 8-In / 4-Out
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Measurement Technology 8020-CE-RH Carrier Extender Right Hand 8020CERH LR36637
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Allen Bradley 1747-L30A SLC 500 PLC Processor Unit 30 I/O 1747L30A Control
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Burns Engineering 200A10A1C035 / LY006M02T11 Thermocouple Probe
Fuji Electric CDPB3NQX-12 Transformer Regulator DSR Compact FSD Drive EP-2106
Fisher-Rosemount 01984-4124-0002 Rev. L/B Isolated Discrete Termination Panel B
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Fanuc A20B-2902-0390/01A Servo Daughter Board Card A20B29020390 A350-2902-T394
Foxboro P0903QF I/A Series Fiber Optic Modem P0903QF Rev 0B IA Siebe Module OB
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Foxboro P0400SG I/A Series Control Processor Cable Assembly P0400-SG IA Invensys
Foxboro DM900WV Rev A FBM 10/15 I/A Series Termination Cable Assembly DIO DM900
LECO 770-423-F I/O Board MAC-400 Furnace Control 777-132-D1 PLC Card MAC400 PC
LECO 770-608-D SOL. Drive Board MAC-400 Furnace Control 777-610-E1 Card PLC PC
LECO DMA 777-148-C X-Y Plot Interface Board MAC-400 Furnace Control 777-149-C PC
LECO 775-910-C 65K Prom Board MAC-400 Furnace Control 777-130 PLC Card PC B PCB
LECO 777-012-A Data Select Board MAC-400 Furnace Control 777-013-C Card PLC PC B
AVED Display Technologies ADT-SHRP-LQ18 Board Card PLC Rev A
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Orion PWB-LP4 Rev 4 Screen Control Card Board PLC PCB M375384
RiS Rochester Instrument Systems 1058-586 Card AN-3148A Board Rev E Ametek
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Nortel NT6D80AA RLSE 15 MSDL Multi-Purpose Serial Data Link Northern NT
Nortel NTRB33AD RLSE 11 Northern Telecom NT Meridian Nortel FIJI Fiber Interface
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TURCK NI10-G18K-AP6X-30MM Inductive Proximity Sensor 4670597
Listing Tri-Tronics FE-A Econo-Eye Photoelectric Receiver Sensor FEA Tritronics NIB
Panel Meter 14P00236-0301 14P002360301
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EIS Execut09010 Transient Suppressor IRS Level A
NAPA G Filter 2135 Air Filter 542135 54-2135 Cartridge NIB
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Ashcroft 250-2382-B 6" Receiver Gauge 3-15 PSI Bronze Tube 1/4-NPT NIB
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GE Fanuc IC610CHS100A 5-Slot PLC Rack w/ Power Supply 115/230V
ADC Kentrox 78222 D-SERV DSU/CSU ETL Testing TelephEquipment
Liebert 02-797490-00 Revision 7 Control Board PLC Card PCB 0279749000 PC Circuit
Tridium Talon-NM2 Internal Modem Jace-403 Card Board JACE 4 Series
ACCURAY 3-064843-002 Process Interface Board PLC Module U64844-005 PRI ABB PC B
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MATSUSHITA NAiS UZU2102 UZU Pressure Sensor Switch UZU2 2102
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