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。
103-0601// AMAT APPLIED 0021-26787 LIFT HOOP LLA OUTER, PRODUCER SE
202-0301 AMAT APPLIDE 0140-28036 APPLIED MATRIALS COMPONENTS
144-0401 AMAT APPLIED 0190-13625 PURCHASE SPEC. CTI OBIS HE 8 FLEXLINE FE
144-0401 AMAT APPLIED 0190-13626 PURCHASE SPEC. CTI OBIS HE 8 FLEXLINE ME
412-0401 HITRON ELECTRONICS CORPORATION HSU45-11A POWER SUPPLY
130-0601// AMAT APPLIED 0010-09051 ASSEMBLY, 125MM STORAGE
134-0503 AMAT APPLIED 0021-04248 HOOP LEFT EXTENDED 8/6 B101
P PROGRAMMABLE RF CONTROLLER
177-0301// AMAT APPLIED 0015-90053 VALVE, MODIFIED, LOW PRESS URE
319-0103// AMAT APPLIED 0190-00544 AMAT COMPONENT
130-0103 AMAT APPLIED 0010-39911 0100-09213 APPLIED MATRIALS COMPONENTS
129-0201 AMAT APPLIED 0100-90736 PWBA PWB SLOTTED OPTO
134-0503// AMAT APPLIED 0020-25226 OBS: HOOP, HTHU 8 HEATER
437-0101// MITSUBISHI HC-SFS103B AC SERVO MOTOR
346-0202 AMAT APPLIED 0020-34048 SUPPORT, BELLOWS
125-0302 AMAT APPLIED 0200-00177 INSERT RING, SILICON, 200MM FLAT
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316-0403 AMAT APPLIED 0021-22485 BLADE, 8 BUFFER HP, HTHU
320-0102 WHITMAN W117V-3H-F12M-X30014 VIDE SWITCH
319-0101 AMAT APPLIED 0020-25344 SHIELD ARRAY HEAT
323-0403 AMAT APPLIED 0010-40154 CABLE ASSEMBLY, RF MATCH, PRECLEAN
170-0401// DICON GP700M DICON GP700 GENERAL PURPOSE RIBEROPTIC SWITCH
116-0304 AMAT APPLIED 0200-00410 I-INSERT, GAS DISTRIBUTION
134-0504 AMAT APPLIED 0020-41026 LIFTER, 6" ORIENTER
125-0403// AMAT APPLIED 0021-09958 FOCUS RING BASE FLAT
316-0403 AMAT APPLIED 0021-22485 BLADE, 8 BUFFER HP, HTHU, RCF COMPATIB
336-0201// SEMES SEBA-014217 NEOPC
104-0401// AMAT APPLIED 0090-01277 CABLE ASSY, PRESSURE SENSOR, FA 300MM
166-0401//BROOKS AUTOMATION 001-3710-03 POWER SUPPLY
320-0102 AMAT APPLIED 3310-00282 APPLIED MATRIALS COMPONENTS
340-0401// AMAT APPLIED 0021-76028 BRKT,WTR/SMK PCB/OMS INTERFACE
129-0103 AMAT APPLIED 0100-35263 ASSY, PCB AC DIST
342-0101// AMAT APPLIED 0021-10134 SLEEVE, EXTENDED, IR TEMP SENSOR
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148-0701// AMAT APPLIED 0150-09709 CABLE ASSY SET GAS TO REMOTE 25'
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172-0101// SANSHA KTD-15 1/10AT CONTROLER
334-0101// DRESSLER HILIGHT 012PSVCO
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325-0101// AMAT APPLIED 3030-01910 100SCCM CL2 1/4 VCR MTL NC
325-0101// AMAT APPLIED 3030-01935 300SCCM SIH4 1/4 VCR MTL NC
116-0103// AMAT APPLIED 0200-09672 RING, CLAMPING,AL,200 MM ,1.38H,NOTCH,CE
428-0501// SMB 4AL-0190-120-0/X2Q MOTOR
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420-0401// HARMONIC FHA-25B-1911-KE150-SP SERVO ACTUATOR
420-0401// HARMONIC FHA-25B-6015-E150-SP SERVO ACTUATOR
323-0302// AMAT APPLIED 1120-00254 OPTICAL HOUSING ASSEMBLY,VERTICAL- RIGHT
320-0301 AMAT APPLIED 1270-01518 SW ABSOLUTE PRESSURE SWITCH MSG
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GT311-50336-1F-X489 SLIT VALVE ASIS
115-0301// ADTEC AM-300S-SI-T RF MATCHING IT
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177-0404 AMAT APPLIED 0050-24649 GAS LINE,CH 3,W/B,MFC,COH TI/TIN
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162-0201// AMAT APPLIED 0010-76000 wASSY ROBOT DRIVE
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176-0103 AMAT APPLIED 0050-18881 APPLIED MATRIALS COMPONENTS
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418-0202// YASKAWA USAREM-03DE2KX AC SERVO MOTOR
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429-0102// DENSO MSMA082T3U2 MOTOR
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147-0401// AMAT APPLIED 0150-35223 C/A,ROBOT CONTROL
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116-0204// AMAT APPLIED 0200-40204 COVER RING,200MM JMF NON-CONT/C'BORE
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322-0103// AMAT APPLIED 0090-70002 MOTOR ENCODER ASY ROBOT ROTATION
177-0401// AMAT APPLIED 0050-76965 HE LINE, TTF REGULATED CENTURA CMF
130-0101// AMAT APPLIED 0100-20038 PCB ASSEMBLY RELAY CONTROL BOARD
421-0301// SANYO DENKI P30B06040HXS8RM AC SERVO MOTOR
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