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。
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PSC-4400 V3.36 / MODEL 4400 NOAH CHILLER CONTROLLER / NOAH PRECISION
HTMODCON / PLANAR FXP CONTROLLER HT MODULE CONTROL / TRIKON
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C13107 /ASSY SPINDLE FERROFLUIDIC UPPER-SHAFT 52-131938C 02-106507-00/NOVELLUS
0010-09750C 0020-09357C / RF MATCH CVD PHASE IV, WITH TOP AMP MODULE / AMAT
0190-09085 /60EV, PNEU PCB WITH MANIFOLD /APPLIED MATERIALS AMAT
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20-000315-001 / PCB BOARD, 20-000315-001, 6292757 / APPLIED PRECISION
BGR-018822 / BOARD, VIO IFA / ADVANTEST
716-020323-001 / 1000901-0448-125780, 1001887, 714 026592 001,4043882-2104 / LAM
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AMC-02N4E03DK-50R01 / WAVEGUIDE AMC-9501G01 TRIAS CVD / NIHON KOSHUHA
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0200-02730 /INSULATOR, EXTERNAL, CERAMIC, 300MM HART / APPLIED MATERIALS AMAT
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796-046752-001/MAG POWER, ADIXEN TURBO MOLECULAR PUMP CONTROL IT/LAM RESEARCH
3336A11458,004247 / HP FAST PULSE CONVERTER / HEWLETT PACKARD HP
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0041-25378 / 300MM CHMABER LID ALD / APPLIED MATERIALS AMAT
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1000007855 / TOTAL AMINES ANALYZER, AMI, OBC, 120V,/ PARTICLE MEASURING SYSTEMS
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0190-34911 / YASAKAWA CONTROLLER ERCR-NS01-B004-E1 / APPLIED MATERIALS
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0200-35007 / DOME,UPPER, RP / APPLIED MATERIALS AMAT
1 0200-35007 / DOME,UPPER, RP / APPLIED MATERIALS AMAT
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3030-14337 /HORIBA-STEC-LF-210A-EVD-LIQUID-MFC-MASS-FLOW CNTRL, 0.05 G/MIN/ AMAT
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0200-03259 / RING SLOTTED PREHEAT 15 THK 300MM EP / APPLIED MATERIALS AMAT
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BG4-2035 / IPIF-III / CANON
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435716-0000-000 / HXP 200 C LIGHT SOURCE LQ-ME20 / LEISTGSELEKTRONIKGENA - LEJ
19-137359-00 / TREK ECS POWER SUPPLY MODEL 684-1-L-CE, 6 PHASE / NOVELLUS
205041 / INDEXER ASSY 200MM, M200 / AXCELIS TECHNOLOGIES
297-14295-1 / PCB INDEXER BOARD / BROOKS AUTOMATION
02-263840-00 / NOVELLUS ASSY, STAGE SINGLE HEATER 200MM / NOVELLUS SYSTEMS
123087300 / BELT TENSIONER ASSY / LAM
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4657448-0002 / FURNACE DIVISION, BTBS, KS 0073 T0761 / ASM AMERICA INC
770-773250-001 / ASSY, SWITCHER PS1 / KLA TENCOR
92-005346-0X / CPU 6220 6420 / KLA TENCOR
0210X-CA24-BJS1 / GATE SLIT VALVE / VAT
SYS68K / FORCE 30 R2 COMPUTER, 5907092, 5907048, CPU-30ZBE 58ED3960 / FORCE
0010-09476 / PUMP ASSY HEAT EXCHANGER FRANKLIN 1303232103, BURKS 10AT0056 / AMAT
CB4686-01 /PC104 CABINET CONTROLLER /TRIKON
26-8885-055 / KIT-ANNUAL PM RECIR G TT / LAM RESEARCH
INIX DS R MODEL 1015/ LUXTRON
1530A-12-0145_SA / 300MM TC WAFER SA WIRED 1530 TC K 12 P-6P / TENCOR
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0021-10588 /PLATE, INTERNAL PUMPIGN CHNL ASP, 150MM /APPLIED MATERIALS AMAT
10764-60010 / PCB, FAST PULSE CONVERTER / HP
0010-04542 / ASSY 200MM FC WXZPLUS OSCR 0040-04542 / APPLIED MATERIALS AMAT
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PS WX20N50.0Y69 HIGH VOLTAGE POWER SUPPLY, VISTA VISION / GLASSMAN HIGH VOLTAGE
716-330122-001 / PLATE, TOP BOLTED / LAM RESEARCH
3M10-150385-13 / SHIELD, BOTTOM, ESP... / TOKYO ELECTRON TEL
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0090-A4861 / CIB3 DR ASSY DIG. CONT / APPLIED MATERIALS AMAT
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