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。
EBERLINE 10614-02 STABALIZER BOARD 1061402
EBERLINE 11392-D02 PC BOARD REV. E SP14A 11392D02
EBERLINE 11392-D02 PC BOARD REV. E SP14A 11392D02
EC ELECTRONICA 276853C PC BOARD
EC ELECTRONICA 276853C PC BOARD
EC ELECTRONICA 276853C PC BOARD
EC ELECTRONICA 276853C PC BOARD
ECOLAB CTI 175 PCB CIRCUIT BOARD PWA 9212-2002
ECOLAB CTI 175 PCB CIRCUIT BOARD PWA 9212-2002
ECS 601-869 POWER BOARD 601869
ECS 601-869 POWER BOARD 601869
ECS 604-140 PC BOARD 604140
ECS 604-140 PC BOARD 604140
ECS 604-180 PC BOARD 604180 530-619
ECS 604-180 PC BOARD 604180 530-619
ECS 604-180 PC BOARD 604180 530-619
ECS 604-180 PC BOARD 604180 530-619
ECS 604-180 PC BOARD 604180 530-619
ECS 604-180 PC BOARD 604180 530-619
ECS-BELLUNO PCB MODULE 1820278D LS / FAST SHIP DHL OR FEDEX
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ECS-BELLUNO PCB MODULE 1820278D LS / FAST SHIP DHL OR FEDEX
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EDA2 PCB CARD V921102
EDA2 PCB CARD V921102
EDP01 8251 772 5001 1 PCB CARD
EDP01 8251 772 5001 1 PCB CARD
EDS-726G BACKPLANE PCB CARD V1.2
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EDY1523B POWER BOARD 3.383.018
EDY1523B POWER BOARD 3.383.018
EECO 126706-01 PC BOARD REV.J 12670601
EECO 126706-01 PC BOARD REV.J 12670601
EECO 126706-01 PC BOARD REV.J 12670601
EECO 126706-01 PC BOARD REV.J 12670601
EECO 126706-02 PC BOARD REV.P 12670602
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EECO 126706-02 PC BOARD REV.P 12670602
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EFM 22003-02-01 TOTALIZER BOARD 220030201
EFM 22003-02-01 TOTALIZER BOARD 220030201
EFM 23050-01-01 STANDARD POWER SUPPLY BOARD 230500101
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EGAN 435339 RELAY DRIVER BOARD
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EH FLOWTEC 319100-0200 D I/O PCB BOARD
EH FLOWTEC 319100-0200 D I/O PCB BOARD
EH FLOWTEC 319100-0200 D I/O PCB BOARD
EH FLOWTEC 319100-0200 D I/O PCB BOARD
EH-0094.00.00.00.A PCB CARD
EH-0094.00.00.00.A PCB CARD
EH-0094.00.00.00.A PCB CARD
EH-0094.00.00.00.A PCB CARD
EIE - MOD 80.002 PCB CARD 80P1.A REV 7
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EIE - MOD 80.002 PCB CARD 80P1.A REV 7
EIE - MOD 80.002 PCB CARD 80P1.A REV 7
EIN FEHLER L-06-05-04-MV CIRCUIT BOARD L060504MV
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EIN/AUSGANGSKARTE 2-083-01-5423 BOARD 16E/16A 0,7A
EIN/AUSGANGSKARTE 2-083-01-5423 BOARD 16E/16A 0,7A
EIN/AUSGANGSKARTE 2-083-01-5423 BOARD 16E/16A 0,7A
EIN/AUSGANGSKARTE 2-083-01-5423 BOARD 16E/16A 0,7A
ELBAG ELCAN DIO DI/O INTERFACE MODULE 1133057
ELBAG ELCAN DIO DI/O INTERFACE MODULE 1133057
ELCO PMC15E-1 SWITCHING POWER SUPPLY
ELCO PMC15E-1 SWITCHING POWER SUPPLY
ELEC & ELTEK TS-D-8V0 POWER SUPPLY BOARD TSD8V0
ELEC & ELTEK TS-D-8V0 POWER SUPPLY BOARD TSD8V0
ELEC & ELTEK TS-D-8V0 POWER SUPPLY BOARD TSD8V0
ELEC & ELTEK TS-D-8V0 POWER SUPPLY BOARD TSD8V0
ELEC KOREA LIGHT CONTROLLER PCB CARD ILSL-20-1 / FAST SHIP DHL OR FEDEX
ELEC KOREA LIGHT CONTROLLER PCB CARD ILSL-20-1 / FAST SHIP DHL OR FEDEX
ELECTRIC SYSTEM INC B-90110-1A2 PULSE WIDTH FIELD REGULATOR BOARD
ELECTRIC SYSTEM INC B-90110-1A2 PULSE WIDTH FIELD REGULATOR BOARD
ELECTRIC SYSTEMS INC LMR-3 LINEAR MASTER BOARD LMR3
ELECTRIC SYSTEMS INC LMR-3 LINEAR MASTER BOARD LMR3
ELECTRIC SYSTEMS INC LMR-3 LINEAR MASTER BOARD LMR3
ELECTRIC SYSTEMS INC LMR-3 LINEAR MASTER BOARD LMR3
ELECTRICAL SOUTH SCI-411356 SCI-213507 CIRCUIT BOARD SCI411356
ELECTRICAL SOUTH SCI-411356 SCI-213507 CIRCUIT BOARD SCI411356
ELECTRO CRAFT 9100-0021 SERVO AMPLIFIER BOARD 91000021
ELECTRO CRAFT 9100-0021 SERVO AMPLIFIER BOARD 91000021
ELECTRO CRAFT 9100-0021 SERVO AMPLIFIER BOARD 91000021
ELECTRO CRAFT 9100-0021 SERVO AMPLIFIER BOARD 91000021
ELECTRO CRAFT 9100-0021 SERVO AMPLIFIER BOARD 91000021
ELECTRO CRAFT 9100-0021 SERVO AMPLIFIER BOARD 91000021
ELECTRO FLYTE 12M03-00166-02 PC BOARD 12M030016602
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ELECTRO SENSORS 535-050104 POWER SUPPLY BOARD 535050104
ELECTRO SENSORS 535-050104 POWER SUPPLY BOARD 535050104
ELECTRO-CRAFT 9097-1043 PRO-300 REV, D PCB CONTROLLER MODULE 90971043
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ELECTRO-FLOW CONTROLS LTD J071206 M310 PCB
ELECTRO-FLOW CONTROLS LTD J071206 M310 PCB
ELECTROL C-MH-23-787A-CM SPEED CONTROL BOARD CMH23787ACM
ELECTROL C-MH-23-787A-CM SPEED CONTROL BOARD CMH23787ACM
ELECTROLUX 0L2583 DIWAP AZ60, DISHWASHER MAIN PCB 673611U06CN
ELECTROLUX 0L2583 DIWAP AZ60, DISHWASHER MAIN PCB 673611U06CN
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ELECTROLUX 487028001 PCB CONTROL BOARD 487 02 79 34
ELECTROLUX 487028001 PCB CONTROL BOARD 487 02 79 34
ELECTROLUX 487028001 PCB CONTROL BOARD 487 02 79 34
ELECTROLUX COPUI20-X1 PCB BOARD / FAST BY DHL & FEDEX
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ELECTROLUX DIWAP10 DISH WASHER MAIN BOARD EU12-790H
ELECTROLUX DIWAP10 DISH WASHER MAIN BOARD EU12-790H
ELECTROLUX MARINE 471686068 ELECTRONICS 300°C
ELECTROLUX MARINE 471686068 ELECTRONICS 300°C
ELECTROLUX PCB DIWAP10 EU03-790B / FAST BY DHL / FEDEX
ELECTROLUX PCB DIWAP10 EU03-790B / FAST BY DHL / FEDEX
ELECTROLUX PCB DIWAP10 EU03-790B / FAST BY DHL / FEDEX
ELECTROLUX PCB DIWAP10 EU03-790B / FAST BY DHL / FEDEX
ELECTROLUX PCB DIWAP10 EU05-790D 50/60HZ / FAST BY DHL / FEDEX
ELECTROLUX PCB DIWAP10 EU05-790D 50/60HZ / FAST BY DHL / FEDEX
ELECTRONIC COUNTER INC. 00-1125-0465 COUNTER CONTROLLER BOARD 14581-CS
ELECTRONIC COUNTER INC. 00-1125-0465 COUNTER CONTROLLER BOARD 14581-CS
ELECTRONIC DEVICES ED710 GAS HYC % LEL GAS DETECTION MULTI FUNCTIONAL PCB CARD
ELECTRONIC DEVICES ED710 GAS HYC % LEL GAS DETECTION MULTI FUNCTIONAL PCB CARD
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ELECTRONIC MACHINE CGB250 PC BOARD REV.B
ELECTRONIC MACHINE RB250 OUTPUT BOARD REV.A
ELECTRONIC MACHINE RB250 OUTPUT BOARD REV.A
ELECTRONICS DEVICE ED710 % LEL GAS DETECTION MULTI FUNCTIONAL PCB CARD REV6
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