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
EIE - MOD 80.002 PCB CARD 80P1.A REV 7
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
EIN FEHLER L-06-05-04-MV CIRCUIT BOARD L060504MV
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 CSOD- 80200W DISPLAY PCB RR000G7091
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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
ELECTRONIC MACHINE CGB250 PC BOARD REV.B
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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