推送:0010-04449M省市县区域/直送2024全+境+派+送

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。

ALLEN BRADLEY 50373 CONTROL/SIGNALING CARD

ALLEN BRADLEY 50386 VOLTAGE SENSING PC BOARD

ALLEN BRADLEY 50386 VOLTAGE SENSING PC BOARD

ALLEN BRADLEY 50387-002 MODULATOR BOARD 50387002

ALLEN BRADLEY 50387-002 MODULATOR BOARD 50387002

ALLEN BRADLEY 50404-001 INTERFACE BOARD 50404001

ALLEN BRADLEY 50404-001 INTERFACE BOARD 50404001

ALLEN BRADLEY 50904 SIGNAL BOARD REV.03

ALLEN BRADLEY 50904 SIGNAL BOARD REV.03

ALLEN BRADLEY 50905-002 DRIVER BOARD 50905002

ALLEN BRADLEY 50905-002 DRIVER BOARD 50905002

ALLEN BRADLEY 50906 PC BOARD REV. D

ALLEN BRADLEY 50906 PC BOARD REV. D

ALLEN BRADLEY 50916 CONTROL BOARD REV.03

ALLEN BRADLEY 50916 CONTROL BOARD REV.03

ALLEN BRADLEY 509-A0D-XXX MOTOR STARTER SER B 595-A CONTACTOR SER C

ALLEN BRADLEY 5250-MLP2/B DAUGHTERBOARD 5250-LP/B HOST BOARD

ALLEN BRADLEY 6217-973 UDB PC BOARD 6217973

ALLEN BRADLEY 6217-973 UDB PC BOARD 6217973

ALLEN BRADLEY 634176-90 RELAY DRIVER BOARD 63417690 REV 8

ALLEN BRADLEY 634303B-91 SERVO OUTPUT BOARD 634303B91

ALLEN BRADLEY 634483 PC BOARD REV.5

ALLEN BRADLEY 634483 PC BOARD REV.5

ALLEN BRADLEY 634619 REV.A PC BOARD 634619A

ALLEN BRADLEY 634619 REV.A PC BOARD 634619A

ALLEN BRADLEY 634619A UMC CIRCUIT BOARD

ALLEN BRADLEY 634619A UMC CIRCUIT BOARD

ALLEN BRADLEY 634699 CIRCUIT BOARD 634699 REV 3 634699-03

ALLEN BRADLEY 635531-9002 PROCESSOR BOARD 6355319002

ALLEN BRADLEY 635533 REV. E2 PC BOARD REPAIRED

ALLEN BRADLEY 635533 REV. E2 PC BOARD REPAIRED

ALLEN BRADLEY 635537 REV. 2 MICRO CONTROL BOARD 635536-01

ALLEN BRADLEY 636412-90 PC BOARD 63641290 636412 REV E2

ALLEN BRADLEY 636429-900 PROCESSOR BOARD 636429-900-01 636429-2 636429

ALLEN BRADLEY 7300-UC12 TAPE READER BOARD 7300UC12 REPAIRED

ALLEN BRADLEY 7300-UCI-2 TAPE READER BOARD 7300UCI2

ALLEN BRADLEY 7300-UMA-1 CIRCUIT BOARD 7300UMA1

ALLEN BRADLEY 7300-UMA-1 CIRCUIT BOARD 7300UMA1

ALLEN BRADLEY 7300-VHA1 KEYBOARD PC BOARD 7300VHA1

ALLEN BRADLEY 74102-303-51 DRIVE BOARD 7410230351 REV 10

ALLEN BRADLEY 74102-303-51 DRIVE BOARD 7410230351 REV 11

ALLEN BRADLEY 74103-216-51 PC BOARD 7410321651

ALLEN BRADLEY 74103-216-51 PC BOARD 7410321651

ALLEN BRADLEY 8000-KAC BOARD 8000KAC

ALLEN BRADLEY 8000-KAC BOARD 8000KAC

ALLEN BRADLEY 8000VA BOARD 8000-VA

ALLEN BRADLEY 8000VA BOARD 8000-VA

ALLEN BRADLEY 8000VA BOARD 8000-VA

ALLEN BRADLEY 8000VA BOARD 8000-VA

ALLEN BRADLEY 8000VA BOARD 8000-VA

ALLEN BRADLEY 8000VA BOARD 8000-VA

ALLEN BRADLEY 8000-VD MDI KEYBOARD INTERFACE BOARD 900051-01, 8000VD

ALLEN BRADLEY 802T-HP OILTIGHT LIMIT SWITCH

ALLEN BRADLEY 802T-HP OILTIGHT LIMIT SWITCH

ALLEN BRADLEY 802T-HP OILTIGHT LIMIT SWITCH

ALLEN BRADLEY 802T-HP OILTIGHT LIMIT SWITCH SER J

ALLEN BRADLEY 802T-HP OILTIGHT LIMIT SWITCH SER J

ALLEN BRADLEY 802T-HP OILTIGHT LIMIT SWITCH SER J

ALLEN BRADLEY 813S-V3-480V VOLTAGE MONITORING RELAY 813S SER B

ALLEN BRADLEY 900057 PC BOARD REV.1 8000-GCC

ALLEN BRADLEY 900057 PC BOARD REV.1 8000-GCC

ALLEN BRADLEY 900057 PC BOARD REV.1 8000-GCC

ALLEN BRADLEY 900057 PC BOARD REV.1 8000-GCC

ALLEN BRADLEY 900057 PC BOARD REV.1 8000-GCC

ALLEN BRADLEY 900057 PC BOARD REV.1 8000-GCC

ALLEN BRADLEY 900059 CIRCUIT BOARD

ALLEN BRADLEY 900059 CIRCUIT BOARD

ALLEN BRADLEY 900072 PC BOARD

ALLEN BRADLEY 900072 PC BOARD

ALLEN BRADLEY 900090 SERVO CONTROLLER BOARD 8000-AG

ALLEN BRADLEY 91684901 SERVO ANALOG BOARD REV 03

ALLEN BRADLEY 91684901 SERVO ANALOG BOARD REV 03

ALLEN BRADLEY A1231 PC BOARD SER.D

ALLEN BRADLEY A1231 PC BOARD SER.D

ALLEN BRADLEY S50387 MODULATOR LOGIC BOARD

ALLEN BRADLEY S50387 MODULATOR LOGIC BOARD

ALLEN BRADLEY SK-U1-MCBB-B1 MAIN CONTROL BOARD SKU1MCBBB1

ALLEN BRADLEY SP-120659 MAIN CONTROL PC BOARD 148363 SP120659

ALLEN BRADLEY SP-50399 DRIVER BOARD 50399 REV.07

ALLEN BRADLEY SP-50399 DRIVER BOARD 50399 REV.07

ALLEN BRADLEY VDK-2 KEYBOARD CIRCUIT CARD VDK2