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。

Merlin Gerin ODUD 6717756 B1 PCB Assembly Board MGE UPS System 6717754-2A

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Applied Material 0190-16450 Rev. 001 SBC 9000-32-029 Rev. D CPRO3/128-30024

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General Electric 531X128HMSAAG3 Mov Support Card

ABB JCU-11 Spare Part 3AUA0000047068F Rev F for Frequency Drive ACS850-04

Linear Motion Driver LDS2C-D LIMO Oriental Motor Co. Ltd. Japan

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Danotherm CBR-V 210 DT 281 200R Compact Alpha Power Resistor

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1771-QH  Cat Rev J01 Rev A01 96827507 F/W Rev B Force Control Module 1771QH

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Oriental Motor ARD-C Stepping Motor Driver Single-Phase AR Series W/ Cable SMT

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EUROLOG Industrial Interface System llS/AI88-1A llS AI88-1A

EUROLOG Industrial Interface System llsPCA-1A llS PCA-1A FG

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Moni Log ShockDisplay Curve R20N Transportation Vibration Logger V4.42.6 SMT

Draeger Sensor XXS HCN P/N 6810887 Hydrogen Cyanide(HCN) Sn.ARNB-0245

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ACCU-FAB System 3645 Rev A Analog I/O Card Servo Motion Control System

Delta O3-DIN-DALI R1.2a BACnet Dali Lighting Module For O3-DIN System BMS HVAC

Delta O3-DIN-8xP R1.4 BACnet Input Output I/O Module 8-PT For O3-DIN System BMS

Schneider ATV312H075M2 Altivar Variable Frequency Drive Modbus V5.1IE57 0.75kW

TECO Electric 3P101C037011 Motor Speed Ratio Controller Assy T54001 Speecon

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SMT  HYBRID Moni Log ShockDisplay Curve R20 Transport Data Logger V4.22.4 Gmbh

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System iques SU-1263A Amplifier PC Board 19880222 KATO PLC Automation

Excellon 236960-02 Rev B PCB Assy-Beam Temp Controller BTC-1 BEV2-0

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Horiba Stec D213-SCD Mass Flow Controller 788-170019-300 Type 000161 300SCCM CI2

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