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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Sperry Marine DTR 600 Heading Repeater 121199

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Wynn Wiper Controller Series 2001 it 126019

QMI Oil Mist Detector 130511

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Fluiten Mechanical C2S028023474 12131028E Sprocket 13391

Fluiten Mechanical C2S028023474 12131028E Sprocket 13393

Mircom Secutron MR-2910 SE2910 Network Card PCB

Navitron BNWAS DBI PCB Module 952186 Distribution it

Obsermet Wind Speed Tracking Digital Display 01804-63411 Boat 13403

MSC 803800 Printed Circuit Board 803439

Ravel RHF-03 Fire Panel Alarm 13448 Panel Equipment

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ABB SPAC 310C Transmit Network Control  Relay 13454

Nera F33 GPS Receiver Module Transceiver Assembly 102296 1.8

Rolf Janssen RG 09 Regler Fur I/U Lader Card 13440

OHSI PRI093A PCB Card 13460

Servomac Milano 2UACFBK014051 CT405B Printed Circuit Board

Navitron Systems WAS DIU BNWAS Module NTD921159/ISOC

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OHSI 93DTRA PCB Card

Simrad GI51 Gyro Interface it 3773 Module 13414

Ysk systems 2000-02 Module 13442

Matrox F7292-0102 Rev B Graphics Video Card 13894

ADIS PCB Card Module 8340327 REV.C P.N. 03956-1982163-2

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Cisco Catalyst 2960-CX Series Ericsson 9175808

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Jotron 6200 Phontech Integrated Commication Server 1133

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JRC NBD-768A Power it ADE PSU 0709037

Auxiliary Console SCHEM  Assy 200C302 REV BCDEFGHJ PCB Card

Salwico 759H PCB Card LE 9808021

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Terasaki EIC-142 K/762/156-001A PCB Card

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Terasaki EID-211 K/762/261/001B PCB Card

ACHME AM237B1 REV:G JR CH24B-1 94V0 PCB Card

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Endress Hauser Waterpilot FMX167 Hydrostatic Level Probe

OHSI CPU16Z1 Rev C PCB Card 9807

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Apollo 39850-859 43781-164 ISS.5 PCB Card Assy.

Hydai 6GA2 491-1A PCB Card For Hydai-HFC6 13417

Europafilter EF500HY Oil Cleaning

Philips KS 2014 Temperature Controller 230VAC 48...62Hz 6VA 9404 999 12611

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Cyberex Inc PC 26118-1 Rev G 41-01-26119 Circuit Board

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Valmet Automation IPU Power it Module A413325

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Terasaki EMI-301 K/787/11-001A PCB Card EMI301 8975

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