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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FANUC 10M DC Servo Motor A06B-0651-B012-RREBUILT IT

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FANUC A16B-2202-0853/02A OPT2 w/ Axis CardsMULTIPLE IN STOCKFAST SHIP

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FANUC A02B-0120-C051/MAR 9 CRT/MDI itCLEAN TAKE-OUT

GRINNELL GDA-55 Actuator w/ Alex5000 ControlGOOD TAKE-OUT

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IAI SEL-G-4-AC-200C.200C.60B.30L ControlGOOD TAKE-OUT

KEB / HOMAG 07F5CBB-YA00 AC Drive w/ F5 KeypadGOOD TAKE-OUT

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HUTTINGER TIS 10/100 THE-935343 PCB 935416V02GOOD TAKE-OUT

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WTC MF600 MFDC Inverter 304-0111A114kVa3PhGOOD TAKE-OUT

DLOG NC-System IPC486 SX-25 Operator ControlGOOD TAKE-OUT

KUKA 1FK7103-5AZ91-1ZZ9-Z Servo5.9kWGOOD TAKE-OUT

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FUJI VFC500A-7W Ring Compressor2.5Hp154cfmLIGHT-USE

CHLORIDE EDP70-Plus PC Interface 15B10645GGOOD TAKE-OUT

ASTEC INDUSTRIES PWB-311 Quantum CPU BoardGOOD TAKE-OUTFAST SHIPPING

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WTC MF600 MFDC Inverter 304-0111GB98200GOOD TAKE-OUT

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CONTROL GAGING 801N-310A-22MG Control MonitorGOOD TAKE-OUT

ALLEN BRADLEY SLC500 w/ PSU -I/O’sGOOD TAKE-OUT

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ABB AF1650-30 POWER CONTACTOR 1650AMP VOLTAGE 100-250VAC

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SCHNEIDER NS1250N CIRCUIT BREAKER 1250AMP 4POLE 440VAC 50KA WITH MICROLOGIC6.0A

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