推送：0100-02146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。

SIEMENS PLC 6ES7 331-7PF01-0AB0 Analog Input Module   6ES7331-7PF01-0A

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BECKHOFF EL2904 Analog input terminal module

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 SIEMENS PLC 6ES7 331-7PF01-0AB0 Analog Input Module   6ES7331-7PF01-0A

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  Sealed 1769-IQ16 /A CompactLogix 16 Pt 24VDC Input Module

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  2085-OW8 Micro800 8 Point Relay Output Module

  Sealed 1794-OW8 Flex 8 Point Relay Output Module 1794OW8

  Sealed MicroLogix 1762-OB16 /A 24VDC Output Module

 AB  1756-OW16I SER A ControlLogix 16 Pt Digital Module

  Factory Sealed Allen Bradley 1734-IE2C PLC Input Module 1734IE2

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AB 1734-OA4 POINT I/O 4 Point Digital Output Module 1734OA4

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Factory Sealed 1734-OB4E Ser C 4 Point Output Module 1734OB4E

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Micro800 4 Point Analog Output Module 2085-OF4

Sealed 1734-OB8E Ser C 8-Point Output Module 1734OB8E

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AB  Sealed 1794-IA16 Flex 16 Point Digital Input Module

AB 2085-OW8 Micro800 8 Point Relay Output Module

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Factory Sealed Allen-Bradley 20-750-ENC-20750ENCModule US

  Sealed Allen-Bradley 1734-OE4C POINT I/O 4 Point Analog Output Module

  Sealed Allen-Bradley 2085-IF8 Micro800 8 Point Analog Input Module

 Allen Bradley 1769-OF8C /A CompactLogix 8 Pt A/O Current Module 1769OF8C

 Allen Bradley 1794-AENTR AB I/O Module EtherNet IP Adaptor Ser A

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AB  Factory Sealed 1756-EN2T Ser D ControlLogix EtherNet/IP Module 1756EN2T

AB 1769-OF2 Allen-Bradley Ser B Compact I/O Analog Output Module  Sealed

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Factory Sealed 1746-OW16 SLC 16 Point Digital Output Module

Factory Sealed Allen-Bradley 1794-IB32 Flex I/O Ser A Input Module

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Omron CJ1W-ID21PLC Input Module CJ1WID21  

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Omron PLC Output Module CJ1W-OC21CJ1WOC21  

Siemens  TP177 6AV6 640-0CA11-0AXSHA24 HMI PLC Module CA

SIEMENS 6ES7 231-0HC22-0XA0 6ES7231-0HC22-0XA0 Analog Input Module Made in Germa

SIEMENS 6ES7153-1AA03-0XB0 6ES7 153-1AA03-0XB0 PLC Module

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Allen Bradley 1769-L18ERM-BB1B CompactLogix 0.5MB Controller-MOTION

Factory Sealed AB 1769-L19ER-BB1B CompactLogix 1MB Memory Controller

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