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Documents PLC控制系统及其通信技术在大型机床设备改造中的应用
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  • Author Author: sophie0love
  • Date Created: 21 Nov 2010 1:33 AM Date Created
  • Last Updated Last Updated: 9 Nov 2021 4:48 PM
  • Views 414 views
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PLC控制系统及其通信技术在大型机床设备改造中的应用

可编程控制器(PLC)是以微处理器为核心,集微机技术、自动化技术、通信技术于一体的通用工业控制装置。本课题研究的内容就是利用PLC技术实现普通机床的智能化改造,重新设计电气控制系统,将最新的控制技术和网络通信等技术应用到改造过程中,提高机床系统的稳定性和加工精度。 本文综述了PLC控制系统的一般结构及PLC网络通信基本原理和方法;提出了PLC控制系统设计的原则、内容和步骤;针对机床改造的特殊情况,进一步完善了继电器控制电路移植成PLC梯形图的规则。以落地镗床T6220的改造为例,介绍了PLC控制系统的设计和实现过程;将最新的伺服控制和PPI网络通信等技术应用于机床控制系统改造,提出了改造中的注意事项。 针对四米立车控制系统的特点,深入研究西门子S7-200系列PLC串行通信技术;根据系统的要求,编制了PLC之间的自由口通信协议,给出了实现该协议的部分代码。通过自由口通信协议,加快PLC之间的通信速度,满足了系统的要求。 文章最后总结了机床进行PLC改造的优点和不足,进一步提出了实现金工车间管控一体化系统的设想。

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