基于CoDeSys平台的嵌入式软PLC研究（学位论文-工学）.doc

分类号：TP273+.5U D C：密 级： 公 开单位代码： 10424学位论文基于 CoDeSys 平台的嵌入式软 PLC研究张廷坤申请学位级别：硕士学位指导教师姓名： 黄自伟专业名称：电路与系统称：教职 授山东科技大学二零一二年五月 论文题目：基于 CoDeSys 平台的嵌入式软 PLC研究作者姓名： 张廷坤专业名称：电路与系统指导教师： 黄自伟入学时间：2009年 9月研究方向：嵌入式系统及应用职 称：教 授论文提交日期：2012年 5月论文答辩日期：2012年 6月 9日授予学位日期： STUDY OF EMBEDDED SoftPLC BASED ON CODESYSPLATFORMA Dissertation submitted in fulfillment of the requirements of the degree ofMASTER OF PHILOSOPHYfromShandong University of Science and TechnologybyZhang TingkunSupervisor: Professor Huang ZiweiCollege of Information Science and EngineeringMay 2012 声 明本人呈交给山东科技大学的这篇硕士学位论文，除了所列参考文献和世所公认的文献外，全部是本人在导师指导下的研究成果。

该论文资料尚没有呈交于其它任何学术机关作鉴定硕士生签名：日 期：AFFIRMATIONI declare that this dissertation, submitted in fulfillment of the requirementsfor the award of Master of Engineering in Shandong University of Science andTechnology, is wholly my own work unless referenced of acknowledge. Thedocument has not been submitted for qualification at any other academicinstitute.Signature:Date: 山东科技大学硕士学位论文 摘要摘要自 PLC问世以来，便以其高可靠性、较强的抗干扰能力、专用化与模块化设计以及适用于恶劣环境等优点，在工业控制领域及其他行业得到广泛的应用，但传统 PLC软硬件设计的封闭性逐渐成为限制其进一步发展的主要原因。

随着计算机技术的迅猛发展以及国际标准 IEC61131-3 的制定，基于 PC平台的软 PLC以其开放的软硬件结构等优势，获得较为迅速的发展，但基于 PC的软 PLC 存在实时性差，制作成本高等缺点近年来，嵌入式系统以其特有的低成本、低功耗、高实时性等优势，在工业控制领域中得到日益广泛的应用，嵌入式系统与软 PLC的结合已经成为工业控制领域发展的一种趋势本文在深入了解传统 PLC的结构、工作原理的基础上，详细介绍了软 PLC系统的控制方案，并对嵌入式软 PLC技术进行了详细的分析基于分析的结果，提出了嵌入式开发平台上软 PLC 的实现方案总体方案是将 3S公司的 CoDeSys软 PLC嵌入到以Cortex-M3处理器为核心的嵌入式系统中，从而构建出具有一定创新性的嵌入式软 PLC系统模型嵌入式软 PLC 系统模型包括开发系统和运行系统两部分本文开发系统使用CoDeSys所提供的集成开发环境，此环境运行于 Windows平台，符合 IEC61131-3国际标准，为用户提供了一个 PLC应用程序编辑环境运行系统运行在以 Cortex-M3 处理器为核心的嵌入式系统上，并通过异步串行通信接口与 CoDeSys开发环境进行通信，将经调试无误的 PLC 程序下载到其中。

运行系统的设计主要是针对本系统硬件平台的具体构架进行 CoDeSys运行系统的移植定制，这也是本文研究的重点文章最后，讨论了该课题研究的特点和还需完善的几个地方关键词：嵌入式软 PLC ，开发系统，运行系统，CoDeSys 山东科技大学硕士学位论文 摘要AbstractThe traditional PLC was widlely used in the industrial control field and other fields, withthe advantage of high reliability, strong anti-jamming capacity, specialization, modular andso on. But the proprietary of software and hardware structure of traditional PLC became thekey cause of restrictions on PLC further development. With the development of computertechnique and the establishment of IEC61131-3 criterion, SoftPLC based on PC platformdevelops rapidly, with the advantage of developed software and hardware structure. Recentyears,embedded system has been widely used in the field of industry control depend on lowcost, low power and. So it’s trend to combine the embedded system and SoftPLC.This article starts with the thorough understanding structure and work principle oftradition PLC, then detailedly analyses the control scheme of SoftPLC system and embeddedSoftPLC.Based on the result of analysis, the implementation project of the SoftPLC based onembedded developing platform is provided. The total project is that SoftPLC-CoDeSys isembedded into embedded system which takes Cortex-M3 processor as the core, thus a modelof embedded SoftPLC system is constructed.The model of embedded SoftPLC system includes development system and runningsystem. The development system use CoDeSys which accords to the international standardIEC61131-3. CoDeSys runs on windows platform and is used as programming environmentfor application PLC program. The running system runs on the embedded system which takesCortex-M3 processor as the core and communicates with CoDeSys via UART, and then thePLC procedure which is downloaded to the embedded system. The design of running systemmainly implements the transplant of the CoDeSys running core according to the structure ofthe embedded system hardware platform and this is the key point of the article.Finally wediscuss the characteristic of this embedded SoftPLC system and several places which are alsoneeded to be consummated.Keywords: embedded SoftPLC,development system，running system,CoDeSys 山东科技大学硕士学位论文 目录目录1 绪论 ....................................................................................................................11.1课题背景........................................................................................................................ 11.2课题提出及意义............................................................................................................ 41.3课题研究的主要内容................................................................................................... 61.4本章小结....................................................................................................................... 72 嵌入式软PLC的总体结构设计........................................................................82.1传统PLC体系结构及其工作原理 ............................................................................... 82.2嵌入式软PLC 体系结构及其实现原理 ..................................................................... 112.3基于CoDeSys平台的嵌入式软PLC 系统结构及实现原。