【作者】 宋潇潇；

【导师】 林小峰；

【作者基本信息】 广西大学 ， 控制理论与控制工程， 2007， 硕士

【摘要】 IEC 61131-3标准是国际电工委员会(IEC)公布的关于可编程控制器的编程语言的标准。IEC 61499标准是在IEC 61131-3标准的基础之上建立起来的，它克服了IEC 61131-3标准在分布式控制系统中的局限性。Modbus协议是一种现场总线通信协议，得到了众多厂家的支持并广泛应用于工业控制领域。本文介绍了在分布式控制中Modbus通信协议的具体实现过程，并在ARM控制器与PC机之间采用该协议进行通信，解决了通信中的标准化问题并提高了通信的可靠性和稳定性。详细介绍了编程系统与运行系统之间的数据通信，并使用基于IEC 61131-3标准的软件对具体的实验要求进行编程。最终把控制程序下载到ARM开发板中组成了ARM分布式控制器，并使用该控制器实现了对三容液位控制实验装置液位的控制，达到了比较理想的控制效果。对IEC 61499标准进行了介绍，比较了IEC 61499标准与IEC 61131-3标准在在分布式控制中的优缺点，并在基于IEC 61499标准的软件上建立了算法。更多还原

【Abstract】 Standard IEC 61131-3 is a standard about programming language for PLC, developed by International Electrotechnical Commission (IEC). Standard IEC 61499 is based on Standard IEC 61131-3. It overcomes the limitation of using Standard IEC 61131-3 in distributed control systems. Modbus Protocol is a kind of open field bus communication protocol developed by MODICON. It is now supported by many instrument producers and applied to the industrial control field extensively.This article introduces how to use Modbus Communication Protocol in distributed control, and uses it to communicate between a computer and ARM controller. The problem of standardization is settled and the reliability and stability in communication is improved. We use software based on IEC 61131-3 to program controlling programs required by experiment, and show the data exchange between the Programming System and the Target System in detail. At last, the control programs are downloaded into an ARM demo board to form an ARM distributed controller. This controller is used to control a Three-tank Liquid Level, and gets a good result.Introduces the Standard IEC 61499, compares the advantage and disadvantage of Standard IEC 61131-3 and Standard IEC 61499 using in distributed control, and sets up an algorithm on the software based on it.更多还原