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Realization of Communication between DSP and PC Based on Modbus Protocol

机译：基于Modbus协议的DSP与PC与PC之间的通信实现

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This paper described the principle and application of serial communicate interface (SCI) of Digital Signal Processor (DSP). The TMS320LF2407A which is a type of DSPs made by Texas Instruments is taken as an example. Because this chip's special structure, and used widely in the motor control area. A typical schematic which is designed to describe the process between PC and DSP is provided. The standard of MODBUS protocol which is used widely in our industrial control area is also provided. The code realized this project by the way of interrupting. It can guarantee high effecting and real time of data transfer and no consume of the circle of CPU. It can also provide the reference of communication between touch screen and frequency converter in industrial control area.
机译：本文介绍了数字信号处理器（DSP）串行通信接口（SCI）的原理和应用。作为示例，采用TMS320LF2407A是由德克萨斯乐器制造的DSP的类型。因为这种芯片的特殊结构，并且广泛使用在电机控制区域。旨在描述用于描述PC和DSP之间的过程的典型示意图。还提供了在我们的工业控制区域中广泛使用的Modbus协议的标准。代码通过中断的方式实现了这个项目。它可以保证高效率和数据传输的实时，没有CPU圈的消耗。它还可以提供工业控制区域触摸屏和变频器之间的通信参考。

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