針對工業控制中存在的不同設備間難以進行通訊轉換的問題，開發了一種 PROFIBUS-DP 現場總線通訊轉換接口，它能使具有RS485 接口的裝置作為從站連接到 PROFIBUS-DP 網絡，完成通訊和控制功能。本文主要介紹了PROFIBUS-DP 通訊轉接口的
硬件及軟件的實現。

關鍵字：PROFIBUS-DP 接口 SPC3 單片機
The Development of PROFIBUS-DP Communication Transform Interface Zhou Xiao-hui, Meng Yan-jing, Xu De-yu (College of Electric and Electronic Engineering; Shaanxi University of Science & Technology; Xianyang; Shaanxi; 712081) Abstract: In view of the communication transform problem in the industry control, a PROFIBUS-DP communication transform interface is developed. This interface can connect the device that provided with RS485 interface to the PROFIBUS-DP, and carry out communication and control functions. In this paper, designing method of the hardware and software is discussed about PROFIBUS-DP communication transform interface.
Key words: PROFIBUS-DP; interface; SPC3; single chip computer