从开发的角度介绍了VPC3+C芯片的主要功能和单片机C8051F020以及软硬件设计的主要思想,分析了Profibus-DP从站的状态机,并介绍了从站与主站通讯所需的GSD文件。
The main function of VPC3 + C and microcontroller chip as C8051F020 and the main ideas of hardware and software are introduced in this paper.The state machine of Profibus-DP slave is analyzed and the GSD file needed in the communication between main station and slaves is also introduced.