Finally the thesis narrates the network communications system based on the PROFIBUS, the PROFIBUS field bus structure and hardware, composition and bus access mode has made the detailed introduction.

• 最后叙述了镀锡生产线基于PROFIBUS网络的通信系统,对PROFIBUS现场总线的结构和硬件、组成及总线存取方式做了详细的介绍。