【摘要】 介绍了Profibus现场总线的基本框架，集中讨论了其在低压电器行业中的应用，重点介绍了Profibus—DP与As—I总线，3WN6断路器，Beckoff公司的BK3000系列相连的情况。更多还原

【Abstract】 The article mainly introduces the framework of p rofibus，and centres in its usage in low voltage appartus.It emphasizes in the c onnection of profibus-DP to AS-I，3WN6 breaker,and BK3000 series.更多还原