摘要
在工业控制领域中，CAN总线是一种新型的现场总线。本文首先介绍了CAN总线的数据帧结构，然后给出了CAN总线与物理媒体的接口原理电路。
In the field bus of industrial controlling area, the CAN field - bus is new. The paPerinboduces the structure of CAN ' s data fram and preSents two kind of the intethee circus with Phys-ics media.
