CAN 總線作為一種優(yōu)秀的現(xiàn)場總線已成為構建現(xiàn)代監(jiān)測網(wǎng)絡的重要通信平臺之一，而作為各設備之間通信橋梁的接口卡，顯得更為重要。本文介紹一種基于CAN 總線的智能接口卡的設計方法，給出了一個利用PHILIPS 公司的CAN 器件實現(xiàn)的接口卡原理框圖，并闡述了接口卡程序的編制方法。
關鍵詞： 現(xiàn)場監(jiān)測網(wǎng)絡 現(xiàn)場總線 CAN 總線 可編程邏輯器件
Abstract ： As an excellent Field bus,Can bus has become the major communication platform to construct the modern network for monitor.The interface card will be more crucial ,for we use it to connect the communication equipments. In this paper ,we introduced a designing method
for CAN Bus interface of the front module in a field network based on the CAN bus technology.We also introduced a instance adopting the PHILIPS’s CAN interface products.The method for related programming is enclosed,too.
Keywords: Field Monitor Network, Field Bus, CAN Bus， EPLD.