基于F28335的PROFIBUS-DP从站与CAN通信接口设计

Designs of PROFIBUS-DP slave station interface and CAN communication interface based on F28335

Profibus-DP和CAN总线作为最流行的两种现场总线,应用越来越广泛。针对不同总线接口的设备无法通信的问题,提出了基于F28335的Profibus-DP从站与CAN通信接口设计。采用专用通信处理芯片VPC3+S与F28335并行通信的方式实现了Profibus-DP从站接口设计,采用隔离收发模块与eCAN模块实现了CAN通信接口设计。通过硬件组态进行了接口通信对比试验,试验结果表明,基于F28335的Profibus-DP从站与CAN通信接口能够实现系统之间的可靠通信,而且具有实现简单、方便接入的特点。

As the most popular two kinds of field bus, Profibus-DP and CAN_BUS are more and more widely used. Aeeording to the problem that the equipment of different bus interfaee eannot eommunieate with eaeh other, the Profibus-DP slave station interfaee and CAN interfaee based on F28335 are designed. The design of Profibus-DP slave station interfaee is realized by means of parallel eommunieation between VPC3 ＋ S and F28335, and the design of CAN eommunieation interfaee is realized by using isolated transeeiver module and eCAN module. Testing the eommunieation interfaees by hardware eonfiguration, the results show that the Profibus-DP slave station interfaee and the CAN communication interface based on F28335 can realize the reliable communication between systems, and have the charaeteristics of simple implementation and convenient access.