DeviceNet现场总线主站通信接口的研制

现场总线技术已成为当今工业自动化领域的主流,其中之一的DeviceNet总线是一种基于CAN协议的符合全球工业标准的开放型通信网络的总线,相对于其他总线来说,它具有较大的领先性,突出的高可靠性、实时性和灵活性,其应用日益广泛.然而,国内对DeviceNet总线的研究开发还处于起步阶段,远远落后于市场需求.本文通过对DeviceNet协议的深入研究,开发了主站设备通信接口,并编写通信接口的驱动程序和DeviceNet应用层程序,完成了实际设备的应用调试工作,从而解决了制约DeviceNet在我国推广普遍存在的问题.

The Development of DeviceNet Fieldbus Communication Interface for Master Device

DeviceNet is a mainstream field bus in industrial automation.Its application has been broadening because of its good performance,high reliability,high efficiency and low cost.However,the research and development on DeviceNet in China is far behind the market request.This work focus on the development of DeviceNet communication interface for master devices.The interface drivers,the protocol application software which realize DeviceNet specification are successfully programmed.This thesis describes DeviceNet Specification with an emphasis on its communication protocol including message,device profile and predefined master/slave connection set,constitutes a technical requirement of a general DeviceNet communication interface for master device;and finally designs and realizes the communication interface.