随着微处理器的快速发展和广泛的应用,设备之间彼此通信、控制,在精度、可操作性以及可靠性、可维护性等都有更高的要求。因此对主流现场总线在不同领域的对比研究具有非常大的应用价值,本文对基金会现场总线、Lonworks现场总线、Profibus现场总线的对比必将对同类课题的研究提供一定的参考。 With the rapid development of microprocessors and their widespread application, devices communicate with each other and control each other with higher requirements on accuracy, operability, reliability and maintainability. Therefore, it is of great value to compare the mainstream fieldbus in different fields. This article will provide a reference for the research on similar topics by comparing the Foundation fieldbus, Lonworks fieldbus and Profibus fieldbus.