【摘要】 将以太网技术引入到工业现场过程控制领域，是当前现场总线技术发展的新趋势。工业以太网技术不仅免除了不同现场总线水平层之间难以集成的问题，而且为实现现场设备与互联网的直接连接，提供了一种非常便捷的方法。该文在对工业以太网技术阐述的基础上，具体介绍了在80C196单片机系统中，利用RTL8019AS以太网控制芯片，实现工业以太网接口的硬件电路设计及软件设计。更多还原

【Abstract】 It is a new trend in the fieldbus technology that the Ethernet techniques are employed in the industrial process control field. The application of the industrial Ethernet not only avoids the horizontal integration difficulties among different fiedbus protocols, but also provides a convenient way connecting the field devices to the Internet. Based on the introduction of industrial Ethernet technique, this paper describes a method of expanding an Ethernet interface using RTL8019AS Ethernet controller in the 80C196 single-chip system.更多还原