摘要
ControlNet是由罗克韦尔自动化公司推出的一种开放的国际标准现场总线,是面向控制层的高速实时控制和I/O网络,对于离散和连续过程控制应用场合,均具有确定性和可重复性。本文在给出ControlNet的特点、优点与应用领域的基础上,介绍了其体系结构与协议分层、应用隐性令牌传递技术的媒体访问控制机制、用于建立连接并对其进行维护的网络与传输层。
ControlNet is an open ISO Fieldbus that developmented by Rockwell Automation. It is a high speed real-time control and I/O network, widely used in the digital and continual process control fields ,it provides full determinism and repeatability. On introduced the characters , advantages and the application fields, detailed the Integrated Architecture, the protocol lays, the media access mechanism that adopts implicit token passing technology, the Network and Transport lays that provide connection buildings and maintains, the Object Model used to describe the communication functions of products and the device profiles.
出处
《微处理机》
2005年第2期59-61,64,共4页
Microprocessors
