期刊文献+

几种现场总线的介质访问控制方式 被引量:3

Media Access Control Mode of Several Fieldbuses
下载PDF
导出
摘要 工业生产对控制网络的实时性和可靠性具有很高的要求,而介质访问控制方式直接决定了网络的实时性和可靠性,现场总线的MAC层在很大程度上决定了网络的实时性与可靠性,可以说是现场总线系统的关键。阐述了几种现场总线标准的介质访问控制方式,分析了它们在网络轻载、重载时的性能。介绍了MAC层的两大体系:令牌环/令牌总线和CSMA/CD,并深入分析了PROFIBUS和LONWORKS的MAC层的实现方式,探讨了它们的优缺点。 Industrial production has very high requirement for the real - time behavior and reliability. The media access control protocol directly determines the real- time behavior and reliability of a fieldbus. The MAC layer largely determines the real - time behavior and reliability of a fieldbus, so it is said to be the key to the fieldbus. The MAC mode of four main fieldbus was discussed, then their function under light and heavy load were analyzed. There are two mam systems of MAC layer: token ring/token bus and CSMA/CD. Moreover, the methods of realizing MAC layer, which are used by PROFIBUS and LONWORKS were analyzed, their advantages and disadvantages were also discussed.
作者 仉宝玉
出处 《辽宁石油化工大学学报》 CAS 2004年第2期69-72,共4页 Journal of Liaoning Petrochemical University
关键词 现场总线 介质访问控制 实时性 MAC层 网络系统 自动化 Fieldbus Medium access control Real-time Priority
  • 相关文献

参考文献3

二级参考文献9

共引文献17

同被引文献45

引证文献3

二级引证文献7

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部