摘要
针对控制领域对通信的特殊要求，提出了一种新的竞争型介质访问控制协议。在低速总线中，和主从、令牌传递相比，这种新的协议在通信效率、实时性、开放性、周期性通信保持能力等方面具有很好的优点；同时它可以和采用主从、令牌传递介质访问控制协议的系统很好地相兼容，最大限度地维护现有投资。
Considering the special requirements of industrial control to communication,a new kind of medium access mechanism with contention is proposed.By contrast,the new medium access control (MAC) is better in many aspects than token passing and centralized polling,and it exhibit a high degree of compatibility with those devices which have already been designed for the Fieldbus Foundation and Profibus networks.
出处
《化工自动化及仪表》
CAS
1999年第6期34-37,共4页
Control and Instruments in Chemical Industry
基金
国家自然科学基金!(69984003) 资助项目
