发布式数据传输机制中隐含地址形式的分析

Analysis of the Implied Address in the Published Data Transfer Mechanism

基金会现场总线在其发布式数据传输机制中使用了隐含地址方式 ,本文将冗余地址方式引入该机制 ,从执行时间和抖动两个方面分析冗余引入前后网络的通信效果。结果显示 :隐含地址方式的效率在一定程度上高于冗余地址方式 ,但不确定性较高 ,且需要使用较多的本地定时器。

The published data transfer mechanism in Foundation Fieldbus uses implied address form.We introduce redundant address form into the mechanism.The influence to communication before and after introduction of redundancy is analyzed from the view of execution time and jitter.The results show that: the implied address form is fractionally more efficient than the redundant one,but its uncertainty is higher and it needs more local timers.