New Node Integration for Master-Slave Fieldbus Networks
W. Elmenreich, W. Haidinger, Philipp Peti · 2002
The industry calls for fieldbus architectures that allow transducer nodes to be connected into a network in a true "plug and play" fashion. A plug and play configuration consists of at least three tasks: to identify the new nodes, to obtain the documentation, and to download the configuration. This paper deals with node identification and configuration programming for the TTP/A fieldbus. We present a method for identification and configuration of new nodes that is suitable for master-slave fieldbus networks with deterministic timing behavior. The method integrates well with the TTP/A protocol and is implementable in standard TTP/A slave and master nodes. Even though configuration of new components is normally not time critical, our method inherites a deterministic timing behavior from the TTP/A protocol and can be used in parallel with real-time traffic for hot plug and play of new nodes.