Fig. 3
From: Optimizing linear routing in the ToLHnet protocol to improve performance over long RS-485 buses
Optimized linear routing example. An example of an RS-485 bus connecting ten nodes uniformly spaced with an inter-node distance ℓ is presented. The transmission speed is assumed to have been chosen so as to allow reliable reception up to a distance of at least 3ℓ. Among all the possible graph edges, represented by arcs, the specialized linear routing algorithms selects the tree highlighted in red