Figure 9
From: Efficient integration of secure and safety critical industrial wireless sensor networks
The upper graphs show the frequency distribution of the time between consecutive WirelessHART telegrams, Δ t W i H A RT , at different WirelessHART period times, Tcy W H . The lower graphs show the frequency distribution of the time between transitions on the Profisafe toggle-bit, Δt Profisafe , at the same WirelessHART period times, Tcy W H , as in the upper graphs. The population size for Δt Profisafe is ≥ 1200 for all Tcy W H .