SeeMeCNC Rostock MAX v2 Assembly Manual page 228

Fig. 21-11 shows how well the controller manages temperature over time. The display we're
interested in right now are the red and brown lines. The thin red line represents the actual hot end
temperature and the brown line shows an average of the recorded temperature. After a short time, the
display will look something like this:
Fig. 21-11: Reaching and holding a target temperature.
You can see the PID auto tune function is "learning" how to better manage the temperature in
the hot end. As time goes on, the actual temperature begins to hold to the center of the average target
temperature.
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