How divide states (run and stop, normal and alarms, summer and winter) in Stateflow for ventilation?

What is the best Stateflow structure (states) for ventilation system? It can be stopped or run. Run automatically or manually. There are also alarms. It has fan, heater, damper, pump and valve which have different algorithms in summer and winter periods.

Answer 1

[Vignesh]

You might want to look at the demo sf_climate_control for an example of a similar system. It uses a Stateflow construct called Truth Table

[Alexander]

1) This is very primitive system. Also it could be shortened (3 situations: t-> heater, t-> cooler, h-> humidifier). State/transition diagram is more readable because we see the paths from source state to destination states. And, if we have 10 inputs then Truth Table has 2^10 combinations.

2) The problem is how to divide equipment (fans, valves, dampers...) from modes (run, stop, alarms...).