Hello Marco,
The "SimulANT+ Scripting Interface.chm" file which comes with SimulANT+ details all of the functions you can use to manipulate the simulator, while there are other sample scripts which show how to create up/down cycles for sensors in Python.
In particular you will want to look under the "FitnessEquipmentDisplay Class" section, and the command you will want to use is "SendTargetPower". I will see if we can get a sample script added sooner than later.
Best regards,
Harrison
