Any solution for 'OutputTimes' are not supported by fixed step solvers ('ode5'). The first and last elements of TIMESPAN are being used as the start and stop times.

Hello I am trying to optimize cost of energy consumption by varying the times of the day in minutes between 0 and 1440. I have the code: options = simset ('solver','ode5','SrcWorkspace','current'); [tout] = sim('EnergyMdl',[0 1440],options); I have 3 initial time values and i expect three outputs (x,y,z) when i run the optimization. However, am getting the error below: 'OutputTimes' are not supported by fixed step solvers ('ode5'). The first and last elements of TIMESPAN are being used as the start and stop times. All other elements are being ignored Could you please assist or advise me on the solver or any trick to solve this. Am kinda stalk. Chris