Hello,

I have diffuculties running a discrete model with OpenModelica (Version 2013-09-16 1.9.0), the model is basically a translation from a Simulink model which is completely explicit. Therefore I would not expect initialization difficulties however OpenModelica using the Euler integration scheme, gives the following warning. 

     LOG_INIT   | Warning | try -ils to activate start value homotopy.

The model is basically characterized by a algorithm section which is the main body and a small equation body.

initial equation
    h_out_new = NEM_models.Functions.ms_propertyies.ms_property_h_T(T_0);

equation
   sampleTrigger = sample(t_start, dt);
   when sampleTrigger then
      h_out = pre(h_out_new);
      firstTrigger = time <= t_start + dt/2;
   end when;

algorithm
   ... rest of the code

The model runs in Dymola.
I’ve tried to help the solver by setting h_out(start=...) but this doesn't help.   

I would very much appreciate it if someone can give me some pointers how to help the solver to find the initial solution.