4. Classes FMUCoSimulationV1 and FMUCoSimulationV2

Classes FMUCoSimulationV1 (FMI 1.0) and FMUCoSimulationV2 (FMI 2.0) offer a set of convenient functionalities for accessing and manipulating FMUs for Co-Simulation. The following example demonstrates the basic usage of class FMUCoSimulationV2 (usage of class FMUCoSimulationV1 is analogous):

logging_on = False
time_diff_resolution = 1e-9
fmu = fmipp.FMUCoSimulationV2( uri_to_extracted_fmu, model_name, logging_on, time_diff_resolution )

start_time = 0.
stop_time = 10.

instance_name = "sine_standalone1"
visible = False
interactive = False
status = fmu.instantiate( instance_name, start_time, visible, interactive )
assert status == fmipp.statusOK

status = fmu.setRealValue( 'omega', 6.28318531 )
assert status == fmipp.statusOK

stop_time_defined = True
status = fmu.initialize( start_time, stop_time_defined, stop_time )
assert status == fmipp.statusOK

time = 0.
step_size = 1.

while ( ( time + step_size ) - stop_time < time_diff_resolution ):
  # Make co-simulation step.
  new_step = True
  status = fmu.doStep( time, step_size, new_step )
  assert status == fmipp.statusOK

  # Advance time.
  time += step_size

      # Retrieve result.
  x = fmu.getRealValue( 'x' )
  assert fmu.getLastStatus() == fmipp.statusOK