SimMechanics does not support visualization in accelerator mode
SimMechanics supports Accelerator and Rapid Accelerator simulation modes. Selecting an accelerator mode generates executable code that shortens the time required to run a simulation. However, the simulation produces no visualization output. Mechanics Explorer does not open, and you cannot visualize the model simulation. To restore visualization, select the Normal simulation mode.
If you simulate a model in Accelerator or Rapid Accelerator mode, SimMechanics issues a warning indicating that accelerator modes do not support visualization. To remove the warning, disable visualization with Mechanics Explorer: