Using Simulink blocks with different run Modes (external, normal mode)

Hi,

I am trying to build a simulink mode that contains different Hardware parts. - A data Recorder+amplifier block that is working only in Normal mode (as provided by the company simulink package).

- The recorded data is processed and used to control a Lego EV3 Robot. The Lego Robot package of Matlab 2014 works in External mode only.

Putting all the blocks in a single Simulink model I can not get the desired performance. - In Normal mode: the code Runs but the commands are not transmitted to the Robot (that works in external mode)

- In External mode: the code will not Run due to error in the S-function of the Amplifier.

- I also tried to use the Real-Time synchronization block (after choosing the Normal mode), but still the Robot can not see the sent signal.

Is there a way to make the whole system works on a single computer? Thanks

[Kaustubha Govind]

Which library does the Amplifier block come from? Perhaps it is not supported for code generation?