You can use cross probing between the signal in the AMD Waveform Viewer and the Simulink diagram to aid the debugging process.
To add a signal to the Waveform viewer, right-click the signal in the model and select AMD Add To Viewer. Simulating the design launches the Waveform Viewer as shown in the following figure.
Figure 1. Waveform Viewer
All signals in same clock domain use a similar color. In the
preceding figure: src_domain/Slice/Out1 and
dest_domain/Relational/Out1 are in
different clock domains.