The uDPSend block sends to the local port 10002.
The uDPReceive block starts a background process that
listens at port 10002. Consequently, the uDPReceive
block receives what the uDPSend block sends.
Note: There is no causality between the
uDPSend block and the uDPReceive block.
Therefore the execution order of the blocks is not determined.
Additionally, the uDPReceive block starts an own
receiving thread, so that the time the data was received is not
equal to the time the external function within the
uDPReceive block was called. This indeterminism may
also show up in the plots.