[sim, PacketFramework] = ld_SendPacketMux(sim, PacketFramework, Signal, NValues_send, datatype, SourceName, Demux)
Stream data - block
Signal - the signal to stream
NValues_send - the vector length of Signal
datatype - only ORTD.DATATYPE_FLOAT by now
SourceName - a unique string identifier descring the stream
Demux - information for the receiver on how to demultiplex the packet into individual signals.