User`s guide

User Datagram Protocol (UDP)
3-19
UDP Receive Block
The Receive block has two output ports. The first port is the actual output of
the received data as a vector of
uint8 while the second one is a flag indicating
whether any new data has been received. This port outputs a value of
1 for the
sample when there is new data and a
0, otherwise. The default behavior of the
Receive block is to keep the previous output when there is no new data. This
behavior can be modified by the user by using the second port to flag when
there is new data.
The Block Parameters for the Review block are shown below.
The
IP address to receive from can be left with the default value of 0.0.0.0.
This will accept all UDP packets from any other computer. Otherwise, if set to
a specific IP address, only packets arriving from that IP address will be
received. The
IP port to receive from is the port which the block will accept
data from. The other end of the communication will have to send data to the
port specified here. The output port width is the width of the acceptable
packets. This may be obtained when designing the other side (send side) of the
communication. The sample time may be set to -1 for inheritable sample time,
but it is recommended that this be set to some specific (large) value to eliminate