Is the two packet limit on UDP communication using xPC Target 2.7.2 (R14SP2) for one UDP block or for one UDP port?

When using xPC Target for UDP communication there is a limit on the maximum number of UDP packets waiting to be read as mentioned in the 'Note on UDP Communication' section of the xPC Target documentation. I would like to know if the limit is just for one UDP block or for one port of UDP.

Answer 1

[MathWorks Support Team]

This enhancement has been incorporated in Release 14 Service Pack 3 (R14SP3). For previous product releases, read below for any possible workarounds:

This is an error within the documentation for xPC Target within the "UDP Communication" section. The documentation should read as follows:

"The UDP communication has been set up to have a maximum of two UDP packets waiting to be read. This applies to one UDP port, which corresponds to one UDP Receive block. All subsequent packets are rejected."

Each time a UDP Receive block is inserted in a model, the software instantiates a new queue in the xPC Target kernel.