User`s guide

3 Working with Real-Time Workshop
3-44
External mode supports communication via TCP/IP, serial, and custom
transport protocols. The
MEX-file name field specifies the name of a
MEX-file that implements host and target communications on the host
side. The default for TCP/IP is
ext_comm, a MEX-file provided by
Real-Time Workshop. You can override this default by supplying
appropriate files. See “Creating an External Mode Communication
Channel” in the Real-Time Workshop User’s Guide documentation for
details if you need to support other transport layers.
The
MEX-file arguments field lets you specify arguments, such as a
TCP/IP server port number, to be passed to the external interface program.
Note that these arguments are specific to the external interface you are
using. For information on setting these arguments, see “MEX-File
Optional Arguments for TCP/IP Transport” and “MEX-File Optional
Arguments for Serial Transport” in the Real-Time Workshop User’s Guide
documentation.
This exercise uses the default arguments. Leave the
MEX-file arguments
field blank.