Error occured while External Mode MEX-File 'ext_comm'

Hello Matlab Support,

I am trying to run an S-function block which is programmed to look for the connected omicron equipment and lock it for further commands. The decvice is connected through TCP/IP interface. The s-function block runs fine in the normal mode. In order to run the model in external mode, I am able to build the model without any errors but when I try to connect to the target, I get the following error:

Error occurred while executing External Mode MEX-file 'ext_comm': An error occurred attempting to open an rtIOStream. More detail may be reported in the MATLAB command window

The command window shows nothing as an error except only this message: Attempting to establish connection with hostname 'null' through port 17725.

Looking forward to your reply..

Thanks

Mansoor

The command window

Answer 1

[Slf Sr]

Hello,

The question was posted long time ago but for people reading here, I think this answered question is similar : https://fr.mathworks.com/matlabcentral/answers/103456-why-do-i-get-an-ext_comm-error-when-i-try-to-run-a-model-in-external-mode-on-a-zynq-board-with-emb

Regards