Hello,
Are you using it with KUKA|prc or another software?
In any case, the error message tells you that there wasn't any communication happening for over 3 seconds.
Reasons for that may be a bad/overloaded connection (e.g. via WiFi), or possibly problems with the network cable or network adapter.
You could also take a look at the Task Manager if e.g. your PC's load is very high.
You could increase the timeout value in the mxA configuration, however 3 seconds is already very long, so I wouldn't really recommend that.
Best,
Johannes