I Get Error -201390 and Computer Loses Connection to cDAQ

Updated Sep 2, 2019

Reported In


  • cDAQ-9185
  • cDAQ-9184
  • cDAQ-9178
  • cDAQ-9188
  • cDAQ-9189


  • NI-DAQmx

Issue Details

I am running a program using an ethernet cDAQ and after a day, I get the error below and I do not know why.


This error presents when the ethernet connection is lost between the computer and the cDAQ chassis. There are different ways to avoid the error:
  • Set your PC ethernet power settings to be always on.
  • Ensure you ethernet connection is not being affected by a router or switch limiting data transfer.
  • Change cables.
If all of this fails to fix the problem, it is always recommended - even if it works - to setup appropriate error handling in order to recover once the connection is restored. You will need to stop and restart the task. Refer to the related links for an example.