Ethernet cDAQ Chassis Grayed out in MAX or has Network Errors

Updated May 28, 2019

Reported In


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


  • NI-DAQmx
  • NI-DAQmx 17.1
  • NI-DAQmx 18.1

Issue Details

I am trying to connect to an Ethernet chassis in Measurement & Automation Explorer (MAX), and the chassis is not detected or grayed out. I also can not add it to MAX and it seems like there may be network connection issues though everything looks properly setup. When I try and press Add Device I get one of the following errors:
  • Error -201401: Retrieving properties from the network device failed. Make sure the device is connected.
  • Error -201250: Connection to the network device has timed out. The network device did not respond properly for a period of time. If timeouts persist, contact your system administrator.
  • Error -201252: Device could not be found on the network. This usually indicates an incorrect hostname or a DNS failure


  • Make sure you are using a version of NI-DAQmx that is compatible with your device. Check NI-DAQmx drivers to get a list of the most recent versions of NI-DAQmx. Check the readme of the driver to ensure that it supports your cDAQ chassis.
  • If you do have the correct driver installed, there may be a network connectivity issue  cdaq 9185 with your Ethernet device.
  • You may need to reset the network adapters on your computer.
  • If the chassis is grayed out and modules are connected to it. Click Add Device on MAX to add the device and the modules connected to it.
  • Ensure no other network devices are using the same IP address.

Additional Information

Support for the cDAQ-9185 and cDAQ-9189 chassis was only added in NI-DAQmx version 17.1. This can be verified by checking the Software Support for CompactDAQ  page and selecting either the  cDAQ-9185 or cDAQ-9189 chassis from the drop-down menu.

Before upgrading your version of NI-DAQmx, it is important to verify 3 things:
  • The version you are upgrading to supports any older hardware you may be using. This can be verified by looking at the readme on the driver's download page.
After the cDAQ chassis is no longer greyed out, you may run into Error -50251, which is addressed here .


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