CompactRIO C Series Modules Not Showing in NI MAX

Updated Aug 5, 2022

Reported In


  • CompactRIO Controller
  • C Series Digital Module


  • Measurement & Automation Explorer (MAX)

Issue Details

I am able to see my CompactRIO (cRIO) under Remote Systems in NI Measurement & Automation Explorer (MAX).  However, when I expand Devices and Interfaces under the cRIO, I can't see my C Series I/O modules. Why can't I see the C Series modules in MAX?


Only cRIO controllers with NI-DAQmx capabilities (cRIO-904x and cRIO-905x) and cDAQ systems provide access to C Series modules through NI MAX. If you are using a cRIO-904x or cRIO-905x, please ensure that  NI-DAQmx is installed on your system. If DAQmx is not installed, follow the Install NI Software on Your CompactRIO Controller article. Note: If you experience problems installing NI-DAQmx, you may need to reformat your cRIO device and reinstall the software.

If you are using any other CompactRIO controller, C Series Modules will not be listed in NI MAX. Instead the two potential options you have for detecting the Modules are listed below:

Additional Information

Each C Series I/O module interfaces with the FPGA. Therefore, NI-MAX is not able to determine which C Series modules are inserted into the cRIO chassis.  Once you create a cRIO project , LabVIEW will download a personality to the FPGA that detects which modules are inserted in the cRIO chassis and you will have an opportunity to detect inserted modules to view in the project explorer.

A cRIO without NI-DAQmx capabilities will enumerate in MAX similar to the following image: