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Modules in Ethernet cDAQ Chassis Grayed Out in NI Measurement and Automation Explorer (NI-MAX)

Updated Dec 22, 2023

Reported In

Hardware

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

Driver

  • NI-DAQmx 17.1

Issue Details

I am using an Ethernet cDAQ chassis and have installed the NI-DAQmx 17.1 driver or newer, but when I look at it in Measurement and Automation Explorer (NI-MAX), the chassis doesn't show any of the modules connected to it. However, it says its Status is "Connected - Running" and has a valid IP address. Even if I press the Refresh button, it seems like MAX can't find or detect the modules.

Solution

In order for the modules to appear under the chassis, please follow the steps below:
  1. Once you have selected the chassis, press the Add Device button.
  1. Reserve the chassis by pressing the Reserve Chassis button. You should now be able to see the modules. 
  1. (Optional) You can now log in to the chassis by pressing Log In if you need to make any changes to its properties.
Once you have reserved the chassis in MAX, it may be necessary to run a self-test in NI MAX or reset the cDAQ chassis using the Reset button in order to see the modules. Depending on your computer's network driver and configuration, a reset or self-test may also be required after restarting the computer.

Press Restart in NI-MAX to restart the chassis. You should then be able to see the missing modules.

If it doesn't appear after these steps, check the minimum driver version required for the modules.

Additional Information

Determine that you have the correct driver for this device. The cDAQ-9189 is not supported by versions of DAQmx prior to 17.1.

You must reserve the device to self-test it, reset it, or take measurements. If the chassis has not been reserved for exclusive access by any host, NI-DAQmx automatically does so at the time the chassis is added to the system.

Only one host may ever have exclusive access to a Network cDAQ chassis at any given time. Exclusive access prevents tasks on multiple hosts from interfering with the state of a chassis without any of the other hosts' knowledge.

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