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Do I Need to Compile a Blank Bitfile for NI-XNET in VeriStand

Updated Apr 14, 2022

Reported In

Hardware

  • NI-9862
  • NI-9861
  • C Series CAN Interface Module

Software

  • VeriStand

Issue Details

I am using a NI-986x (XNET module) in my cRIO. Previously, I had to create a blank bitfile to use these modules in my VeriStand system. Is this still the case with the 2015 release of VeriStand and CompactRIO?

Solution

VeriStand 2015 and Later

As of VeriStand 2015 and CompactRIO 15.0 you are no longer required to compile a blank bitfile for cRIO- 903x or cRIO-906x targets to use NI-986x series XNET modules. 

If the system only contains NI-986x modules, then the controller should be set to Scan Mode, as seen below:

 
Also, the 986x Support tab of the Port Settings should be left blank when configuring the XNET port.
 

Before VeriStand 2015

The next step depends on whether you are using just the NI-XNET module in VeriStand, or if you plan to use other C series modules as well:

Only Using NI-XNET Modules in VeriStand

  1. You will need to create a LabVIEW project with your CompactRIO and have your XNET CAN module in the project in the correct slot you want to use it in. 
  2. Compile a bitfile under the FPGA build specification off of a blank FPGA VI.  This will create the necessary ties between the XNET module and the backplane to make sure communication works.

Using NI-XNET and other C series Modules in VeriStand

If you plan to use other C-Series Modules in FPGA Mode, you will need a LabVIEW project with the FPGA modules added to create a bitfile. The NI 986x modules should be included in the LabVIEW Project used to compile the bitfile. In this situation, the bitfile will need to be pointed to in the 986x Support tab of the Port Settings. Additionally, the controller should be set to FPGA Mode as the system now uses an FPGA bitfile.