Error 1320 on Open FPGA VI Reference Function

Updated Dec 16, 2019

Reported In


  • CompactRIO Controller
  • myRIO-1900


  • LabVIEW FPGA Module
  • LabVIEW Real-Time Module

Issue Details

My real-time VI shows a broken run arrow.
I get the following error message on the Open FPGA VI Reference Function:

1320 : Propertynode (arg 2) in>>>>>>


This error massage can occur, when you already used the Open FPGA VI Reference Function,
and afterwards changed something on your project or the used VIs.

Often, the problem can be solved by deleting the Open FPGA VI Reference Function completely,
and then configure it again.

Additional Information

The same troubleshooting can help, when erros occur on other VIs from the FPGA Reference palette on your real-time block diagram.