Detect Network Disconnection Between FPGA and Host Computer cRIO

Updated Oct 15, 2021



  • CompactRIO Chassis


  • LabVIEW
  • LabVIEW Real-Time Module
  • LabVIEW FPGA Module

There are certain features of applications that relies on the network connection between 2 devices. Sometimes, this network can have drops which will lead to an unexpected behavior on the applications functionality, because of that this applications requires to monitor the connection status and act as quick as possible to change the system into a safe mode status.
In this article you will find the steps you need to take to open a FPGA/Host Watchdog timer that.

For this type of requirement LabVIEW, LabVIEW Real-Time and LabVIEW FPGA offers some examples that addresses this issue. 

To find the FPGA/Host Watchdog timer example you need to follow this steps:
  1. Make sure that you have LabVIEW , LabVIEW Real-Time Module and LabVIEW FPGA Module
  2. Open LabVIEW and go to Help>>Find Examples
  3. Search for Watchdog, there are 2 examples, one for cRIOs and another for R series. Select the best that fit with your hardware setup.