c-Rio getting to fault mode during power cut/interruption

[AVP2484]

Hi everyone. We are having a performance tester machine running with C-Rio . We are facing an issue abruptly which is the data in C-Rio is getting erased during power-cut interruptions. Sometimes the analog input channel is not reading the value from the field i/os. During that time, if we power off/on C-Rio , then value gets read.We also connected the power supply of C-RIo thru UPS but still we are facing the same issue during power changeover. What could be possible cause for this issue? Is there any way to correct this issue in C-Rio?

[AVP2484]

Has anyone this kind of issue? Kindly give some guidance for understanding/clearing the issue.

[Hugo_Hauet]

Hello AVP2484,

To prevent the loss/corruption of data for the cRIO during a power-cut/changeover interruption it is possible to use the internal FPGA to trigger the watchdog when those interruptions occur. For more details: it can be aware as to when the control application or power is down and perform several actions, like setting IO lines into a safe state and rebooting the controller to preserve the data.

You can go through this link to help you get started with watchdogs: Reset cRIO using Watchdog Timer.

Or you can open LabVIEW and go under "Help" then "Find Examples" and search for "watchdog”.  You can pick one of the VIs, apply the condition of triggering and the code to save your data from corruption.

Have a good day,
Hugo