can I read the chassis temperature of a cRIO in Scan Mode?

[JimMacD]

I'm trying to create a monitoring section of my VI that monitors the status of the cRIO 9022 and backplane (9104) that i am using. I have figured out how to monitor memory, CPU usage, and input power supply voltage.

I know that you can monitor the chassis temperature using the FPGA options, but I want to keep my cRIO in Scan mode. Is there any way to access the chassis temperature probe from scan mode?

[Andrew_E]

Hello, it does not appear that what you want is a functionality currently. You can always put your system in hybrid mode and only take in the input for chassis temperature directly from the fpga.

Regards,
Andrew Eddleman

[JimMacD]

Ok. what is the correct procedure to put the backplane in Hybrid mode?

also, I have read some posts on this where users have encountered problems with running the backplane in hybrid mode. how stable is it?

[jareds]

Hi JimMacD,

This is a good tutorial on putting a backplane in Hybrid mode. I haven't personally run into or heard of any problems with running in Hybrid mode.  It might take a little longer to compile, but that's about it.

[JimMacD]

Thanks, i will check that out.

[JimMacD · Accepted solution]

I have found the solution I was looking for. NI has built a VI to get the temperature of the cRIO but it is not easy to find or out in the open.

It is located here:

c:\Program Files\LabVIEW 8.6\examples\CompactRIO\Controller Specific\9022 Voltage and Temperature Monitor\cRIO-902x Support Files

The "cRIO-902x Support Files" is a library containing 2 VI's used for the voltage monitor sub-VI, and a third VI called "Get Board Temperature.vi".

Simply drop that into the cRIO application and the Vi outputs the temperature of the cRIO CPU board in °C.