Turn off outputs when computer crashes or communication loss

[Hemlis]

Hi!

I am working on a monitoring and control system for a gas turbine for educational purposes.

I need to have some sort of safety system in case of communication loss between the computer and the cDAQ-9178.

As soon as something happens to the computer connected to the daq, all outputs needs to be set to 0.

Any ideas how i can manage that?

/Gideon

[crossrulz]

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@Hemlis wrote:

I need to have some sort of safety system

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Then a cDAQ is the wrong system.  You should be using a cRIO, like a cRIO-9066.

[Hemlis]

I have access to all the software i need to program the cDAQ 9178, can I use the same software with the cRIO 9066 or do I need something else?

Is there any difference in programming a cRIO compared to a cDAQ?

I found out that i could use the watchdog function om some of the DAQ.

Is there any drawbacks to using the cDAQ 9188XT with the watchdog instead?

[crossrulz]

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@Hemlis wrote:

Is there any drawbacks to using the cDAQ 9188XT with the watchdog instead?

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Ok, I did not know there was a cDAQ chassis that had a watchdog.  I would go this route if I were you.  There are some Watchdog functions inside of the DAQmx->Device Configuration->DAQmx Watchdog palette.  Once configured, just reset the timer whenever you do a read or something like that.