cRIO standalone application

[nicola_rosso_96]

Hello,

I'm trying to develop a cRIO standalone application using the cRIO-9054: the target is to start the data logging procedure without the need to maintain the connection to a PC. Is there a way to control the C-Rio without any input from the LabView environment? How can the data-logging start with no LAN connection between the C-Rio and the PC? 

[crossrulz]

You could use a digital input to trigger logging.

[Bob_Schor]

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@nicola_rosso_96 wrote:

Hello,

I'm trying to develop a cRIO standalone application using the cRIO-9054: the target is to start the data logging procedure without the need to maintain the connection to a PC. Is there a way to control the C-Rio without any input from the LabView environment? How can the data-logging start with no LAN connection between the C-Rio and the PC? 

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The cRIO can "see" whatever is connected to it.  In particular, it can "see" the data that it is recording, and (possibly) can "see" a clock.  So if your criterion to start data-logging is data-based (i.e. "start recording when the voltage exceeds 3V" or "start recording when the S/N ratio is > 2.3"), the cRIO can "control itself".  You can also, say, connect a push-button to a DIO line and say "Start acquisition when I push this button".

Bob Schor

[Thomas444]

You can trigger DAQ in multiple ways:

• After startup
• Time elapsed since last DAQ
• Digital trigger signal is rising/falling (through DI or AI modules)
• Your measured signal has a specific characteristics (start DAQ only if signal RMS > limit)
• Network communication

Luckily your 9054 RIO has PFI bus (the golden connector) which you can use (and connect it to FPGA too, but it is a little bit tricky) as a digital input. Having a button, you can come up with a simple circuitry which can be used for triggering DAQ.