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cRIO-9073 only with Labview 8.6? Data logging ?

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So ScanMode compared to FPGA is slower (max 1khZ) and takes a little bit of CPU-time while scanning all the I/Os. This is the main difference as far as I understood that article. I actually need only data acquisistion at 1-10 Hz, so ScanMode should work fine, as long as I don't need FPGA to save acquired data on the internal memory of the cRIO.

 

Thanks a lot guys.

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The cRIO-9073 is one of the Controller//Chassis integrated targets. This line of RIO products was first supported on the NI-RIO 3.0 driver which offers minimum support for LabVIEW 8.6.

 

From an onboard datalogging standpoint, the cRIO product line has 2 options:

 

1. Log directly to the onboard flash memory, which you have identified as 128MB on the 9073. This onboard memory varies from controller to controller, and may go up to 4GB, depending on the product. 

 

2. Another onboard storage offering includes the NI-9802 SD memory module. This module contains 2 slots that support up to 4GB per slot, and may be programmed for streaming directly in the FPGA VI. 

 

With respect to the discussion of Scan Interface, please see the article linked below for a detailed outline of the Scan Interface. The FPGA module is not required to work with the Scan Interface, and will allow integrated File I/O on the RT host directly to the flash memory. 

 

Using NI CompactRIO Scan Mode with NI LabVIEW Software
http://zone.ni.com/devzone/cda/tut/p/id/7338

 Thank You,

 

Pcorcs

 

Patrick Corcoran
Application Engineering Specialist | Control
National Instruments

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Andband wrote:

So ScanMode compared to FPGA is slower (max 1khZ) and takes a little bit of CPU-time while scanning all the I/Os. This is the main difference as far as I understood that article. I actually need only data acquisistion at 1-10 Hz, so ScanMode should work fine, as long as I don't need FPGA to save acquired data on the internal memory of the cRIO.


Almost there, but you do not need the FPGA toolkit to save on the cRIO's internal flash - in fact, the FPGA has no direct access to any files or filesystem.  The functions the FPGA can accomplish are relatively limited but run at high speed.  Logging to disk is handled by LabVIEW RT and the real-time operating system.

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Pcorcs, you are saying the NI-9802 SD memory module supports 4GB per slot? Is this true? I thought the specs were 2GB per slot for 4GB total.

 

Thanks.

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My apologies,

 

I mis-read the specification on the 9802. You are correct 2 Gb per slot for a 4 Gb total per module. Again sorry for the confusion.

 

Cheers, 

Patrick Corcoran
Application Engineering Specialist | Control
National Instruments

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