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can the 9403 measure in a single cycle timed loop?

Hello all,

 

I am trying to measure the frequency of a digital signal using the NI 9403. I based my code on the example I found on http://www.ni.com/white-paper/14549/en/ to create a simple VI on my FPGA that measures the frequency.

 

However, when I try to compile my VI, Labview throws me the error:

 

FPGA I/O Node: ": Mod8/DIO20 (Read)

The selected object takes one or more clock cycles to execute.

Remove the object from the single-cycle Timed Loop or replace the single-cycle Timed Loop with a While Loop.

 

The example on the internet does show a read in a single cycle timed loop. Now I wonder, is this something that is impossible with the NI 9403? And if not, how can I fix my code to work on the NI 9403?

 

 

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Hi Arvest,

 

Unfortunately the 9403 does not support Single Cycle Timed Loop operations. 

 

NI 9403 (FPGA Interface)

http://zone.ni.com/reference/en-XX/help/370984R-01/criodevicehelp/crio-9403/

 

Sorry about that.

 

Pete

NI Applications Engineer

Certified LabVIEW Architect
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