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FPGA Control on CompactRIO-error code 91

Hi! I am using the FPGA Control on CompactRIO Sample project with cRIO 9063, NI 9205 and NI 9264. I have already adapted the sample project to my hardware. The only changes that I have made to the project was using PD control algorithm. However, when I tried compiling the FPGA Main.vi, the following error pops-up: LabVIEW FPGA called another software component, and that component returned error code 91 (the data type of the variant is not compatible with the data type wired to the type input).

 

Other VIs (RT Main.vi and UI Main.vi) can be compiled and run. So, I am not sure where exactly to fix the error as the FPGA Main.vi does not use any variant.

 

Thanks!

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Hi NA,

 

several questions:

- Which LabVIEW version?

- Why don't you attach your VI/project?

- Why don't you show just a snippet of your FPGA VI?

- Which other "software component" is called?

Best regards,
GerdW


using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019
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Hi GerdW,

 

Thank you for your response.

 

I am using LabVIEW 2015. Please find attached project and the error message. As for your last question, I don't know which other software component is called.

 

Thanks,

NA

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Message 3 of 5
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Seems to compiling just fine for me.  Are you sure you have the Xilinx Vivado compiler installed?


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Hi crossrulz. I started a new project with the same configuration, and it turned out okay. No problem with compiling. So, I'm going to stick with the new project. But it's weird that the old project can't be compiled. Anyway, thanks!

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