Comparison of matrix FPGA by element wierdness

I have an application where I am comparing limits to the input values of two strain (OR-9237) inside an FPGA cards making a conditioning of signals for a subsystem in a larger machine.

Process boundaries are sent to RT as a table and compared to a table of "raw" data entry

Data entry-

Comparison of limit-

I do one per element to the "GOLDEN table" and I realize that this may or may not be more effiecient as a comparison aggregates; However, the strange thing that happens is that the sixth element of the array to limit triggers a "load error" for the fifth element of the input array.

I send you the limit directly from the RT - PS

Note that the verified calculation by reading the value defined in the FPGA. This set and get here seem to line up. That is to say, if you set the element 3 MaxLoad % or LCNominal(mV/V), it is validated on the FPGAMaxLoad output. I wonder if this has anything to do with the implicit conversion between floating-point single point-to-point fixed?

If someone has had this experience, I would be grateful feedback on what is happening.

I really want to engage in the DMA channel as it is a very small set of six elements that one, it seems more kill to use a DMA channel just for this operation.

Thank you

Drew


Tags: NI Software

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