cRIO Wire becomes double but I use fixed-point

[bebin]

Hi everybody,

     I've been searching for examples to try to understand why a wire I'm using becomes to double type. I thought it was because the number of bits was higher than 64 bits (LabVIEW doesn't process 64 bits with fixed-point). Can someone give an idea of why is this happening?  Watch the images below to see what's the wire wich causes conflicts. The constants have the value of 1 because I tried to use the minimum bits number and due the operations have in the end a word lenght higher than 64 bits. If you can lead me to a link where someone could have a similar problem it's ok. Thanks in advance.

[CMal · Accepted solution]

When LabVIEW doesn't know which numeric representation to use, it generally defaults to floating point.  This happens in cases like this where shift registers are used and there's a mismatch of fixed-point represenations.  You can get around this by configuring the output data type of the multiply nodes.  Right-click the multiply node, select "Properties", then select the fixed-point representation you want on the "Output Configuration" tab.   This will enforce the data type.

[bebin]

The solution for this discussion was to change every VI to Single (SGL) format. Thanks for your answer CMal. I guess I'll choice your answer as the solution because I followed your suggestion. Thanks.