Example Code

IEEE 754 U32 to SGL conversion

Code and Documents


I have added a LabVIEW IEEE 754 conversion function here to convert a 32 bit information (array of four U8 elements) into SGL and vice versa. This function provides the same functionality like the IEEE 754 Converter (JavaScript), V0.13, shown on http://www.h-schmidt.net/FloatConverter/IEEE754.html.

I have added this conversion VI as an example here because I have searched for a LabVIEW converter but haven´t found one (maybe because it´s that simple to build one in LV). This function might help to transmit/receive data (Arrays of U8) by making use of the UDS palette within the Automotive Diagnostic Command Set LabVIEW Addon. DBLs could also be converted by adding little changes to the VI.

It´s a LabVIEW 2014 SP1 vi.

Have fun!

Example code from the Example Code Exchange in the NI Community is licensed with the MIT license.

Knight of NI Knight of NI
Knight of NI

Instead of the Type Cast, you should consider using the Flatten To String and the Unflatten From String.  The Flatten/Unflatten allow you to choose the endianess of the value.  This will come in particularly handy when dealing with values coming from Matlab (which uses Little Endian while LabVIEW uses Big Endian).

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