Hex to numeric value does not workl!!!!!!!!!!!

[RickH]

Hex to number doesn't work!!!!  I'm reading from a serial port.  I'm able to format the text to a display in hex, but the damn NI function hex_to_number doesn't work!!!! I've tried everything (including reading the worthless hints and discussions) and spent four hours without resolve?  What is going on?????????????????????????????????????

[ravis]

If you could explain your problem in more detail and/or post a screenshot of it someone might be able to help you 😉

[Dennis_Knutson]

If you have set your string control to hex display to see the correct characters, then you are using the Hex String to Number incorrectly. The function converts the ASCII characters A-F and 0-9 to a number. When you turn on hex display, that is not ASCII. To convert your non-ASCII cahracters to a number, use the type cast as shown below or String to Byte Array.

Message Edited by Dennis Knutson on 12-05-2006 11:57 AM

[RickH]

Dennis,

I'll try your suggestion, as what you mentioned makes good sense.  I couldn't get the answer immediately from NI tech support.  I would sent a screenshoot, but I can't host it on a server.

Thanks

Rick 

[Dennis_Knutson]

You don't have to host it on a server. You can simply attach it. See the 'Browse' button below this box. Click it and select the file to attach.

[RickH]

Dennis,

Close but no cigar!  This is my screen dump

thanks again,

Rick

[Dennis_Knutson]

Since you have a two byte response, you can't use the U8 as in the example I posted. Change the representation of the constant to U16.

[RickH]

Dennis,

That was only half the problem.  The other was using the debug probe which gave me -1.  I have reassigned the output for unsigned integer and this works fine.  Thanks again!!!

Rick