USB thermometer works in Hyperterminal & MAX, but not in my VI

I have USB (Omega TJ - USB) thermometer.  I contacted with her success in Hyperterminal.  When I try with MAX, it usually starts working after the second attempt to read/write.  But even if I put the termchar 0xD and termchar_en to True, I still have to type my writing as 'C' back ' 20.2 c ' (20.2 C being the temperature) any idea why this happens?

In addition, I go ahead and make my VI, very similar to that found in the labview tutorial - image shown here: http://zone.ni.com/cms/images/devzone/tut/a/e09bfd41228.gif I put it for baud: 38400, 8n1.  and I also write 'c', but I get the error 1073807339.  I tried to change the buffer without change in the results.

I thought it would be a relatively simple task, but it seems that I am bad, or overlooking something simple.

Hi Chknrckd,

Also what could be the problem, is that the way hyperterminal sends characters (when you type words). LabVIEW will send a string at the same time, while that hyperterminal sends each character at a time.

More information can be found here:

Why Test panels MAX works my Instrument Serial in Hyperterminal but not in LabVIEW or VISA work?

http://digital.NI.com/public.nsf/allkb/171D2D70CFB66E74862571390062D12B

I hope this helps!

Tags: NI Hardware

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