Hex String to Numeric conversion

[MogaRaghu]

I have the following String returned by a MODBUS instrument :

My embedded data is 0104 , 7530, 7530, 7530 which is shown inside green brackets.

I want to convert them into relevant numeric data of 260, 30000, 30000, 30000.

Have been trying to do that with a  VI as attached. Not getting there right. Any help would help !! 

( The attached VI is attempting to convert only the first data which is 0104)

[Michel_Gauvin]

Here's one solution to your question.

[GerdW]

Hi Raghunathan,

if you would receive your string as HEX data (as I suspect) it would be so much easier:

[MogaRaghu]

I tried the solution that you suggested... but the results were not as expected. Maybe I am doing something wrong. Need to study the code when I am more relaxed...

the code in LV12 is attached. 

[MogaRaghu]

Hi GerdW,

Yes if it was in Hex it could have been simple. But the feed is from a TCP read. 

[crossrulz]

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Raghunathan wrote:

Yes if it was in Hex it could have been simple. But the feed is from a TCP read. 

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It doesn't matter where the data is coming from.  All that matters is the format of the data from the read.  That information is what people have been asking for.

[MogaRaghu]

The data format is string. A point I thought to emphazise by saying its from a TCP Read - which as per LV Help is a string.

[crossrulz]

The string is just an array of  bytes.  What is the format of the data in this byte array that shows up as a string?  I recommend you get a normal message from your instrument and save that string data to a file and post the file.  Also tell us what you expect the output to be.

[MogaRaghu]

Finally the solution.

Maybe from an expert programmer point of view, not very smart or compact code but nevertheless does the job. The project can atleast proceed. 

( Possibly the Indexes can be taken as an array and a FOR loop can make the code small and compact )

[GerdW]

Hi Raghunathan,

yes, a VI which does the same things by copying code again and again is not very smart…

One more suggestion:

Hint: You should always get the habit of showing the string display mode, especially for your strings containing hex formatted numbers…