Hioki sample app rounding data for graph

[Bendys]

Hi everyone,

 Im quite new in labview and more than creator, Im a user. I am using Hioki IM3536 sample application for external measuring and saving data from the meter. Sadly I dont have enough time to learn how to work with labview in the block diagram so for you answer for my question will be surely quite simple but for me it would take hours to find out the solution.

This is how my problem looks like, you can see that the yellow line (phase) does not have any digit values, its rounding the values somehow in the process of trasnfering from meter to the graph. There are two ways to export data from that sample app. By exporting from graph to excel, or saving directly to excel on the third tab. When I do both, I can see that the graph is rounding and not using digits and the direct values saved to csv has all digits I want.

Could someone guide me to turn off the rounding? Or change it for me.

Here is download link for the driver (sample app)

[GerdW]

Hi Bendys,

attaching a scaled-down version of your image effectly prevents us from detecting interesting facts.

Do you mind to attach an image where we actually can READ some values?

Which decimal separator do you use in your OS?

Edit:

After checking the linked ZIP file: Please check the output of "Measure" VI!

Does it provide the measurement values with digits as wanted?

[Bendys]

Hi GerdW,

 thank you for your answer. Ye that picture is quite small, I thought it will be bigger. I'm attaching it to this post.

I will try to search for the "Measure" VI. But as I mentioned. Im just using the software, i did not create it so I cant orient very well in it. It can take some time.

Decimal separator in my Windows is " , "

[Bendys]

I've opened the measure.vi while doing the measurment. In the collum Output Str, there are full numbers with the digits, in the second collum Output Val there is always the first number, all digits are zeroes plus the exponent. Ad the bottom Output is:  "475.364E+00, -88.796, 2.10365E-03" , so with digits and everything

Edit: Attaching the Measure.vi screen

[GerdW · Accepted solution]

Hi Bendys,

now I can see what I wanted to see in your image.

Change the decimal separator from "," (comma) to "." (period) in your OS settings. The period is used as standard decimal separator char with English - and English is the "language" your measurement device talks! Then restart LabVIEW and everything should be ok!

In the long run you should change that device driver to allow for any OS setting by using more advanced string-to-number conversion routines…

[Bendys]

Perfect! It worked! Thank you GerdW very much, it also solved my second problem. The meter sended data like 12kOhm, then it slowly decreased bellow one kiloOhm and it started sending 900. But the program received only number string: 1.1 ; 1.01. 999 ; 998 ; 997 etc... 😄 but this somehow fixed it.

[GerdW]

Hi Bendys,

but this somehow fixed it.

It's not fixed "somehow", it's fixed by basic understanding of string-to-number conversion!

Advice: when working with (external) measurement devices always set your computer to use the period as decimal separator. It avoids of lot of hassle. (But be warned: it also hides bugs in your software as you have recognized on your own…)