Scanner of Code information bar appears automatically

Hi all:

I have a problem with a bar code reader, specifically Unitech AS - 10U.

Now my problem is this, I am trying to create a sub.vi which accepts the entry of a bar code scanner as if entering the keyboard, make sure that information is the right length and make on to the next step in the sequence. When I use "Barcode Scanner.vi" (see attached vi) it works as a standalone vi no fine no problem, but when I integrate this sub.vi in my main.vi it stops working (even if I paste the entire content of the sub.vi in the main.vi). I found that by using the button "Highlight the execution" in the block diagram and to probe the input as if by magic string make present, however, without this, the input remains empty string (this works in all cases).

So I tried to hit the forums and I came across "Prompt the user for Input" and it worked perfectly, only downside was that now I have to click on the OK button to accept the serial number I am trying to enter, so I changed to measure the length of the string and use that as the acceptance criteria to complete the while loop (see attached vi). Then bam, same problem, now it won't work unless I have the probe.

Can someone help me and tell me what I'm doing wrong, I tried searching the forums and have not been able to find someone who had the same problem, I did.

Thanks for taking the time to read my post, I appreciate it.

That will solve most of the distress, then STOP voting! use a value change event and exit if the length of the string is 6 to 9 characters. (Turn off too much packaging).

Tags: NI Software

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