ocr reads 255 characters max?

[andrej]

Hi!

I have LV 8.5.1 and NI Vision 8.5.1.

Function "IMAQ OCR Read Text 3" reads only first 255 characters in string. My string is 300 characters long and I set ROI to cover all 300 characters. Same thing happens in Vision Builder 3.5. Is this a bug? Or is there any property that I have to set to read more than 255 characters?

Thanks,

andrej

[e2m0i0l7 · Accepted solution]

It is not a bug, that is the maximum number of characters that can be read in one instance of that function.

If you want to read a string of more than 255 characters, simply use the same function more than once, with different regions of interests, and in the end concatenate the resulting strings.