Read PDF417 Code FAQs

NI Vision Builder

Identify Parts

Read PDF417 Code FAQs

Q: Why is the Code Read control empty?

Make sure Barcode Type is set correctly and the region of interest encloses all of the bars.

Q: Can I adjust the parameters for finding the code?

No. The algorithm that Read PDF417 Code uses is adaptive and can find the code even when the image contains a slight light drift along the barcode.