Rockwell Automation 2755 2D Hand-Held Scanner - Manual (Page 52)

Configuring the Scanner 4–5
Publication 2755-6.4
Code 39 Options
Code 39 Full ASCII
The ASCII character set assigns a code to letters, punctuations
marks, numerals, and most control keystrokes on the keyboard.
The first 32 codes are non-printable and are assigned to keyboard
control keys, such as Backspace and Return. The other 96 are
called printable codes because all but Space and Delete produce
visible characters.
Code 39 Full ASCII interprets the bar code control characters ($ + %
/) preceding a Code 39 symbol and assigns an ASCII character value.
For example, when +B is scanned, it is interpreted as b, %J as ?, and
$H emulates the keystroke BACKSPACE. Scanning ABC$M
outputs the keystroke equivalent ABC ENTER.
Refer to Appendix C for a list of the Code 39 Full ASCII codes.
The scanner cannot autodiscriminate between Code 39 and Code 39
Full ASCII symbols.
Code 39 Check Digit
When enabled, this parameter checks the integrity of a Code 39
symbol to ensure that is complies with specified algorithms.