Allen-Bradley 2755-HDG-4 User Manual page 67

Unknown Characters
Unknown characters are characters not recognized by the scanner. When
SEND BAR CODES WITH UNKNOWN CHARACTERS is enabled
(default), all decoded bar code data is transmitted except for the
unknown characters. If this option is disabled, bar codes containing one
or more unknown characters are not transmitted.
Intercharacter Delay
Setting an intercharacter delay provides the host time to perform
processing tasks between characters. The default is short delay (5 msec).
The options are:
•
Short 5 msec delay (default)
•
Medium 50 msec delay
•
Long 99 msec delay
Communication Setup (Cable Configuration) 4-11
Publication 2755-6.2