Preamble/Postamble - Datalogic QuickScan QS6500 Product Reference Manual

Preamble/Postamble

Similar to the Prefix/Suffix, up to 22 ASCII characters may be added as a
preamble (in a position before the bar code data) and/or as a postamble
(in a position following the bar code data) as indicated in
Figure 5-3. Preamble and Postamble Positions
Prefix Symbology Preamble
Example: Setting a Postamble
In this example, we'll set a postamble for all symbologies.
1. Determine which ASCII character(s) are to be added to scanned
bar code data. In this example, we'll add the percent character
('%') as a postamble.
2. Scan the START bar code.
3. Scan the SET POSTAMBLE CHARACTER(S) bar code.
4. Reference
Appendix A, ASCII Conversion Chart
assigned to the desired character. The corresponding hex number
for the '%' character is 25. To enter this selection code, scan the '2'
and '5' bar codes from
5. Scan the SET bar code to accept the digits scanned.
6. Scan the TRANSMIT POSTAMBLE bar code to allow transmis-
sion of the postamble.
7. Scan the END bar code to exit Programming Mode.
8. The resulting message string would appear as follows:
Scanned bar code data:
Resulting message string output: 12345%
Product Reference Guide
Data Editing Overview
ID Code Length Bar Code Data
00 - 22 Characters (ASCII)
Appendix B, Alpha-Numeric Pad
12345
.
Figure 5-3
Insert Groups
ID Postamble Sufffix
, to find the hex value
.
5-5