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E-10 Appendix E—Barcodes
•
SOH AzL1
enables barcode printing and honors line feeds.
SOH AzL1
is commonly used where vertical paper motion is controlled with form
feeds.
•
SOH AzL2
enables barcode printing and discards line feeds.
SOH AzL2
is commonly used where vertical paper motion is controlled with line
feeds only. In an application such as a report program generator,
SOH
AzL2
preserves the RPG's expected positions of page endings and
headers.
Both commands perform the same function, with the following difference:
SOH AzL2
calculates the number of lines required to print the barcode
symbol, and human readable line, if any, then calculates the comparable
number of line feeds at the line spacing in use prior to the start of barcode
printing, and then eliminates that number of line feeds minus one from the
text following the barcode. For example, if you specify a barcode symbol
3
/
4-
in. high, and if the text line spacing is set at 6 lines per in., a total of
four lines plus a fraction of a line is required to print the barcode. The
fraction of a line is rounded up, for a total of five lines. This number of line
feeds, less one, is discarded; therefore, the next four line feeds after the
barcode
SOH AzL2
are discarded.
BARCODE DATA
This section provides information on entering barcode data, including
:
•
Valid characters for each type of barcode
•
How to enter barcode data
•
Adjusting the width of the quiet zone
•
Spacing
•
Controlling the placement of PostNet barcode symbols
•
Error checking
•
Number system characters