Bar Code Command Format - Printronix L7032 Programmer's Reference Manual

Chapter 3

Bar Code Command Format

Bar Code Command Format
Bar code commands are Extended Graphics commands which must occur
within the Graphics Mode and must be introduced by an SFCC and one of the
four alphanumeric commands (^M, ^V, ^E, and ^U). Data provided in the
alphanumeric command sequence identifies specific height, width, and
justification information used to define bar code length (height) and position.
Complete alphanumeric command information is explained in Chapter 2.
NOTE: Throughout this manual, the caret (^) is used to represent the Special
VGL offers a choice between two types of bar code command formats which
are described on the following pages: Standard (^B and ^C) bar code format,
and IBARC, (a QMS Version II command). Two advantages of IBARC are a 4-
way rotation, not 2-way, and dot or printer dot resolution for variable ratio bar
codes. Neither the Standard nor IBARC format offers significantly more or
less features; both formats accomplish the same task. The format you select
is a matter of personal choice. In each bar code section throughout this
chapter, each of the command parameters is fully described and examples
provided using the standard bar code format (^B and ^C).
You can also print high resolution bar codes. With the control panel menu
option, "Var Ratio Barcd" set to "High Resolution", bar code variable ratio data
can be specified in printer dots. You can use this option in either high or
normal resolution with the IBARC command. (This option is ignored for ^B
and ^C which always use low resolution.)
If "Var Ratio Barcd" is set to "Low Resolution" (the default), the bar code
variable ratio data is interpreted as line matrix printer dots (60x72 dpi).
NOTE: When using variable ratio bar code commands, you must ensure the
The bar code command and associated parameters for standard bar codes
are described on page 163. IBARC, bar codes, associated parameters and
examples are described on page 164.
NOTE: Each bar code parameter is visually separated by spaces, and
162
Function Control Code introducer and terminator for graphics and bar
code commands. Be sure to use the appropriate control character for
your VGL configuration.
"scanability" of your bar codes, including toner spread compensation.
Make sure the variable ratio conforms to the specification.
optional parameters are marked by paired brackets [ ]; do not enter
these spaces or brackets in your command sequence; they are
provided throughout the manual for clarity in distinguishing
parameters. Italicized text represents a variable parameter for which
a value must be inserted. Command parameters not italicized must
be input exactly as shown.