Printronix P5000LJ Series, Programmer'S Reference Manual

Page: 31 / 304

Bar Codes
31
Printing Multiple Labels on the Same Line
Printing more than one label on the same line involves no more than
positioning the cursor and sending the data for each label to be printed. Since
the termination of the bar code data sequence (signalled by an upper-case Z)
causes the bar code to be printed and a carriage return to be executed, all of
the label information must be sent in the same escape sequence. The
following example shows an escape sequence used to print three labels on a
single line:
ESC*z5c<label1>z20c<label2>z35c<label3>Z
ESC*z5c Moves cursor to column 5
<label1> Bar code data
z20c Moves cursor to column 20
<label2> Bar code data
z35c Moves cursor to column 35
<label3> Bar code data
Z Initiates printing
Printing Bar Codes with Text
When printing bar codes with text, since the printer automatically generates a
carriage return and line feed at the end of the terminating character (upper
case Z), potential problems exist. As a general rule, for each line of bar code
mixed with text, send the text information first, followed by a carriage return
without a line feed (ASCII 13), and then overlay the bar code. (The carriage
return is required so that the bar code cursor position will be correct.) The
following example illustrates how to print text and bar codes on the same line.
This example involves a three-line bar code (and three escape sequences) as
shown below:
ESC*z0v25c1q<12345>Z
ESC*z0v Selects Code 3 of 9
25c Moves cursor to column 25
1q Specifies header placement above label
<12345> Bar code data
Z Enables printing this portion of the bar code
ESC*z75CThis is textCRESC*z0q25c<12345>Z
ESC*z75C Moves cursor to column 75
This is text Text for right of bar code
CR
Carriage return without a line feed
ESC*z0q Disables header for this portion
25c Moves cursor to column 25
<12345> Bar code data
Z Initiates printing this portion
ESC*z25c0q<12345>Z
ESC*z25c Moves cursor to column 25
0q
Disables header for lower portion
<12345> Bar code data
Z Initiates printing for lower portion of label