Appendix A Programming Guide
A-33
S
Bar code ratio
This command selects one of the available ratios between wide and narrow
bars (spaces).
ESC * z P1 O
P1 = 2.0 ; 2.5 ; 3.0 ; default is 2.5
Note:
This command is not applicable to all bar codes; refer to table below.
Default values for module width and ratio:
Bar code
code No. type
Module width
Ratio
default
1)
variable
default
variable
0
Code 39
6
yes
2.5
yes
1
2 of 5 industrial
6
yes
2.5
yes
4
2 of 5 interleaved
6
yes
2.5
yes
102
EAN 8 SC 2
4
yes *)
fixed
no
106
EAN 8 SC 6
6
yes *)
fixed
no
109
EAN 8 SC 9
8
yes *)
fixed
no
122
EAN 13 SC 2
4
yes *)
fixed
no
126
EAN 13 SC 6
6
yes *)
fixed
no
129
EAN 13 SC 9
8
yes *)
fixed
no
142
UPC - A SC 2
4
yes *)
fixed
no
146
UPC - A SC 6
6
yes *)
fixed
no
149
UPC - A SC 9
8
yes *)
fixed
no
162
UPC - E SC 2
4
yes *)
fixed
no
166
UPC - E SC 6
6
yes *)
fixed
no
169
UPC - E SC 9
8
yes *)
fixed
no
180
Codabar
6
yes
2.5
yes
181
MSI
6
yes
2.5
yes
188
Code 93
6
yes
fixed
no
200
Postnet
fixed
no
fixed
no
210
Code 128
6
no
fixed
no
220
RM4SCC/KIX
fixed
no
fixed
no
1)
in
1
/
300
inch
*) for optimum readability module width should not be changed
Appendix A Programming Guide
A-34
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Start and Stop characters
For bar code types EAN, UPC, Code 93, Code 128 and Postnet the printer
automatically adds start and stop characters.
For bar code type Code 39, 2 of 5 industrial and 2 of 5 interleaved the printer
adds start and stop characters only if they are not generated by the system.
For bar code type Codabar the application has to generate the start and stop
characters.
Following start and stop characters are accepted by the printer:
Bar code Type
Start Character
Stop Character
Code 39
*
*
2 of 5 types
:
;
Codabar
a, b, c, d, A, B, C, D
t, n, *, e, A, B, C, D
Note:
Following combinations (start / stop) are specified for Codabar, but not
checked by the printer:
(a / t) (b / n) (c / *) (d / e) (A / A) (B / B) (C / C) (D / D)
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Error checking characters
Error checking characters are added by the printer only for bar code types
Code 128, Code 93 and Postnet. For all other bar code types the application
has to generate error checking characters and transmit them to the printer.
S
Unprinted areas
To ensure proper readability of a bar code unprinted areas in front and
behind the bar code are required. The printer does not insert these areas
itself; the amount of space has to be calculated by the application.