Revision D 12/09Chapter 4: Programming Commands 99
Select pitch of HRI characters
ASCII | GS f n | |
Hexadecimal | 1D 66 n | |
Decimal | 29 102 n | |
Value of n: | 0 | = Standard Pitch at 15 CPI |
| 1 | = Compressed Pitch at 20 CPI |
Default: | 0 | (Standard Pitch at 15 CPI) |
Selects standard and compressed font for printing bar code characters.
Select bar code height
ASCII | GS h n |
Hexadecimal | 1D 68 n |
Decimal | 29 104 n |
Value of n: | Number of dots |
Range of n: | |
Default: | 216 |
Sets the bar code height to (n/154 inch).
Print bar code
| First Variation |
ASCII | GS k m d1…dk NUL |
Hexadecimal | 1D 6B m d1…dk 00 |
Decimal | 29 107 m d1 dk 0 |
Second Variation
GS k m n d1…dn 1D 6B m n d1…dn 29 107 m n d1…dn
(0 = End of command)
Selects the bar code type and prints a bar code for the ASCII characters entered. If the width of the bar code exceeds one line, the bar code is not printed.
There are two variations to this command. The first variation uses a NUL character to terminate the string; the second uses a length byte at the beginning of the string to compensate for the code 128 bar code, which can accept a NUL character as part of the data. With the second variation, the length of byte is specified at the beginning of the string.
Bar codes can be aligned left, center, or right using the align positions command (1B 61).
The check digit is calculated for UPC and JAN (EAN) codes if it is not sent from the host computer.
Rotated barcodes set with small modules (select bar code width command 1D 77 n , with n=1 or 2) and PDF 417 barcodes in any orientation are printed at low speed, for better readability.
Exceptions
The command is only valid at the beginning of a line.
Illegal data cancels the command.
