Star Micronics DP8340R - Manual (Page 22)

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CODE ESC M
(1B)
H
(4D)
H
FUNCTION Select 15 CPI
OUTLINE This code causes the printer to print at 15 CPI. The number
of columns per line is 44. When the power is turned on, the
15 CPI mode is selected.
CODE
GS
(1D)
H
FUNCTION Validation printing instruction
OUTLINE This code causes the printer to perform validation printing
of a maximum of 32 subsequent characters (at 15 CPI, from
the thirteenth to the forty-forth column).
After the GS code is received, a maximum of 32 characters
should be input, followed by the LF code which indicates
the end of the validation printing data.
(At this time, control codes except FS, ENQ, CAN and SUB
codes, or any character received beyond the limit of 32
characters are ignored.)
When the printer enters the validation mode, the ribbon is
shifted up and the ON-LINE lamp blinks. (This lamp goes
on and off at a 0.5-second interval until the end of the va-
lidation mode.) After the material to be validated is inserted,
and the LF button is pressed, the validate line is printed,
followed by a single line feed. When the check is removed
and the ON-LINE button is pressed, the printer returns to
regular mode and is set to ON-LINE status.
REMARKS
1) The print settings by commands (such as emphasized
mode and underline mode) are invalid only during val-
idation printing.
2) When the CAN code is received in the validation mode,
the printer returns to regular mode, and the mechanism
is initialized.
3) If the FS or SUB codes is received in the validation
mode, these codes are executed just after the printer
returns to regular mode.
4) In the validation mode, the LF button and the ON-LINE
button do not work except the above behavior.
5) If the printer has a Red black ribbon installed, the va-
lidate line will be printed in red.