DATECS DPP-450 Programmer’s Manual
If ruled line is off, then the paper is moved one line (0.125 mm) without printing.
If there are graphic or text data in the line, they are ignored (erased).
The same effect will have command ESC 3 [01h] without text or graphic data in the line.
Warning!
Because of the characteristics of thermal printing it is possible, that the quality of single horizontal lines on
the paper is not.
18. Ruled line n dot line print (DC3 p)
Code: [13h] + [70h] + nL + nH
The selected ruled line buffer is repeated on nL+256*nH lines.
If ruled line is off, then the paper is moved nL+256*nH dots without printing.
If there are graphic or text data in the line, they are ignored (erased).
The same effect will have command ESC 3 n without text or graphic data in the line (the difference
is, that the possible line height is up to 255 dots).
Warning!
Because of the characteristics of thermal printing it is possible, that the quality of single horizontal lines on
the paper is not good.
19. Ruled line image write (DC3 v)
Code: [13h] + [76h] + nL + nH + D1 + …
The command fills the selected ruled line buffer with nL+256*nH data bytes.
Possible values of data bytes: 0-FFh. Every byte defines 8 dots, last executed DC2 = determines
whether MSB is left or right side.
Selected ruled line buffer is erased and new data are written.
Dots outside the printable area are ignored.
20. Canceling print data in page mode (CAN)
Code: [18h]
The command clears the currently selected page area and sets current print position to coordinates
(0, 0) in the current page (depending on the currently selected print direction with command GS T).
The command is not valid in standard mode.
21. Printing data in page mode (ESC FF)
Code: [1Bh] + [0Ch]
The command executes a batch printout of the data, mapped in the currently selected page. The
printer continues to work in page mode and data is not destroyed, so the command may be
executed many times.
The command is not valid in standard mode.
22. Sounds the buzzer (ESC RS)
Code: [1Bh] + [1Eh]
By executing this command the buzzer will beep.
23. Setting character spacing (ESC SP)
Code: [1Вh] + [20h] + n
[0 <= n < 40h]
The rightward space amount is set in dot unit (1/203 inch unit). The initial value is n=0. When the
font size is doubled the space between characters is also doubled. Possible values are from 0 to 63
dots.
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