DATECS DPP-450 Programmer’s Manual
Commands ESC < and ESC > work together. The sequence, which selects the direction, is as follows:
• The print direction is set according to the currently selected code table.
• If command ESC > with argument > 0 was executed since last ESC u command, then this is
the print direction.
• If command ESC < was executed after this, the print direction is changed to the opposite.
39. Initializing the printer (ESC @)
Code: [1Bh] + [40h]
Clears data stored in the print buffer and brings various settings to the initial state (Default state).
Data (items) in serial buffer are not cleared.
40. Black mark mode sensor calibration (ESC CAL)
Code: [1Bh] + [43h] + [41h] + [4Ch] + n
Selects the ADC value, which the printer uses to distinguish the black marks on paper or labels. The
command is used in black mark mode only.
Possible values for n:
- 01h Returns one byte, which is the current ADC threshold value.
- 02h After receiving this command the printer moves approximately 20 cm of paper and searches
minimum and maximum of paper sensor values. Two bytes data are returned – minimum value and
maximum value.
- 03h After receiving this command the printer moves approximately 20 cm of paper and searches
minimum and maximum of paper sensor values. Then a reasonable value of the ADC threshold is calculated
and stored in flash memory. One byte data is returned, which is the new ADC threshold value.
- 0Ch Set / Get number of steps (1/8mm) between detection of black marker and printer stop. After
receiving this command, the printer expect one more byte:
- 01h Returns one byte, which is the current number of steps (1/8mm).
- 10h to FFh The byte is used as number of steps (1/8mm) between detection of black marker and printer
stop and is stored in flash memory. One byte data is returned, which is the new value.
The factory setting of steps is 75h.
- 0Ch Peeler sensor calibration. After receiving this command, the printer expect one more byte:
- 01h Returns one byte, which is the current ADC threshold value.
- 10h to FFh The byte is used as ADC threshold value and is stored in flash memory. One byte
data is returned, which is the new ADC threshold value.
The factory setting of ADC threshold value is B0h.
- 05h Set / Get number of steps (1/8mm) after label was got. After receiving this command, the printer
expect one more byte:
- 01h Returns one byte, which is the current number of steps (1/8mm).
- 10h to FFh The byte is used as number of steps (1/8mm)
(with offset 10h, i.e. if 1 step is wanted it must be send like (1 + 10h)).
One byte data is returned, which is the new value (real value, without 10h).
The factory setting of steps is 24h.
- 0Eh After receiving this command, the printer need one more byte, which is the new value of DAC of the
GAP sensor. If DAC value is 0, the printer uses Black Mark sensor. Return one byte, new value of DAC.
- 0Fh Return one byte, which is current value of DAC of the GAP sensor. 0 mean printer uses Black Mark
sensor.
- 10h to FFh The byte is used as ADC threshold value and is stored in flash memory. One byte data is
returned, which is the new ADC threshold value.
The factory setting of ADC threshold value is 68h.
Use this command carefully and only if the printer has problems in black mark / label recognition.
Note:
Use this command carefully and only if the printer has problems in black mark / label recognition.
(65 Seiten)
(4 Seiten)
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