Oki MICROLINE ML521 Reference Manual page 113

The distance represented by the tab (distance from the center of one dot to the center of the
next dot) depends on the character pitch in effect when the printer receives the HT command,
as follows:
The tab information must be entered as four-digit ASCII numbers separated by commas, and
must be in ascending order. For tab values less than 1000, enter a zero for the x, y and/or z
digits as appropriate.
For example, suppose you want to set tabs by dot columns at 1/2", 2", 4", and 6" from the left
margin, using 12 cpi pitch. From the table above, at 12 cpi pitch, each dot produces a shift of
1/144". So, to move over 1/2" from the home position (0001, or 1/144"), the value would be
0071 ([1/2 x 144 dpi] - 1); for 2", the value would be 0287; for 4", 0575; and for 6", 0863. To
set these tabs enter the BASIC statement
LPRINT CHR$(27);CHR$(3);"0071,0287,0575,0863";CHR$(13)
Here are the maximum values for x
XYZW Values for Setting Horizontal Tabs
Note: Using the maximum value for the x
between the tab stop and the right margin for a full character to print.
Table 52: MML ESC ETX Command —
Shift Increment for Character Pitches
Pitch
10 cpi
12 cpi
15 cpi*
17.1 cpi
20 cpi
Proportional
* 15 cpi applies only to ML520 and ML521.
y z w for each pitch and printer model:
n n n n
Table 53: ML ESC ETX Command —
Maximum xyzw
Pitch ML320
10 cpi 0959
12 cpi 1151
15 cpi* N/A
17.1 cpi 1643
20 cpi 1917
* 15 cpi applies only to ML520 and ML521.
y
n
Chapter 8: Horizontal Control Commands
Increment of Shift
1/120"
1/144"
1/180"
1/206"
1/240"
1/120"
Maximum xyzw
ML520 ML321 ML521
0960 1631 1632
1152 1956 1956
1440 N/A 2448
1644 2795 2796
1920 3261 3264
z w tab setting may not leave enough room
n n n
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