EFP9800 ESC/POS Commands
6– 32 3255 4073– 002
The following table describes the format of the character data as expressed by
h, u, and l.
Value Range (in decimal) Description
h 0-10 (7 x 7)
0-6 (5 x 9)
Number of u, l pairs (columns)
u
i
u
i
= 0-255 Data for column i pins. u = the upper 8 pins. Bit 7 of u
i
corresponds to
pin 1, bit 6 of u
i
corresponds to pin 7, and so on. Bit 0 of u
i
corresponds
to pin 8. The illustration on the following page shows graphically the
character data format.
l
i
l
i
= 0-255 Data for column i pin 9. l = the lowest pin. Bit 7 of l
i
corresponds to pin
9. The illustration on the following page shows graphically the character
data format.
Notes:
• Each u
i
l
i
defines data for a 9-pin column of data.
• Each 1 bit specifies that a pin is printed in the column.
• Each 0 bit specifies that a pin is not printed in the column. Each 0 bit
specifies that a pin is not printed in the column.
Both 7 x 7 and 5 x 9 character sets are downloaded using the same format. They
differ in the range of h and in their use of the downloaded data.
7 x 7 (40/42/51) character print zone (compressed)
• Range of h: 0-10.
• Half dot character. Width is 10 columns.
• Data in the upper bytes (u
i
) only are stored. Data in the lower byte (l
i
) is
treated as 0.
• If h < 10, the remaining columns are taken to be 0.
5 x 9 (33/35/42) character print zone (uncompressed)
• Range of h: 0-6.
• Full dot character: the printer prints a column of 0’s after each data column
(defined by u
i
l
i
)
• Data in the upper and lower bytes are stored and printed.
• If h < 6, the remaining columns are taken to be 0.
