Technical Reference Guide – Command descriptions > 120
DLL Data format is be sent in the following manner:
At loading time, if printer is in Super/Sub mode then only 
two bytes of data are required for each column.
L
OAD
 DLL 
CHARACTER
> Code: ESC = n1 n2 # a1 a2 a3 m ad1 ad2 id1 id2 d1 d2 
d3 d4 d5 [data]
> Compatibility: 
ML1190 eco: IBM
ML1120 eco: IBM III
> Function:
This sequence initiates character downloading.
> Range:
n1 = 0 – 255, Number of bytes in command string.
n2 = 0 – 255, N1 + n2 × 256
a1 = 0 – 255, Data starting address.
a2 = 0 – 255
a3 = 0 – 255
d0 + d1 + d2 = cell matrix width
36912 3m
b0~b7 valid as DLL Data
LSB
24611 3m-1
b0~b7 valid as DLL Data
LSB
MSB
13510 3m-2
b0~b7 valid as DLL Data
LSB
MSB
MSB
d0 d1 d2