Datamax-O'Neil Class Series II Programmer’s Manual - Manual (Page 145)

Label Formatting Command Functions
Class Series 2 Programmer’s Manual 131
H Enter Heat Setting
This command changes the “on time” of elements of the print head. The default setting
is 10 (except in the case of printers with a menu, where the default setting can be
changed through the keypad). An increase or decrease in this value results in a change
of heat applied by the print head to the media, lightening or darkening the print contrast
accordingly. This is helpful when using different media types, each requiring a different
amount of heat to properly image the media. The host device can send this command
value to correct the heat setting per the application.
Syntax: Hnn
Where: nn - Is a two-digit heat value (00-30).
Sample: L
H15
141100001000100SAMPLE LABEL
E
The sample above sets the printer for a heat value of 15 and
prints one label.

Non-Display models – the “Darkness Potentiometer,” while providing subtle changes, is
intended to be used to match print contrast levels following print head replacements.
J Justification
This command changes the printing justification.
Syntax: Ja
Where:
a
- Is a single-digit alpha character:
L = left justified (default)
R = right justified
C = center justified
Sample:
L
1911A1801001000TEST1
JR
1911A1801000100TEST2
JC
1911A1802000200TEST3
E
The sample above prints “TEST1” one inch up and one inch over
going right, “TEST2” one inch up and one inch over going left, and
“TEST3” two inches up and over.

Display-Equipped Models – This command is only valid for use with scalable fonts.