Esc> L Nl N2 Set Label Length; Esc> E Form Feed; Esc> G Short Form Feed; Esc> Q N Select Roll (Twin Turbo Printer Only) - Dymo LabelWriter 450 Duo Label Printer Technical Reference Manual

<esc> L nl n2
lB 4C ? ? nl, n2 = number of dot lines from sense hole to sense hole (binary), where:
default value = 3058 (10.2")
This command indicates the maximum distance the printer should travel while searching
for the top-of-form hole or mark. Print lines and lines fed both count towards this total so
that a value related to the length of the label to be printed can be used.
For normal labels with top-of-form marks, the actual distance fed is adjusted once the
top–of-form mark is detected. As a result this command is usually set to a value slightly
longer than the true label length to ensure that the top-of-form mark is reached before
feeding is terminated.
This command can also be used to put the printer into continuous feed mode. Any
negative value (0x8000 - 0xFFFF) will place the printer in continuous feed mode.
In continuous feed mode the printer will respond to Form Feed (<esc> E) and Short Form
Feed (<esc> G) commands by feeding a few lines out from the current print position. An
ESC E command causes the print position to feed to the tear bar and an ESC G causes it
to feed far enough so that a reverse feed will not cause lines to overlap.
<esc> E Form Feed
lB 45
This command advances the most recently printed label to a position where it can be torn
off. This positioning places the next label beyond the starting print position. Therefore, a
reverse-feed will be automatically invoked when printing on the next label. To optimize
print speed and eliminate this reverse feeding when printing multiple labels, use the Short
Form Feed command (see below) between labels, and the Form Feed command after the
last label.
<esc> G Short Form Feed
1B 47
This command feeds the next label into print position. The most recently printed label
will still be partially inside the printer and cannot be torn off. This command is meant to
be used only between labels on a multiple label print job.
<esc> q n Select Roll (Twin Turbo printer Only)
1B 71 ? n specifies the roll to print on, where:
30 (ASCII '0') = Automatic selection
31 (ASCII '1') = Left roll
32 (ASCII '2') = Right roll
LabelWriter 450 Series Technical Reference Manual
Set Label Length
nl = msb (binary)
n2 = lsb (binary)
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