Specifications

207
ZPL Commands
^JT
9/15/06 ZPL II Programming Guide 45541L-004 Rev. A
^JT
Head Test Interval
Description The ^JT command allows you to change the printhead test interval from every
100 labels to any desired interval. With the
^JT command, the printer is allowed to run the
test after printing a label. When a parameter is defined, the printer runs the test after printing a
set amount of labels.
The printer’s default head test state is off. Parameters for running the printhead test are defined
by the user.
Format ^JT####,a,b,c
This table identifies the parameters for this format:
Comments The
^JT command supports testing a range of print elements. The printer
automatically selects the test range by tracking which elements have been used since the
previous test.
^JT also turns on Automatic Mode to specify the first and last elements for the head test. This
makes it possible to select any specific area of the label or the entire print width.
If the last element selected is greater than the print width selected, the test stops at the selected
print width.
Whenever the head test command is received, a head test is performed on the next label unless
the count is set to 0 (zero).
Parameters Details
#### = four-digit
number of labels
printed between
head tests
Accepted Values:
0000 to 9999
If a value greater than
9999 is entered, it is ignored.
Default Value:
0000 (off)
a = manually select
range of
elements to test
Accepted Values:
N = no
Y = yes
Initial Value at Power-up:
N
b
= first element to
check when
parameter
a is
Y
Accepted Values:
0 to 9999
Initial Value at Power-up: 0
c
= last element to
check when
parameter
a is Y
Accepted Values:
0 to 9999
Initial Value at Power-up: 9999