IntelliTech Intellibar M48 Reference Manual page 24

Continuous Media
For continuous media, setting the Variable Form Length command causes a soft engine
reset to be executed with the label pitch length set to the form length +2 mm gap.
Therefore, the logical paper length (bitmap size) and the paper movement are always
synchronized.
If Variable Form Length is not set, or the form length is set to 0, or a reset (ESC E) is
received, the logical paper length and paper movement are set from the control panel using
the "Operator Panel" parameter under "Label Menu."
Die Cut Media
For die-cut media, the Variable Form Length command changes the logical paper length
(bitmap size) to the specified length. However, the pitch length in the printer remains as
"Measured" (read by the "Fixed" control panel setting) or it can be set using the "Operator
Panel" parameter under "Label Menu." If the specified form length is less than the printer's
value, white space shows in each label. If the specified form length is greater than the
printer's value, the page will be formatted internally as specified, but all printing outside
the engine printable area will be clipped. This is consistent with the PCL command
language and allows relative movements from the bottom of the edge of the logical page to
position correctly.
Within "Label Menu" exists a "Label Measurement" selection that contains three choices:
"Automatic", "Fixed", and "Operator Panel". These selections determine how the printer
synchronizes form length and label length.
IntelliBar M Series Extensions to HP PCL Commands
NOTE: Under "Label Menu", there exists a
"Label Measurement" selection that contains
three choices: "Automatic", "Fixed," or
"Operator Panel." This selection determines how
the printer synchronizes form length and label
length. For example, when set to "Automatic,"
the printer advances a certain number of die-cut
labels during power-up in order to calculate label
and label gap lengths. When set to "Fixed," the
value calculated from the last "Automatic"
measurement is stored and used at power-up.
This prevents feeding of blank labels. When set
to "Operator Panel," you must manually enter
the label length and label gap length into
NVRAM for use during power-up calculations.
"Operator Panel" is primarily used for
continuous label, ticket, or tag media.
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