Printronix P9000 Series, User'S Reference Manual

Page: 82 / 334

Vertical Format Units 5-2
Line spacing may be mixed on the same form, but should be done with caution to avoid unpreĆ
dictable results.
VFU Deselected - If any VFU is deselected from the control panel, the VFU data is ignored
and the forms length definition returns to the previously set value. The current print position
becomes the top-of-form.
VFU Load/Save/Clear
One VFU table can be saved in Non-Volatile Memory (NVM) at a time. The VFU table forĆ
mat is: VFU type, LPI, and VFU channel data.
Load - Upon printer powerup or printer reset, a previously saved VFU will be loaded if the
saved VFU table matches the VFU type (see page 3-18). Upon loading the VFU, LPI will be set
to the value stored in the VFU table if the saved VFU was loaded using the 6 or 8 lpi DVFU or
NVFU Start Load code.
Save - From the control panel, VFU TABLE SAVE writes the current VFU table into
Non-Volatile memory. Skip-over perforation and forms length values are not saved from this
selection.
Clear - The VFU can be cleared by pressing ENTER at the VFU TABLE CLEAR configuraĆ
tion menu, control code (SFCC @), changing printer protocol, changing VFUs, loading paĆ
rameters, or by loading a new VFU format. When DISABLE is selected as the VFU type, the
previously loaded VFU data is not cleared and will still be in effect if reselected.
P-Series EVFU
The EVFU may be selected in P-Series protocol. The EVFU provides 16 channels to identify
up to 192 lines. The programming sequence is 1) start load code; 2) line identification code; and
3) end load code.
Start Load Code - 1E or 6E Hex
The start load code clears and initializes the EVFU memory for the memory load program. The
start load code is 1E hex when the PI line is disabled (low) or 6E hex when the PI line is enabled
(high).
Channel Assignment
The EVFU memory has the capacity for 192-line forms. The first line identification code
(channel code) in the memory load program defines the first line on the form; the second line
identification code defines the second line on the form, etc. Each line must have a line identifiĆ
cation code. Filler channel codes are used for lines that will not be accessed by the print proĆ
gram. Any channel code can be used as a filler except channel code 1, which is reserved for the
top-of-form, and channel code 12, which is reserved as the vertical tab channel. The same
filler channel code can be repeated as necessary for any number of lines.