User`s guide

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Port Scheme Four different communications port schemes are selectable from
the control panel if an optional interface board is installed. All
enabled ports can simultaneously receive incoming data until the
communications buffer for that port is full. The execution of a
print job is determined by which port polling scheme is selected.
The four communications port schemes are:
Sequential - assigns no priority to any port and executes
the first print job received from any enabled port, then
advances to the next enabled port in the sequence. The
sequential polling is: Parallel, Serial, AppleTalk, Network,
then back to Parallel.
Priority - allows you to assign a high priority to one enabled
port (Parallel, AppleTalk, Network, or Serial). All other
ports have the same lower priority. If new jobs are received
from the priority port before the jobs on the other ports have
begun executing, the high priority port gets its jobs printed
first.
Sequential Lock - identical to Sequential polling except that
the active port retains priority (continues to process print
jobs) until no more data is available.
Priority Lock - identical to Priority polling except that the
active port retains priority (continues to process print jobs)
until no more data is available on the active port.
Priority Port This menu item appears if Port Scheme indicates priority or
priority lock. It gives priority to the selected installed option
or the parallel port.
Format PFM
(Programmable Font
Module)
This menu item allows you to format the Programmable Font
Module from the control panel. This item only appears if a
Programmable Font Module is installed and is detected as
being unformatted.
2-32 Using the Control Panel