SATO GL4 Series Operator's Manual page 43

*Parallel Port Port Type
(This option only
appears if this is
Data Bit 8
the active port to
be used)
PI Ignored
Buffer Size in K 1 to 16
Auto Trickle
GL Series Operator's Manual
IEEE 1284/Disable/ IEEE 1284
Centronics
Enable/Disable Enable
Enable/Disable Enable
16
Disable/Enable Disable
Section 3: Configuration and Operation
The Enable option (factory default) means
the PI line is not passed directly from host
to printer; all 8 bits are used for data bits,
and characters in the hex 80-FF range can
be accessed. Disable means when the host
PI line is enabled, data bit 8 internally indi-
cates PI line status. To use the PI line, dis-
able data bit 8, and enable the Host PI
configuration option (under the PI Ignored
option).
Note: Data bit 8 is interpreted as either data
bit 8 or PI signal, but never both. When
enabled as data bit 8, data bit 8 has priority
over the PI signal, and all data above hex
7F is used to access character data and not
to interpret PI line data.
Conversely, when data bit 8 is disabled and
the PI signal is used, data bit 8 of the data is
reserved for use as the PI function, and you
cannot access characters in the hex 80-FF
range. Therefore, to access
characters in the hex 80-FF range, data bit 8
must be enabled.
The PI (Paper Instruction) signal is used to
control vertical paper motion. The Enable
option (factory default) ignores the PI signal
and treats the data as characters or control
codes. The Disable option causes the
printer to interpret the eight data lines as
VFU commands when the PI signal is true.
Configures the amount of memory allocated
for the Ethernet buffer. The range is 1-16
KB, in 1-KB increments.
This feature is used to prevent a host com-
puter from "timing out" because the parallel
interface is "busy" for too long. The Enable
(factory default) option means, when the
printer's buffers are almost full, the printer
begins to trickle data in from the host (at the
rate set in the Trickle Time menu) until the
buffers start to empty out.
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