54
MULTIPORT SPOOLER VIII (4-, 8-, and 12-Port Models)
5.3.8.C Sending Strings to Peripherals
Suppose that your application does not allow you to directly set the printer
to a specific mode. By using the String option, you can send a specific escape
sequence to the printer to set it to the mode you need. You can also restore
the normal mode by using an escape sequence after the print job.
If you need to configure a laser printer for manual paper-feed mode, you
must send the printer (as a Before string) the escape sequence required to set
it to that mode. Then, to avoid any conflict with other users, set the printer
back to automatic-feed mode by defining a matching After string. The Before
and After strings would look like this:
Before String
(1B)&l2H
Manual feed
After String
(1B)&l1H
Automatic feed
(1B)
represents the ESC (escape) character.
5.3.9 T
IMEOUT
S
CREEN
(MPSDOS O
NLY
)
At the timeout screen, you can set an end-of-job timeout for the Multiport
Spooler VIII. The default timeout is 6 seconds, but the timeout can be set
from 1 to 999 seconds. (Entering a value of zero sets the timeout to
1
⁄
4
second [250 milliseconds].) If the timeout is set to 6 seconds, MPSDOS
assumes that a job has been completed if no data is transmitted for a period
of 6 seconds. Any transmission received after the timeout expires is
interpreted as a new job.
Some software programs (for example, AutoCAD) perform a variety of
calculations while printing or plotting. Temporary pauses during transmission
may occur during these calculations. If the MPSDOS timeout expires during
such a pause, MPSDOS assumes that the job has been completed, and it will
consider further data to be a new job. In general, you should set the timeout
long
enough to ensure that a job will not be ended prematurely, but
short
enough not to delay future jobs. For software that transmits without
interruption (for example, word-processing packages), use a timeout of
6 seconds (or longer, if your file has graphics). If you expect transmission
delays, use a timeout of 20 to 30 seconds.
Содержание PI750A
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