Owner`s manual

NOTE: In Port Select Mode A, when the input inactivity timeout is set

to 0 (zero) seconds, you must use method 2, 3, or 4 on the previous

page to end a print job.

In Port Select Mode B, a print job is ended only when no characters

are received by the Model 24 from the computer for the specified input

inactivity timeout period.

CAUTION: The input inactivity timeout should not be set to 0 (zero)

seconds in Port Select Mode B.

If the buffer of the Model 24 is filled to capacity, the unit will drop the

DTR line or send an XOFF to the computer, causing the computer to

stop sending characters until the buffer can accept more data. In this

case, the time that the computer is not sending characters is not

counted as part of the input inactivity timeout.

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If you wish to clear the buffer of all of your print jobs, you must send the

clear buffer sequence

which consists of the Port Select Code followed

by CLR and a terminating character:

Enter/Return

Line Feed

. This

command will only affect print jobs originated by your computer. Print

jobs in the buffer from other computers are not affected. The clear

buffer command will clear print jobs currently queued in the buffer and

also a print job in process, if one is printing. This command will not

clear a printer's buffer of data already passed to the printer from the

Model 24.

The clear buffer sequence is operable in either Port Select Mode A or

Mode B. In Port Select Mode B, however, since the Model 24 is

transparent , the computer must wait for the input inactivity timeout to

occur before sending the clear buffer sequence. The clear buffer

sequence may be sent by creating a clear buffer file or program (see

Section 6.2.8