4.The computer sends the Printer Select Code followed by a printer port number. If the port number is the same number as that of the current print job, this will indicate the end of the current print job, and the next print job will be routed to the same printer. If the port number is a different number from that of the current print job, this will indicate the end of the current print job, and the next print job will be routed to the newly selected printer.
NOTE: In Printer Select Mode 2, when the input inactivity timeout is set to 0 seconds, a print job is ended only when the computer sends the Printer Select Code followed by a printer port number or the clear buffer command.
In Printer Select Mode 1, a print job is ended when no characters are received by Print Master from the computer for the specified input inactivity timeout period.
CAUTION: The input inactivity timeout should not be set to 0 (zero) seconds in Printer Select Mode 1.
If Print Master's buffer fills, Print Master will drop the CTS 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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