If a computer wishes to clear the buffer, the computer sends the Port Select Code followed by CLR and a terminating character (Enter/Return or Line Feed) to the Model 24SII DES.
This command will only affect print jobs originated by that particular 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.
NOTE: This command will not clear a printer's buffer of data already passed to it from the Model 24SII DES.
The clear buffer command is operable in both Port Select Mode A or Mode B. However, in Port Select Mode B, the Model 24SII DES is transparent after the first 16 characters are received, therefore the computer must wait for the Input Inactivity Timeout to occur before sending the clear buffer command.
The clear buffer command may be sent as a separate ASCII file preceding the print job, via DOS batch files, as part of a printer initialization string, or by using the utility software.
*%
Each print job must be a minimum of three (3) characters. The Input Inactivity Timeout interval is not valid until after three characters are received by the Model 24SII DES.
If less than three characters are received within the inactivity timeout interval (default is 20 seconds) after the first character(s) is received, the character(s) will be discarded.
