Lexmark T620 Technical Reference - Page 270

4-103 PostScript Your printer responds and processes a Ctrl-T (x'14') command as normal data and not a status query when: • Another interpreter is processing a print job. • The printer is idle and another interpreter is the selected interpreter. Notes: • Status queries cannot be received while the printer is in an error state. • Your printer always selects the PostScript emulation interpreter and pro- cesses a Ctrl-T (x'14') command as a status query when data is received through the LocalTalk interface. Tagged Binary Active When Tagged Binary is active, your printer always responds to a Ctrl-T (x'14') command as a status query and selects the PostScript emulation interpreter to process the current print job. Tagged Binary mode is immediately exited at the end of the print job. Note: Status queries cannot be received while the printer is in an error state. Status Messages Your printer responds to a Ctrl-T (x'14') status query on an interface by sending a one-line status message back to the host computer over the same interface. If the status query is received between print jobs and the printer is idle with no error conditions, an idle response is returned to the host computer. Status messages are bracketed by the characters %%[ and ]%%, so the computer software can extract them from other data generated by the current print job. They follow a standard syntax, consisting of one or more key-value pairs, separated by semicolons. For example: %%[ job: Project Report; status: busy; source: Parallel ]%% The following table lists the possible keys and value descriptions.