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Control Codes PcOS Series 150 Programmer's Guide
Miscellaneous Control
Page 56 Rev G 12/14/99
Function Query marker
ASCII [ESC] q <n>
Hexadecimal 1BH 71H <n>
Decimal <27> <113>
IPCL none
EPOS none
Function Return status to host
Serial/IEEE1284 Parallel, non-IEEE 1284
Response [SOH] <n>… Not supported via PE
Description This command can be placed in the print data and, when processed by the
printer, will return a progress status marker. The value of <n> can be any
8-bit value. It is returned to the host unaltered. The intent is for it to be a
sequence number. This command can be used to track the print progress of
the printer or verify that the data has been printed.
Note: This command is a line terminator that causes the printer to print all
previous data. If a normal line terminator (like a [CR]) is not supplied,
right justify and autocenter will not function correctly. All data will be left
justified. [ESC] q does not perform a [CR] or [LF] function.