Manual

STANDARD PRINTER COMMANDS
Query Firmware Revision
Function Causes the printer to send firmware revision
information to the host computer. The printer
sends its firmware part number, revision, revision
time, and revision date in response to this
command. Such information is useful when
developing software that must control several
different printers.
Explicit Form
!QR
Parameters None
Comments This command does not require a header line, but
must be followed by a line feed (or carriage return
and line feed). Do not use any other commands with
QUERY REVISION.
See also QUERY STATUS, VARIABLE USER_FEEDBACK
Example
!QR
IMPORTANT!
Use this command exactly as shown in the example.
Do not use other commands with the
QUERY
REVISION command.
Revision F, January 2012, CognitiveTPG 85