User`s guide

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) and an END statement. Do not use

any other commands with QUERY REVISION.

See also QUERY STATUS, VARIABLE USER_FEEDBACK

Example

!QR

END

IMPORTANT!

Use this command exactly as shown in the example.

Do not use other commands (except the

END

command) with the

QUERY REVISION command.