Ithaca ITHERM 280, Руководство программиста

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Note 3: [ESC] y <6> and <7> enable and disable the inquire process.
These commands are not processed as they are received, but are
buffered then processed. The buffering process allows inquire commands
sent after a disable to be answered. In addition, inquires sent after an
enable may not be answered. (See additional notes 3 and 4 on the next
page).
Note 4: The printer has a resident OCR-MA font. It is defined and
mapped per ANSI X3.111-1986. Once mapped into a code page, it can
be removed by issuing an [ESC] y <12> command or a code-page select
command.
Note 5: In EPOS mode, the [ESC] y command is active.
[ESC] ~
Extended Configuration and Control
ASCII [ESC] ~ <n>
Hexadecimal 1BH 7EH <n>
Decimal <27> <126> <n>
IPCL none
EPOS [ESC] ~ <n>
Description The [ESC] ~ <n> commands are extended diagnostics commands. They
must all be preceded with an enabling command. These commands (in
general) are not intended to be used by the end user.