NCR 7197 II SERIES, Руководство пользователя

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7197 Series II Owner’s Guide Chapter 6: Commands
August 2011 67
Chapter 6: Commands
Command Conventions
Introduction
The different features and functions provided by the printer are controlled by
sending commands from the host computer to the printer. This section describes the
commands that are supported by the printer. The printer commands are made up of
one or more bytes of data starting with a command control code followed by its
supporting parameters.
Commands control all operations and functions of the printer. This includes
selecting the size and placement of characters and graphics on the receipt or the slip
and feeding and cutting the paper. Unless otherwise noted, any of the commands
may be used in any combination to communicate with the printer from a program in
a host computer.
In order to allow the graceful handling of commands that may be available in other
printers but are not available in this printer, some commands will be listed and
described but identified as "not implemented." If the printer receives one of these
"not implemented" commands, the command and its supporting operands will be
discarded. Any other data bytes, including unrecognized commands, are sent to the
print buffer as data, and the printer will attempt to print the data when it is
instructed to print the buffer.
List of Commands and Location
This section presents groups of lists of the hexadecimal command codes,
parameters, and the command names. A page reference is provided for the page
on which the command is more fully described. If this document is being viewed
online, the page reference will be linked to the actual page and may clicked to go
to that page.
The first section lists all of the commands. The following lists are separated into
functional category groupings.
All commands listed in bold are new or have additional functionality when
compared to the NCR 7193.