Esc/Pos Tm Codes; Differences Between Epson Tm T90 And Itherm ® 280 - TransAct Ithaca 280 Programmer's Manual

Programming Codes
TM
ESC/POS Codes
The EPOS codes that are supported by the iTherm
TransAct Technologies, Inc. has no control over how Epson extends or changes these
control codes, and can make no guarantees as to the operation of our printer when it
replaces an Epson printer. The TM-T90 and EPOS emulation's are intended to make it
as easy as possible to replace an Epson printer with an iTherm
®
The iTherm 280 Printer provides two Epson emulations. The first emulation is as close
as possible to the TM-T90 Printer and tries to make the iTherm
replacement. However, when the iTherm
mode, it is subject to the same limitations as a TM-T90 Printer.
The second Epson emulation is EPOS mode. It extends and enhances the TM-T90
emulation to remove some of the restrictions and give access to some of the iTherm
280 Printer features not addressed by the TM-T90. It is intended that the standard
®
Ithaca PcOS emulation be used for new applications.
The following section lists all TM-T90 and EPOS commands that are processed. They
are as close as possible to Epson's definitions. The user must remember that the
®
iTherm 280 EPOS emulation, unlike the TM-T90 emulation, is not designed as a drop in
replacement for an Epson printer. The iTherm
unique features and functionality's to a point-of-sale receipt printer. These features are
not always compatible with Epson printers.
Note: The Epson emulation does not support Unicode, Double Byte or
downloaded True Type fonts.
Differences between Epson TM T90 and iTherm
In a few minor ways, the operation and programming iTherm
TM-T90. The following is a summary of key differences.
Page Mode
The page mode in the iTherm
TM-T90, however, the page size can be larger if the ESC/POS emulation is selected.
Undocumented Epson Commands
There are a number of undocumented commands in Epson printers. Where TransAct is
aware of these commands, they have been duplicated in the iTherm
Real-time Status
®
The iTherm 280 Printer is available in serial and parallel versions. Epson supports
parallel operation through a parallel to serial interface. Consequently, the response times
®
for the iTherm 280 Printer are generally faster. The iTherm
IEEE 1284 nibble-mode standard. If an application requires real-time status from the
printer, the IEEE 1284 bi-directional protocol must be used. The iTherm
does not support byte mode. If the iTherm
28-04430
®
®
280 Printer is in Epson TM-T90 emulation
®
280 Printer is designed to bring new and
®
280 operates in the same way as the TM-T88 and the
®
280 Printer is used in an IEEE 1284
Rev K
®
iTherm 280 Programmer's Guide
280 Printer are listed in this section.
®
280 Printer.
®
280 Printer a drop in
®
280 is not identical to a
®
280 Printer.
®
280 Printer implements the
®
280 Printer
®
®
280
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