POSIFLEX PD - 7301 Series, Руководство пользователя

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Part 8
USING THE CUSTOMER DISPLAY
DISPLAYING DATA
All data in 8-bit format received can be classified into 2 categories as
data to display or command codes for the customer display unit to respond. For
this series, unless under pass through mode or as part of the command code,
any byte between and including <20>h and <FF>h is regarded as
alphanumerical data to display according to ASCII table (the <XX>h means
the hexadecimal expression). The command codes except the clear pass
through flag command in Noritake mode always start with a byte between and
including <00>h and <1F>h. For PD-7321and PD-7311, the command codes
follow the same rule as PD-7301, however, only those between and including
<20>h and <7F>h are taken as alphanumerical data to display according to
ASCII table in 8 x 16 format. Any two bytes with the first byte between and
including <80>h and <FF>h are regarded as the expression for an oriental
language character. When these two bytes fall off the content of the valid
oriental language code table, an invalid character will be displayed.
COMMAND MODE SELECTION GUIDE
The below table provides some comparison for selection on command
mode to be used in the application program if it is not yet determined. The list
of commands available in each mode can be found in the appendix.
Mode Epson Noritake IEE
Cursor Invisible Under Bar Under Bar
Default mode Overwrite Overwrite Horizontal scroll
User defined font 3 chars 3 chars 2 chars (Chinese)
Code page select YES YES NO
Auto scroll message NO YES NO
DRIVER INSTALLATION
For application software to use RS232 interfaced PD-7321, there is no
direct need for any driver. The OPOS (OLE POS) driver or the JPOS (Java
POS) driver does not support the PD-7321 series.
SELF TEST
Self-test is a very useful feature and can be activated in both Epson
command emulation modes and IEE mode. The self-test starts by sending 1F-
40 (HEX) and terminates by sending 1B-40 (HEX).
In IEE mode, the test sequence is as follows
a.
Clear screen, Cursor home. The PD enters Vertical Scroll Mode.
b.
PD shows the power-on message, language type and version.
c.
The PD shows and enters “Horizontal Scroll” mode. Then displays