POSIFLEX Business Machines LCD Customer Display PD-7100 - Manual (Page 11)

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Please reserve the COM port terminator in a safe place in case the non-pass-
through operation would be required in the future.
D. After Powering Up
A firmware version as power on sign will appear on the screen for a while
and the emulation mode will appear for a while after the firmware version
display. Then a under-line cursor will appear at the left-most digit of the top row
for Noritake and IEE emulation mode and no cursor will appear for other
emulation modes. The installation is now completed.
IV. OPERATION
A. 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-7110/7120/7210/7220, the command codes follow the same rule as PD-
7100/7200, 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.
B. Command Codes
For software command codes application. Please visit our web site
http://www.posiflex.com.tw for details on software commands if required.