User manual
ScanVue5
®
Mini Kiosk
User Manual
M37574–01T
Industrial Electronic Engineers, Inc.
23-June-2008 Rev T Page 54
true so the server application can discriminate between VF and LCD unit requests and
not send graphics images to VF units. A VF unit receiving an image will display the
default no response message then will display a blank screen. The host server should
respond to a VF unit with a formatted text information block (TIB) of all 80 characters,
including the blanks, to locate the actual text in the required positions on the lines
(Figure 16)—there are no direct text formatting commands in the present version.
Vintners Merlot Wine
1/5 Gallon $11.49
ON SALE TODAY
$8.99
Figure 16—Item Description & Price Display
Text Slideshow
If you want to send multiple messages in sequence, this must be controlled from the
host server end. For instance, a text based series of messages for continuous
advertising could be sent to the display under control of the host. The host would have
to have the sequence of messages in a message file (or multiple small files) and send
them in a sequential loop with a delay for adequate viewing time. The loop control would
require an interrupt when the host receives data from the ScanVue420 barcode reader
to stop the message sequence, retrieve the item description and price, display it for a set
time and then return to the message loop.
Changing Language Character Sets
Appendix D shows the VF displays’ default ASCII font set with 64 empty character codes
between A0 and DF and the four extended language character sets that can fill these
empty positions. Initially, the default character set is US-ASCII+European. The ASCII
characters are always available but the extended character set can be changed from
UnitConfig by selecting the mode ExtCharacterSet and entering the appropriate value in
the New Content box. Only one extended language at a time can be loaded.
Extended Language Value
ASCII+European EUROPEAN (default)
ASCII+Katakana KATAKANA
ASCII+Cyrillic CYRILLIC
ASCII+Hebrew HEBREW