Operator Terminal System Manual - 11276916.pdf

Unit Functions
8 Unicode
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8.8 Unicode
Introduction Unicode is a global character coding standard that uses 16-bit values for displaying the
characters of almost any language. Earlier character coding standards (e. g. the
Microsoft Windows ANSI character set) use 8-bit values or combinations of 8-bit values
to represent the characters used in a certain language or region.
Microsoft Windows 2000 and Windows XP have input locales installed. This enables the
computer user to enter complex characters and symbols (e.g. Chinese characters)
using a normal keyboard. The character sets installed in the computer are used. You
can select input locales for various languages via the Control Panel. When installing new
character sets, all required characters will be added to the system.
Unicode in the
programming
software
The DOP11A-20 to DOP11A-50 operator terminals support Unicode if the latest system
program version (firmware) is installed. Unicode characters can be used in projects
and/or system texts.
The Microsoft Windows XP and Windows 2000 operating systems support Unicode.
The programming software uses a Unicode character set to display Unicode characters
in the dialogs on the computer. Only the Unicode characters used in the project are
downloaded when transferring a project.
Terminal font The operator terminal uses a terminal character set to display Unicode characters. The
character set in the terminal comprises approximately 35 000 characters but is not
complete according to Unicode standard. When transferring a project to the terminal,
only the characters used in the terminal will be downloaded. If a character is used that
is not available, a black rectangle will appear instead in the programming software and
in the operator terminal. The project test, which can be carried out when transferring a
project, checks whether all characters used are included in the terminal character set.
Font size for user texts and system texts
Unicode characters are processed as bitmaps (point matrix). The predefined font size is
8 x 16 pixels. This value can be changed. Certain complex characters (e. g. Chinese
characters) require a font size of 16 x 16 characters to ensure that all pixels are
displayed and misunderstandings avoided. When selecting a large font size on small
terminals, the screen may not be large enough to display the entire menu.
206 System Manual – DOP11A Operator Terminals