Command Summary
7
3
Software
The multiple communication protocols available and simple command structure of the GLK240128-
25/GLT240128 means that a variety of applications can be used to communicate with the display. Text
is sent to the display as a character string, for example, sending the decimal value 41 will result in an 'A'
appearing on the screen. A single control character is also available. Commands are merely values
prefixed with a special command byte, 254 in decimal.
Table 2: Reserved Control Characters
Control Characters
7
Bell / Sound Buzzer
10
Line feed / New line
Once the correct communication port is identified, the following communication settings can be applied
to communicate correctly with the GLK240128-25/GLT240128.
Table 3: Communication Settings
BPS
Data Bits Parity Stop Bits Flow Control
19200
8
None
1
None
Finally, with a communication port identified and correctly setup simple text strings or even command
bytes can easily be transmitted to control your display.
3.1
MOGD#
The Matrix Orbital Graphic Display interface, MOGD#, is offered as a free download from
www.matrixorbital.ca/software/software_graphic
. It provides a simple graphical interface that allows
settings, fonts, and bitmaps to be easily customised for any application.
While monochromatic bitmaps can easily be created in virtually any image editing program, MOGD#
provides an extensive font generation suite to stylize your display to any project design. In addition to
standard font wide modifications, character ranges can be specified by start and end values to eliminate
unused symbols, and individual glyphs can be modified with a double click. Finally, text spacing can be
tailored and a complete font library built with your Matrix Orbital graphic display.
Like uProject, MOGD# offers a scripting capability that provides the ability to stack, run, and save a
series of commands. The most basic function is the Send Numeric tool which is used to transmit a string
of values to the display to write text or execute a command.
