CONTROLS & INSTRUMENTATION
Graphics, Text And Gauges
Display For Off-Highway Vehicles
be created and displayed include bitmaps, bar graphs, static text, dynamic text, graphic primitives and group objects. Bar graph objects and dynamic text objects can source real-time data from J1939 suspect parameter numbers. Group objects associate several objects so they can be displayed with a single J1939 message. Group objects are hierarchical and can include other group objects. This allows for display- ing multiple parameters simultane-
ously, Grayhill said.
Further, the MicroDisplay can be
used as a simple terminal to display
objects directly from the vehicle’s
ECU, such as fault or service messages. Using the four pushbuttons
on the device, the vehicle operator
can select the information to present
from up to 50 objects loaded in the
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The 3D Series MicroDisplay for monitoring
data on CANbus-connected off-highway
vehicles has been introduced by Grayhill
Inc. The display device was designed to
create screens with custom graphics,
text and gauges that automatically adjust
based on SAE J1939 values.
flash memory or objects sent from the
vehicle ECU. Additional I/O includes
an RS-485 port, two 200 mA outputs
and three discrete inputs.
Grayhill said the 3D Series
MicroDisplay features a 3. 2 in. trans-flective LCD — readable in sunlight.
The LCD produces high-contrast text
and graphics with four-level grayscale
and software-controlled RGB (any
color) backlighting.
The four-button keypad is integrated into the device with a solid
rubber mat forming the bezel. Key
legends, color and backlighting can
be customized. dp
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Grayhill Inc. has announced the release of its 3D Series MicroDisplay for monitoring data on CANbus-connected off-highway vehicles. The LaGrange, Ill.,
manufacturer said the display device
was designed to create screens with
custom graphics, text and gauges
that automatically adjust based on
SAE J1939 values.
Because the MicroDisplay is controlled via J1939 commands, native
coding is not required, Grayhill said.
Screens are created with an included software tool and commands are
received from the vehicle’s engine
control unit (ECU). The MicroDisplay
is applicable for displaying gauge
data, alert messages, diagnostics,
clocks/hourmeter, maintenance info,
machine setups and instructions.
All information shown on the
MicroDisplay are objects controlled
by the vehicle ECU. Custom graphics, screens and groups of objects
can be created using MicroDisplay’s
Windows PC-based tool. These
objects are either preloaded into the
MicroDisplay or can be updated from
the vehicle’s ECU. Objects that can
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