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Honeywell TruePoint HMR3500 Manual page 5

Compass module
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HMR3500
Magnetic
Magnetic
Sensors
Sensors
UART COMMUNICATION INTERFACE
The 5-pin power supply and UART interface connector on the HMR3500, mates with a Harwin latching connector (Part #
M80-8980505) per the pin configuration table earlier in this document. The interface hardware protocol is RS-232 without
any further handshaking or hardware control lines.
Further HMR3500 interface commands and protocol are in the HMR3500 user's guide document.
TEST SOFTWARE DESCRIPTION
Computer test software is provided in the HMR3500 demonstration kit that will permit a thorough evaluation and
demonstration of the compass capabilities. CompassHost is a 32-bit Windows test program. It is capable of sending and
receiving all messages described in this manual except the BAUD message. It can display all messages received from the
module in the main window with scrolling text. It has a small window summarizing the current status of the module and a
graphic display of the current compass heading, roll, and pitch.
CompassHost can be run under Windows 9x, ME, NT 4.0, 2000 or their successors. One available serial port is required
for communicating with the compass. Processor, memory, and disk space requirements are minimal.
The CompassHost software is not described in this datasheet, but given in depth description in the HMR3500 user's guide
document.
www.honeywell.com
Temp
Temp
Sensor
Sensor
X
X
Y
Y
Z
Z
Power
Power
Supply
Supply
HMR3500 Block Diagram
16 – Bit
16 – Bit
Microcontroller
Microcontroller
Figure 3
T
T
RS-232
RS-232
I/O
I/O
R
R
X
X
Y
Y
Accels
Accels
Z
Z
5

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