WX Series WeatherStation Technical Manual revision 1.000
Proprietary and Confidential
PRELIMINARY - DRAFT
51
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NMEA 0183 RECEIVED SENTENCE
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$PAMTC,
ATTOFF
Summary
A set of proprietary commands to set and query the angular attitude offsets for the
WX Series WeatherStation Sensor.
Syntax
One of the following forms:
$PAMTC,ATTOFF,SET,<3>,<4>,<5>*hh<CR><LF>
$PAMTC,ATTOFF,Q*hh<CR><LF>
Fields
<3>
Signed azimuth offset (yaw, or bow offset), degrees, to the
nearest tenth of a degree. The value must be between -180.0
and +180.0 degrees. Negative values indicate the forward mark
on the sensor housing is oriented toward the starboard side of
the vessel; positive values toward the port side.
<4>
Signed pitch offset, degrees, to the nearest tenth of a degree.
The value must be between -45.0 and +45.0 degrees. Positive
values indicate the sensor is tilted forward toward the bow;
negative values indicate the sensor is tilted aftward.
<5>
Signed roll offset, degrees, to the nearest tenth of a degree. The
value must be between -45.0 and +45.0 degrees. Positive
values indicate the sensor is tilted toward the port side; negative
values toward the starboard side.
Notes
Note that in the NMEA 0183 command, the arguments are in degrees. The values
stored in the WX Series WeatherStation Sensor are in radians. Therefore, when
using the $PAMTC,ATTOFF command, there may be a slight rounding error
causing the values read back from the WX Series WeatherStation Sensor to be
different than the commanded values by one least significant digit.
The $PAMTC,ATTOFF,SET,<3>,<4>,<5> command is used to program the WX
Series WeatherStation Sensor with the attitude offset angles when the sensor is
not oriented parallel to the centerline, and perpendicular to the deck of the vessel.
The programmed values are stored in nonvolatile EEPROM memory within the
WX Series WeatherStation Sensor, and so remain programmed even after cycling
