Section 7 - Serial Data Interface
Page 27
Raw Inclination Download Message
Although the RD 1000 displays raw inclination measurements as Percent Slope
, locked values are downloaded as angles and only have the following
format:
$PLTIT,HV,
horiz dist,units,az,units,inc,units,sd,units
*checksum<CR><LF>
$PLTIT
Criterion 400 message identifier.
HV
Horizontal Vector message type.
horiz dist
Horizontal distance.
Always a null value.
units
Horizontal distance units.
Always a null value.
az
Azimuth.
Always a null value.
units
Azimuth units.
Always a null value.
inc
Inclination.
units
Inclination units.
D = degrees
sd
Slope distance.
Always a null value.
units
Slope distance units.
Always a null value.
*checksum
Asterisk followed by a hexadecimal
checksum. Calculated by XORing all the
characters between the ‘$’ and the ‘*’.
<CR><LF>
Carriage return / line feed combination.
Example
$PLTIT,HV,,,,,20.31,D,,*0D
Percent Slope = (Tan 20.31
°
) x 100 = 37%