DAVIS Vantage Pro Reference Manual page 44

Field
LOW_TEMP_OUT_ALARM
HIGH_TEMP_OUT_ALARM 9
LOW_TEMP_ALARM
HIGH_TEMP_ALARM
LOW_HUM_IN_ALARM
HIGH_HUM_IN_ALARM
LOW_HUM_ALARM
HIGH_HUM_ALARM
LOW_DEW_ALARM
HIGH_DEW_ALARM
CHILL_ALARM
HEAT_ALARM
THSW_ALARM
SPEED_ALARM
SPEED_10MIN_ALARM
Offset Size Explanation
8 1 The temperature alarm is in 1 unsigned byte in 1 °F resolution.
It has an offset of +90°F so every number is positive. For
example -32°F would be stored as 58°F (-32 + 90). If the
alarm is not set, a 255 is stored.
1 The temperature alarm is in 1 unsigned byte in 1 °F resolution.
It has an offset of +90°F so every number is positive. For
example -32°F would be stored as 58°F (-32 + 90). If the
alarm is not set, a 255 is stored.
10 15 The temperature alarm is in 1 unsigned byte in 1 °F resolution.
It has an offset of +90°F so every number is positive. For
example -32°F would be stored as 58°F (-32 + 90). If the
alarm is not set, a 255 is stored. There are 15 bytes for the
temperature alarm. Bytes 0 to 6 are for the extra temperature
stations, bytes 7 to 10 are for the soil station temperature, and
bytes 11 to 14 are for the leaf station temperature.
25 15 The temperature alarm is in 1 unsigned byte in 1 °F resolution.
It has an offset of +90°F so every number is positive. For
example -32°F would be stored as 58°F (-32 + 90). If the
alarm is not set, a 255 is stored. Bytes 0 to 6 are for the extra
temperature stations, bytes 7 to 10 are for the soil station
temperature, and bytes 11 to 14 are for the leaf station
temperature.
40 1 The humidity alarm is stored in 1 unsigned byte in 1%
resolution. A value of 255 indicates the alarm is not set.
41 1 The humidity alarm is stored in 1 unsigned byte in 1%
resolution. A value of 255 indicates the alarm is not set.
42 8 The humidity alarm is stored in 1 unsigned byte in 1%
resolution. A value of 255 indicates the alarm is not set. Note
that the first byte is for the ISS outside humidity.
50 8 The humidity alarm is stored in 1 unsigned byte in 1%
resolution. A value of 255 indicates the alarm is not set. .
Note that the first byte is for the ISS outside humidity.
58 1 The dew alarm is in 1 unsigned byte in 1 °F resolution. It has
an offset of +90°F so every number is positive. For example -
32 °F would be stored as 58 °F. If the alarm is not set, a 255 is
stored.
59 1 The dew alarm is in 1 unsigned byte in 1 °F resolution. It has
an offset of +90°F so every number is positive. For example -
32 °F would be stored as 58 °F. If the alarm is not set, a 255 is
stored.
60 1 The chill alarm is in 1 unsigned byte in 1 °F resolution. It has
an offset of +90°F so every number is positive. For example -
32 °F would be stored as 58 °F. If the alarm is not set, a 255 is
stored.
61 1 The heat alarm is in 1 unsigned byte in 1 °F resolution. It has
an offset of +90°F so every number is positive. For example
62 1 The temperature alarm is in 1 unsigned byte in 1°F resolution.
It has an offset of +90°F so every number is positive. For
example, -32°F would be stored as -32 plus 90, which is 58°F.
63 1 Wind speed alarm is stored in 1 unsigned byte in 1 mph
resolution. A value of 255 indicates the alarm is not set.
64 1 10 minute average Wind Speed alarm is stored in 1 unsigned
byte in 1 mph resolution. A value of 255 indicates the alarm is
not set.
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