DAVIS Vantage Pro Reference Manual page 22

Field
Forecast Rule number
Time of Sunrise
Time of Sunset
"\n" <LF> = 0x0A
"\r" <CR> = 0x0D
CRC
Total Length
Forecast Icons in LOOP packet
Field
Forecast Icons
Rain
Cloud
Partly Cloudy
Sun
Snow
Forecast Icon Values
Value Decimal Value Hex
8
6
2
3
18
19
7
22
23
Currently active alarms in the LOOP packet
This table shows which alarms correspond to each bit in the LOOP alarm fields. Not all bits in
each field are used. The Outside Alarms field has been split into 2 1-byte sections.
Field
Inside Alarms
Falling bar trend alarm
Rising bar trend alarm
Low inside temp alarm
High inside temp alarm
Offset Size Explanation
90 1
91 2 The time is stored as hour * 100 + min.
93 2 The time is stored as hour * 100 + min.
95 1
96 1
97 2
99
Byte Bit #
89
0
1
2
3
4
Segments Shown
0x08 Sun
0x06 Partial Sun + Cloud
0x02 Cloud
0x03 Cloud + Rain
0x12 Cloud + Snow
0x13 Cloud + Rain + Snow
0x07 Partial Sun + Cloud +
Rain
0x16 Partial Sun + Cloud +
Snow
0x17 Partial Sun + Cloud +
Rain + Snow
Byte Bit #
70
0
1
2
3
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Bit maps for forecast icons on the console screen.
Forecast
Mostly Clear
Partially Cloudy
Mostly Cloudy
Mostly Cloudy, Rain within 12 hours
Mostly Cloudy, Snow within 12 hours
Mostly Cloudy, Rain or Snow within 12 hours
Partially Cloudy, Rain within 12 hours
Partially Cloudy, Snow within 12 hours
Partially Cloudy, Rain or Snow within 12 hours
Currently active inside alarms.