Current Data Commands - DAVIS Vantage Pro Reference Manual

2. Current Data commands

"LOOP <number of LOOP packets to send-decimal>"
It sends the specified number of LOOP packets, 1 every 2 seconds. Console sleeps between
each packet sent. The station responds with an <ACK> then with binary data packet every 2
seconds.
To halt the sending of LOOP packets before receiving all of the requested packets, send a
<CR> by itself. Note that this is the same as the Wakeup sequence.
Each data packet is 99 bytes long and contains most of the current data values shown on the
vantage console. In addition, the state of alarms, the battery status of the console and the
transmitters, the weather forecast icon, and the sunrise and sunset times are included. Rev B
and Vantage Pro2 firmware also have the 3 hour barometer trend value. A CRC value is
calculated and transmitted so that the PC can validate the transmission accuracy of the data.
The data format is described in detail in section IX.1
Example (request 4 LOOP packets):
>"LOOP 4"<LF>
<<ACK>
<<99 byte loop packet> . . .
"HILOWS"
It sends all the current high/low data in a single data block. The station responds with an
<ACK> then a 436 byte data block that includes all the daily, monthly, and yearly high and
low values on the Vantage console, and then a 2 byte CRC value. This is so that the PC can
validate the transmission accuracy of the data. The data format is described in detail in
section IX.2 .
Example:
>"HILOWS"<LF>
<<ACK>
<<436 byte hi/low packet><2-Byte CRC>
"PUTRAIN <Yearly Rain in rain clicks-decimal>"
It sets the Yearly rainfall amount on the console.
Example (set the Yearly rain to 24.83 inches):
>"PUTRAIN 2483"<LF>
<<ACK>
The console shows yearly rain of 24.83 inches (assuming that the rain collector is configured
for a 0.01" collector).
"PUTET <Yearly ET in 100th inch-decimal"
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