Vantage Pro2 Weather Observation is driver to communicate Vantage Pro2(weather research craft) of Davis Instruments Corp. in America.
<Figure 1> is read setting example of Vantage Pro2 Weather Observation communication driver.
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| <Figure 1> Read setting example of Vantage Pro2 Weather Observation driver |
Device Setting of <Figure 1> are input, Com Port(COM1), Com Speed(19200), Parity Bit(2), Data Bit(8), Stop Bit(1).
Also, set time for suspension of communication after LF command(0 ~ 1000mSec, Default = 50) by using option part.
Vantage Pro2 Weather Observation read schedule
Read schedule setting parameters are as follows :
1) STATION : Don't care. Fixed to 0.
2) Device Type : Support just one Loop. ( Refer to <Table 1> )
3) Read Start Address : Don't care.
4) Save Start Address for Communication Server : Saving start address for Communication Server.
5) Read Size : Data size to read. (Always fixed to 1)
Read schedule example)
READ, 0, LOOP, 0, 0, 1,
<Table 1> is save address of LOOP command and contents to be used at Vantage Pro2 Weather Observation communication driver.
Device Type |
Save address | Save contents |
Unit or range |
LOOP |
Save addr + 0 | Signed value of 3 hour air pressure value Trend (Display as 'P' value, in case of Rev A) |
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| Save addr + 1 | Packet type(display as 0) |
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| Save addr + 2 | Next Record number |
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| Save addr + 3 | Air pressure value |
inchs Hg | |
| Save addr + 4 | Air pressure value |
hPa, it is same data with above air pressure value | |
| Save addr + 5 | Inner temp |
¢µ(Fahrenheit) | |
| Save addr + 6 | Inner temp |
¡É(Celsius), it is same data with above inner temp | |
| Save addr + 7 | Inner humidity |
% | |
| Save addr + 8 | External temp |
¢µ(Fahrenheit) | |
| Save addr + 9 | External temp |
¡É(Celsius), it is same data with above external temp | |
| Save addr + 10 | Wind speed |
mph | |
| Save addr + 11 | Wind speed for average of 10 minute |
mph | |
| Save addr + 12 | Wind direction |
1 ~ 360, 90 = East, 180 = South, 270 = West, 360 = North | |
| Save addr + 13 ~ 19 | 7 additional temperature value |
¢µ(Fahrenheit) | |
| Save addr + 20 ~ 23 | 4 Soil temperature value |
¢µ(Fahrenheit) | |
| Save addr + 24 ~ 27 | 4 Leaf temperature value |
¢µ(Fahrenheit) | |
| Save addr + 28 | External humidity |
% | |
| Save addr + 29 ~ 35 | 7 additional humidity value |
% | |
| Save addr + 36 | Rain Rate |
inchs/hour | |
| Save addr + 37 | Rain Rate |
mm/hour, it is same data with above Rain Rate | |
| Save addr + 38 | UV value |
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| Save addr + 39 | Solar Radiation |
watt/meter | |
| Save addr + 40 | Storm Rain |
inchs x 100 | |
| Save addr + 41 ~ 43 | Start year, month, day of current storm |
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| Save addr + 44 ~ 46 | Day/Mont/Year rainfall |
inchs/hour x 100 | |
| Save addr + 47 | Day ET |
inchs x 1000 | |
| Save addr + 48 | Month ET |
inchs x 100 | |
| Save addr + 49 | Year ET |
inchs x 100 | |
| Save addr + 50 ~ 53 | 4 Soil Moisures |
centibar | |
| Save addr + 54 ~ 57 | 4 Leaf Wetnesses |
0 ~ 15, 0 = very dry, 15 = very wet | |
| Save addr + 58 | Low Byte = Inside Alarm, High Byte = Rain Alarm |
Status value by bit (Refer to Vantage Pro2 data) |
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| Save addr + 59 | Outside Alarm(16 bit) |
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| Save addr + 60 ~ 63 | Extra Temperature/Humidity Alarm |
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| Save addr + 64 ~ 65 | Soil & Leaf Alarm |
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| Save addr + 66 | Transmitter Battery state |
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| Save addr + 67 | Console Battery voltage |
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| Save addr + 68 | Forecast Icons |
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| Save addr + 69 | Forecast Rule Number |
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| Save addr + 70 ~ 71 | Sunrise hour/minute |
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| Save addr + 72 ~ 73 | Sunset hour/minute |
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| <Table 1> Save address and contents of Vantage Pro2 Weather Observation communication driver's LOOP read command | |||
If you click the icon 
in protocol
option part, you can see the dialog box such as <Figure 2>. you can also set
read schedule by using this part.
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| <Figure 2> Vantage Pro2 Weather Observation driver's Option dialog box |
Communication stop time after LF command can be set at 'LF Command After Sleep Time' part of <Figure 2>.
You can set read schedule by using 
, 
, 
button
and listbox of <Figure 2>.
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| <Figure 3> Vantage Pro2 Weather Observation driver's read schedule Add/Edit dialog box |
When you click Add button or Edit button in dialog box of <Figure 2>, dialog box of <Figure 3> is shown.
You can send command to device by using write settings
Digital Write
Digital write setting parameters are as follows :
1) Port Connected Port number. (Not COM number)
2) Station Don't care.
3) Address Don't care
4) Extra1 Input command to output. (Output by attaching LF, CR additionally behind command)
5) Extra2 Don't care.
Write example 1)
Port : 0 Station : 0 Address : 0000, Extra1 : VER, Extra2 : Blank
If you set as above and output the digital value, you can send VER command to device.
(Write command just send command to device, it isn't bring read value. Refer to communication code only.)
Analog Write
Analog write setting same with digital write setting.
<Figure 4> is appearance of Vantage Pro2 device, and <Figure 5> is appearance of real equipment which is installed on site(Connect with Vantage Pro2 wireless).
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| <Figure 4> Appearance of Vantage Pro2 device |
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| <Figure 5> Appearance of real equipment which is installed on site(Connect with Vantage Pro2 wireless) |