Vaisala WXT536, User Manual

Page: 99 / 235

Chapter 7 ___________________________________________________ Retrieving Data Messages
VAISALA_______________________________________________________________________ 97
Example of asking the CRC for the wind data message query ar1:
Command format: ar1yyy<cr><lf>
Response:
atX,Use chksum GoeIU~<cr><lf>
Example of the other data query commands with CRC (when the
device address is 0):
In every case the response contains a three-character CRC before the
<cr><lf>.
For information on selecting the parameters to include in the response
messages, changing the units and making other configurations of the
measured parameters, see
Chapter 8 Sensor and Data Message Settings,
on page 127 .
where
a
= Device address
r1 = Wind message query command
yyy = Arbitrary three-character CRC
<cr><lf> = Command terminator
where
a
= Device address
tX,Use
chksum = Text prompt
Goe = Correct three-character CRC for the ar1 command
IU~ = Three-character CRC for the response message
<cr><lf> = Response terminator
Pressure, humidity and
temperature message query = 0r2Gje<cr><lf>
Precipitation query = 0r3Kid<cr><lf>
Supervisor query = 0r5Kcd<cr><lf>
Combined message query = 0rBVT<cr><lf>
Composite data message query = 0r0Kld<cr><lf>