Use the same data query commands as in the previous sections but type the first letter of the command in lower case and add a correct three-character CRC before the command terminator. The response also contains a CRC.
Command format for requesting a wind data message with a CRC
ar1xxx<cr><lf>| a | Device address |
| r1 | Wind message query command |
| xxx | Three-character CRC for ar1 command |
| <cr><lf> | Command terminator |
Example of the response (the parameter
set is
configurable):
0r1,Dn=236D,Dm=283D,Dx=031D,Sn=0.0M,Sm=1.0M,Sx=2.2MLFj<cr><lf>The three characters before <cr><lf> are the CRC for the response.
| To request the correct CRC for each command, type the command with an arbitrary three-character CRC. |
Example of asking the CRC for the wind data message query ar1:
Command format:
ar1yyy<cr><lf>| a | Device address |
| r1 | Wind message query command |
| yyy | Arbitrary three-character CRC |
| <cr><lf> | Command terminator |
Response:
atX,Use chksum GoeIU~<cr><lf>| a | Device address (default = 0) |
| 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 |
Example of the other data query commands with CRC (when the device address is 0):
| Parameter | Description |
|---|---|
| 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> |
In every case the response contains a three-character CRC before the <cr><lf>.