Vaisala WAC155, User Manual

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Q Marks the message as a query
* Asterisk, indicating that the next field is the checksum
78
Two-character checksum for the device ID
The data in the response follows the MWV message format, but the header is different:
$P<ID>MWV,<a.a>,<R>,<s.s>,<U>,<S>*<CS><cr><lf>
$P
Fixed text at the start of the response
<ID> Transmitter device ID
MWV Marks the message as a wind speed and angle message
After receiving a query that uses its device ID, the transmitter replies with an MWV message
containing the wind data. An example of a query with device ID "A":
$WIPAQ,*72
Example of response:
$PAMWV,50,R,0.0,M,A*04
The following table lists checksums and polling strings for queries with some typical device
IDs.
By default, the transmitter does not respond to an MWV query. You can enable
the response with the
SETMES command by naming any of the messages (0 ... 3)
MWVQUERY. See SETMES (page 37) .
Table 7 Checksum
ID Character <id> Checksum <CS> Polling String
A 72 $WIPAQ,*72<cr><lf>
B 71 $WIPBQ,*71<cr><lf>
C 70
$WIPCQ,*70<cr><lf>
D 77 $WIPDQ,*77<cr><lf>
E 76 $WIPEQ,*76<cr><lf>
F 75
$WIPFQ,*75<cr><lf>
G 74
$WIPGQ,*74<cr><lf>
H 7B $WIPHQ,*7B<cr><lf>
WAC155 User Guide M210822EN-E
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