WI
Talker identifier
(WI = weather instrument)
TXT
Text transmission identifier.
xx
T
otal number of messages, 01 to 99
xx
Message number.
xx
Text identifier
(see text message table)
c---c
Text message (see text message table)
*
Checksum delimiter
hh
Two-character checksum for the query command.
<cr><lf>
Response terminator
Examples:
W
ind da
ta request when all the wind parameters were disabled from the wind message:
$WItXT,01,01,01,Unable to measure error*6D<cr><lf>
Unknown command 0XO!<cr><lf>:
$WITXT,01,01,03,Unknown cmd error*1F
Wr
ong checksum used in MWV query command:
$WITXT,01,01,08,Use chksum 2F*72
7.4.6 Automatic Mode
When NMEA 0183 v3.0 automatic protocol is selected, the transmitter sends data messages
at
user-configurable update intervals. The message format is the same as in the MWV and
XDR data queries. The NMEA wind formatter parameter in the wind sensor settings
determines whether the wind messages are sent in MWV or XDR format.
You can use ASCII data query commands aR1, aR2, aR3, aR5, aR, aR0 and their CRC-
versions ar1, ar2, ar3, ar5, ar and ar0 also in NMEA 0183 protocol. The responses to
these commands are in standard NMEA 0183 format.
More Information
‣
Sensor Configuration and Data Message Formatting (page 117)
WXT530 Series User Guide M211840EN-D
114
sales@streamlinemeasurement.co.uk
www.streamlinemeasurement.co.uk
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