Nmea 0183 V3.0 Query With Ascii Query Commands - Vaisala WXT536 User Manual

User's Guide ______________________________________________________________________
NOTE
192 _________________________________________________________________ M211840EN-C
$WIXDR,C,25.8,C,10,U,10.6,N,8,U,10.9,V,9,U,3.360,V,
10*7C<cr><lf>
Now the response messages of all three transmitters can be recognized
and parsed by the data logger.
The transmitter address may consist of letter characters but the
transducer IDs in the NMEA XDR messages can only be numbers. The
addresses given in letters will show in the transducer IDs in the
following way: transmitter address = A => transducer ID = 10, B =>
11, a => 36, b => 37 etc.
NMEA 0183 v3.0 Query with ASCII
Query Commands
You can use ASCII 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 will be in standard
NMEA 0183 format and the transmitters are assigned with different
addresses (for example: aXU,A=0,1,2, ... ). The RS-485 line delays are
not needed.
Example (a bus with three transmitters, data requests with
combined data message query commands; the same message
parameter configuration as in the previous example):
WXT530 #1 communication settings:
0XU,A=0,M=Q,C=3,I=0,B=4800,D=8,P=N,S=1,L=25
WXT530 #2 communication settings:
0XU,A=1,M=Q,C=3,I=0,B=4800,D=8,P=N,S=1,L=25
WXT530 #3 communication settings:
0XU,A=2,M=Q,C=3,I=0,B=4800,D=8,P=N,S=1,L=25
The query for WXT530 #1 and the response:
0R<cr><lf>
$WIXDR,A,316,D,0,A,326,D,1,A,330,D,2,S,0.1,M,0,S,0.1,M,1,S,0.1,
M,2*57<cr><lf>