Vaisala WXT510 - Manual (Page 138)

User’s Guide ______________________________________________________________________
136 _________________________________________________________________ M210470EN-D
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 shall be assigned with
different addresses (for example: aXU,A=0,1,2, ... ). The RS-485 line
delays are not needed.
Example (a bus with three WXT510s, data requests with combined
data message query commands; the same message parameter
configuration as in the previous example):
WXT510 #1 communication settings:
0XU,A=0,M=Q,C=3,I=0,B=4800,D=8,P=N,S=1,L=25
WXT510 #2 communication settings:
0XU,A=1,M=Q,C=3,I=0,B=4800,D=8,P=N,S=1,L=25
WXT510 #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 WXT510 #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>
$WIXDR,C,24.0,C,0,C,25.2,C,1,H,47.4,P,0,P,1010.1,H,
0*54<cr><lf>
$WIXDR,V,0.000,I,0,Z,10,s,0,R,0.01,I,0,V,0.0,M,1,Z,0,s,1,R,0.0,M,
1*51<cr><lf>
$WIXDR,C,25.8,C,2,U,10.7,N,0,U,10.9,V,1,U,3.360,V,2*7D<cr><lf>
The query for WXT510 #2 and the response:
1R<cr><lf>
$WIXDR,A,330,D,1,A,331,D,2,A,333,D,3,S,0.1,M,1,S,0.1,M,2,S,0.2,
M,3*55<cr><lf>