Vaisala WMT52 - Manual (Page 128)

User’s Guide ______________________________________________________________________
126 __________________________________________________________________M210925EN-B
NMEA 0183 v3.0 Query with ASCII
Query Commands
You can use ASCII query commands aR1, aR5, aR, aR0 and their
CRC-versions ar1, ar5, ar and ar0 also in NMEA 0183 protocol. The
responses to these commands will be in standard NMEA 0183 format.
and the sensors 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 WMT52s, data requests with combined
data message query commands; the same message parameter
configuration as in the previous example):
WMT52 #1 communication settings:
0XU,A=0,M=Q,C=3,I=0,B=4800,D=8,P=N,S=1,L=25
WMT52 #2 communication settings:
0XU,A=1,M=Q,C=3,I=0,B=4800,D=8,P=N,S=1,L=25
WMT52 #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 WMT52 #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 WMT52 #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>
$WIXDR,C,23.5,C,1,C,24.3,C,2,H,49.3,P,1,P,1010.1,H,
1*59<cr><lf>