Vaisala WMT700 - Manual (Page 55)

Chapter 5 ______________________________ Operating WMT700 with WS425 and SDI-12 profiles
VAISALA _______________________________________________________________________ 53
WS425 A/B NMEA Extended Commands
This command polls data from WMT700.
$WIP<id>Q,*<chk><CR><LF>
where
$WIP =
Fixed text
<id> = Data ID; A … Z
Q = Fixed text
* = Fixed text
<chk> = Checksum (8-bit XOR, excluding $ and *)
<CR> = Carriage return code, ASCII 0DH
<LF> = Line feed code, ASCII 0AH
Table 16 Checksum Table
ID Character <id> Checksum <chk> 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>
I 7A $WIPIQ,*7A<CR><LF>
J 79 $WIPJQ,*79<CR><LF>
K 78 $WIPKQ,*78<CR><LF>
L 7F $WIPLQ,*7F<CR><LF>
M 7E $WIPMQ,*7E<CR><LF>
N 7D
$WIPNQ,*7D<CR><LF>
O 7C $WIPOQ,*7C<CR><LF>
NOTE To use WMT700 with the NMEA Extended profile, either set the
autoSend parameter to 0 to enable polling or define a fixed output
interval with the autoInt parameter. If you are using automatic messages,
the value for the autoSend parameter must be set to 19.