DESIGNER’S HANDBOOK 4189350049C EN
Page 42 of 206
The wind data is coming from a DEIF WSS 550 wind sensor connected to RX/RTX 2 (RS-485) on the NX2
mounted in slot 2 (in XDi, this input is presented as 2.2).
To calculate the true wind data, speed and heading information is required. In this example speed and heading
da
ta is available on one NMEA output from the ship’s integrated navigation system. This output is connected to the
RX1 input on the NX2 module in slot 2 (in XDi presented as 2.1).
XDi/NX2: NMEA input S2.2 (sensor data):
Wind speed: $WIMWV,220.0,R,028.0,N,A*29
XDi/NX2: NMEA input S2.1 (Nav. data):
Speed data: $VDVBW,06.0,00.0,A,05.0,00.0,A,00.0,V,00.0,A*45
Heading:
$HEHDT,194.2,T*21
We select auto scan by pushing the OK button, and the automatic NMEA input scanning is performed.
After a short period of time, the numbers in the right side will be stable. This means that no new data sources are
detected.
“Supported data sources” are all the sources that can be set up for NMEA in the selected product profile. Normally
it covers all data types that the different indicators in the library will use. It also includes the dimmer groups that can
be controlled by NMEA. Normally, this figure is more than what is needed for the selected indicator.
In this case, we have selected one of the most complex wind indicators that is able to present relative wind and
calculated true wind data, and it has found 8 usable data sources and auto-selected all 8.
“Active inputs (Slot.RX)” show the ports that NMEA data is currently receiving from.
