OMC-131 True wind display
Users’ manual
V1.14
Page 11
TDC-April-2017
2.2.8 Serial input Port 1: Wind sensor (Portside) input
Default the system expects a NMEA MWV message at 4800 baud:
$IIMWV,xxx,R,x.x,M,A*cscs
"M" means meters per second
"A" means message valid "V" means message invalid
Other options are:
-
OMC-160
-
Gill format
-
Combined NMEA
-
Etc.
If you have 2 sensors, connect the Portside sensor to port 1.
Select Combined NMEA if you connect this display as slave to another OMC-131. Use Output 4 of the
Master OMC-131 (and set it to output all NMEA).
2.2.9 Serial input Port 2: Wind sensor (Starboard) or speed log (VHW) input
$GPVHW,xxx.x,T,xxx.x,M,xx.x,N,xx.x,K,*hh
(T
= Heading in degrees true)
(M
= Heading in degrees magnetic)
N
= Speed knots
K
= Speed km/h
Only speed data will be used on port 2, for combined heading & speed use port 3 !
2.2.10 Serial input Port 3: Gyro (HDT) or combined heading & speed (VHW)
Default this port is set to Gyro input (NMEA 4800 baud) and expects the following message:
$GPHDT,xxx.x,T*hh<CR><LF>
T
= Heading degrees true
Alternatively Combined heading & speed can be chosen, the system the expects the following message:
$GPVHW,xxx.x,T,xxx.x,M,xx.x,N,xx.x,K,*hh
T
= Heading in degrees true
M
= Heading in degrees magnetic
N
= Speed knots
K
= Speed km/h
