-
3 -
NMEA input interface guide 33-60-466-000 REV : 2
1
PRESENTATION
The NMEA input interface allows the connection to the Topline bus of any instrument fitted
with an NMEA 0183 output (GPS, PC, etc.). It is a one-way communication gateway, which
converts the NMEA data transmitted by the instrument, into Topline channels. These can then
be used on the instruments of your Topline installation : display, driver, calculator.
The NMEA input interface allows the connection of one single instrument that delivers NMEA
frames. If you wish to connect a second instrument, you can connect it either to the NMEA input
of a TOPLINE multifunction system, or to a second NMEA input interface.
Please note that an NMEA frame transmitted by an instrument (GPS, PC, etc.) cannot replace
a channel already created by a Topline instrument of your installation.
IMPORTANT
-
Please read this guide completely before starting the installation.
-
Any electrical connection on the TOPLINE bus must carried out with the terminal box 90-60-
121. Only use TOPLINE bus cable 20-61-001.
2
LIST OF IDENTIFIED NMEA FRAMES
The NMEA input interface identifies the frames below. The interface is thus able to create up
to 40 NMEA channels on the Topline bus of your installation. These NMEA channels do not
have sub-channels.
Please note :
- Topline channels have priority : an NMEA channel will not be taken into account if an
equivalent Topline channel is already present on the bus.
- When the instrument connected to the NMEA input interface no longer transmits NMEA
frames, the last values received remain on display for 64 seconds.
Channels created
NMEA frames used
N°
Label
Priority 1
Priority 2
Priority 3
1
HEADING_MAG
HDG
VHW
2
TRUE_HEADING
HDT
VHW
3
DEPTH
DPT
DBT
--
4
MINSEC
ZDA
RMC
--
5
LOCHT
VLW
--
--
6
LOCHJ
VLW
--
--
7
HOURDAY
ZDA
RMC
--
8
TEMP_AIR
MTA
XDR
--
