Installation manual

18 | System architecture
Data Bridging
• Supported NMEA0183 sentences entering the system are bridged (converted) to
SimNet / NMEA2000 and distributed on the SimNet backbone for all other displays to
use
• Certain SimNet /NMEA2000 PGNs (messages/sentences) are bridged across to
NMEA0183 to be available as an output from any NSO / NSE processor
• Ethernet to SimNet: Limited data is bridged from the Ethernet echosounder. Speed,
depth and temperature are bridged to SimNet and NMEA0183. Depth, speed and
temperature data from the echosounder is the only data bridged from Ethernet
0183
RX -
RX +
TX -
TX +
NMEA0183 Talker
SimNet Network
GPS
Heading
NSO 1
SimNet Network
NMEA0183 Listner
B
NSO 2
NMEA0183
Example of data bridging
A In this example a NMEA0183 (talker) is connected to NSO 1
B The NMEA sentences are bridged across to SimNet and distributed on the
SimNet network. Note: AIS data is not bridged.
C The NMEA0183 listener connected to NSO 2 can receive the NMEA0183 sen-
tences from the device connected to NSO 1 and also from other devices that
are on the SimNet network, in this case heading and GPS
An NMEA talker can be connected to each NSO MPU and both set of data will be
converted to SimNet. Each display can be setup for outputting selected NMEA sentences.
Speed, temp and depth data from the echosounder transducer that is to be displayed
as an instrument has to bridged from Ethernet to SimNet. An NSO display has to be
nominated to bridge the data. If this nominated display is turned off, no data will be
displayed, until the display is turned on or another display is selected to bridge the data
(see Data Setup on page 55).
NMEA0183 to SimNet bridging only applies to the NMEA0183 sentences outlined in the
Supported NMEA0183 Sentences section of this manual (see page 89).