Nexus 21 Multi Control operation manual

MULTI CONTROL

other 8 slots with even numbers, C78, C80, C82 ... C92 free to use for other NMEA sentences.

For connection of NMEA instruments OUT from Server, (see Server manual).

12.7.3Receive NMEA sentences IN to Server There are 6 different main types of NMEA sentences:

1)Position related data: Position, SOG/COG, time, and a limited amount of satellite status if a GPS is connected. The information is read if no other Nexus GPS is connected. If a Nexus GPS is connected, it will take over the navigation.

2)Navigation data: (BTW), (DTW), (BOD), (XTE), (SET) and (DRIFT).

The Server will automatically send data to the Nexus Network. E.g.: (DRIFT), (WCV), (TTG) and (CTS).

3)Speed data: is read only if (C73 BSP) is set to (ON). See 12.6.4

4)Depth data: is read only if (C74 DEP) is set to (ON). See 12.6.5

5)Compass data: is read only if (C75 CMP) is set to (ON) See 12.6.6. Heading is either (HDT) (priority) or (HDM). Magnetic variation (from Nexus Network) is added to (HDM) but not to (HDT).

6)Wind data: angle and wind speed is read from (MWV) data, only if (C76 WND) is set to (ON) See 12.6.7. True wind angle and wind speed is calculated by Nexus, when the boat speed (the speed of the water) is known.

The following NMEA sentences can be received IN to Server:

APA	Autopilot sentence ”A”
APB	Autopilot sentence ”B”
BOD	Bearing original destination
BWC	Bearing and distance to waypoint
BWR	Bearing and distance to waypoint (old)
DBT	Depth measured from the transducer position
DPT	Depth
GGA	Global positions fix data (GPS)
GLL	Geographic position, Latitude/Longitude
GSA	DOP and active satellites
GSV	Satellites in view
HDM	Heading, magnetic
HDT	Heading, true
MTW	Water temperature
RMB	Minimum navigation information
RMC	Minimum specific GPS/transit data
WCV	Waypoint closure velocity
VDR	Set & drift
VHW	Water speed and heading
MWV	Wind speed and direction
VTG	Course Over Ground and Ground Speed
XTE	Cross-track-error, measured
ZDA	Time & date
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