B&G Network GPSplus - Manual (Page 57)

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TRANSFERRING WAYPOINT DATA
Up to four GPSPlus displays can be connected into a
Network System. This allows multiple NMEA receivers to be
used (remember that a single GPSPlus display allows two
NMEA receivers to be connected). To enable GPSPlus
displays to co-exist on the same network most of the setups
are common and the waypoint and route libraries must be
identical.
When another GPSPlus display is added the data is usually
transferred automatically via the system network cables.
Occasionally automatic data transfer is unsuccessful and it
is necessary to manually initiate the transfer of waypoint
and route library data from one unit to the other. Data
transferred to other NMEA devices (not GPSPlus displays)
is always initiated manually.
The copying of data, whether between GPSPlus displays or
other NMEA devices, is called Uploading or Downloading
depending on the direction of the data transfer.
DOWNLOADING
There are two methods of Downloading:
1. Downloading Via B&G Network
This is when data is copied between GPSPlus
displays via the B&G Network.
2. Downloading Via NMEA Interface
Waypoint data can also be transferred to other NMEA
devices. This is accomplished via the GPSPlus
display NMEA interface cable. The waypoints to be
downloaded are selected one by one, and then
transferred as a complete block of data in an NMEA
sentence $IIWPL.
UPLOADING
Uploading of waypoints is accomplished via the secondary
NMEA device socket (on the rear case of the GPSPlus
display) and cable directly from the position fixer selected.
All waypoints are transferred until the ENTER key is
pressed to terminate uploading.
The following procedures accomplish data transfer.