2.3. Autopilot control
Modern autopilots have the following modes:
• Standby.
In this mode, autopilot is not engaged to the vessel control.
• Auto.
The autopilot has a fixed course to steer.
• Wind.
The autopilot steers the boat at a specified angle to the wind.
• Waypoint.
The autopilot steers the boat to the specified waypoint.
• Route or Track.
The autopilot steer the boat by a specified route.
The difference in the last two modes is that autopilot not only maintains
the right direction to the waypoint, but also tries to follow the line from the previous
to the next waypoint.
Note that Gateway server port must be configured to work in both directions
(«Bidirectional» in factory settings) to allow control of autopilot from the application.
When NMEA 2000 autopilot is controlled from an NMEA 0183 application,
it must receive:
• position of the destination waypoint (from RMB sentence);
• course from the position to the destination waypoint (APB and/or RMB);
• cross track error, means the distance and direction from the current position
to the route (APB and/or RMB and/or XTE).
Depending on the implementation, the NMEA 2000 autopilot can also use
the following data (and not only):
• vessel heading (HDG sentence), but in most systems the heading sensor
is connected directly to the autopilot;
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Summary of Contents for YDEN-02 Series
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