-18-
PRO
PILOT
725 INSTALLATION & SERVICING MANUAL
Installing
Optional
Equipment
been
selected.
Because
of
this,
the
operation
when
waypoints
are
reached
will
depend
on
the
type
of
data
received
from
your
navigator.
NMEA 0180
Unless
there
is
only
a
small
(say
15º
or
less)
change
in
required
track,
it
is
necessary
to
turn
the
vessel
to
the
new
track
using
the
course
select
control
or
by
placing
pilot
in
standby
mode
and
manually
steering
to
the
new
track.
NMEA 0182 &
Most
0182
and
0183
data
outputs
have
all
the
information
NMEA 0183
required
for
the
craft
to
turn
automatically
on
to
the
next
track
without
any
action
on
your
part.
If
your
craft
does
not
do
this,
check
with
the
supplier
of
your
navigator
to
see
if
the
data
contains
one
of
the
sentences
containing
Heading
to
Waypoint
and
Waypoint
Number.
If
not,
you
may
have
to
operate
your
autopilot
as
if
it
were
NMEA
0180
(or
0182)
depending
on
data
available.
Navigators with 0182 and 0183 output True Heading, Magnetic
Heading or both. If only True heading is available the local
variation should be entered into the autopilot (see the
Installation Settings Section).
NMEA 0183
The
Autopilot
is
capable
of
processing
the
following
NMEA
0183
messages.
To
obtain
full
use
of
the
interface
at
least
one
message
containing
Cross
Track
Error,
Heading
to
Waypoint
and
Waypoint
number
must
be
present
in
the
data
received
from
the
Navigator.
MESSAGE
CROSS TRACK
HEADING TO
WAYPOINT
WIND
ERROR
WAYPOINT
NUMBER
ANGLE
APA
ü
ü
ü
-
APB
ü
ü
ü
-
BOD
-
ü
ü
-
BWC/BWR
-
ü
ü
-
XTE
ü
-
-
-
RMB
ü
ü
ü
-
V W R
-
-
-
ü
ü
Indicates that the data should be present in the given
message according to the NMEA 0183 specification.
