GME GP450XB - Manual (Page 27)

GP450X INSTRUCTION MANUAL PAGE 27
data sentence description
Sentence Description
AAM Arrival alarm
APB Autopilot data (XTE and
bearing to Waypoint) .
BOD Bearing from your vessel to
destination .
BWC Range and bearing to
Waypoint (great circle
navigation) .
GGA GPS position fix condition
(time of fix, latitude,
longitude, receiving
condition, number of
satellites used, DOP)
GLL Latitude and longitude
RMB Generic navigational
information (cross track
error, steering direction,
starting Waypoint no .,
destination Waypoint no .,
latitude and longitude of
starting Waypoint, latitude
and longitude of destination
Waypoint, range and
bearing to Waypoint, range
and bearing from present
position to destination
Waypoint, velocity to
destination, arrival alarm) .
RMC Generic navigational
information (UTC time,
latitude, longitude, ground
speed, true course, day,
month, year) .
VTG Actual track and ground
speeds .
XTE Course error amount and
direction to steer .
ZDA UTC time (day, month, year) .
WayPoINt data format
1 . Waypoint latitude
2 . N/S
3 . Waypoint longitude
4 . E/W
5 . Waypoint name (Number of character is fixed at 6 . Where
less than 6 characters are used, remainder are filled with
space characters) .
6 . Waypoint colour (this field is always NULL) .
7 . Waypoint comment (2 Bytes for MARK code plus 16
characters of comment) .
[See Note 1 next column]
8 . Flag making Waypoint . Always set to A .
‘A’ = Displayed
‘V’ = Not displayed
9 . UTC (Always NULL)
10 . Day (Always NULL)
11 . Month (Always NULL)
12 . Year (Always NULL)
[Note 1]
Waypoint comment (2 bytes for mark code + 16 characters of
comment .)
1st byte of mark code: Fixed to ‘@’.
2nd byte of mark code: 0 x 71 through 0 x 79
(Internal mark code 0 x 10 through 0 x 18)
Number of characters for comment is less than 16 (variable
length) . The following characters are available for use
in comments .
Internal mark codes
route data format
1 . Number of sentences required for one complete route data
(1 to 4) . See Note .
2 . Number of sentences currently used (1 to 4) .
3 . Message mode (Always set to C) .
4 . Route No . (01 to 51 (51 is LOG route, 2 digits required)
5. Through 12: Waypoint name (Max. 8 names, length of each
Waypoint name is fixed to 7 byte)
1st byte: Skip code ‘-’ (Hyphen) = Skip ON, Space code =
Skip OFF .
after 2nd byte: Waypoint name (fixed to 6 bytes) .
NotE: A route can contain max . 30 Waypoints and GPRTE
sentence for one route data may exceed 80-byte limitation .
In this case, route data is divided into several GPRTE sentences
(Max . 4 sentences) . This value shows the number of sentences
route data has been divided .
route comment data format
1 . Route No . (01 to 51, 2 digits required) .
2 . Route comment (Max . 16 characters, variable length) .
The same characters of the comment for Waypoint comment
can be used .
End of sentence
Waypoint Data Format
_ABCDeFGhIJKLMNOPQRSTUvWXYZ0123456789&()+-/=?}
0x10 0x11 0x12 0x13 0x14
0x18 0x17 0x16 0x15
Route Comment Data Format
end of Sentence Format
$PFEC, GPwpl,IIII.II, a, yyyyy.yyy, a, c...c, c, c...c, a, hhmmss, xx, xx, xxx
1 2 3 4 5 6 7 8 9 10 11 12 < CR > < LF >