Furuno GP-31, Operator'S Manual

Page: 53 / 81

7-13
when the number of characters are less
than 6.)
6: Waypoint color (This field is always kept
NULL.)
7: Waypoint comment (2 byte for mark
code + 16 characters of comment.)
1st byte of mark code: Fixed to '@'.
2nd byte of mark code:Internal mark
code + 'a' (0 x 61). See Note 1.
Number of characters for comment is
less than 16 (variable length). See
Note 2.
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: Internal mark code is 0 x 10 through
0 x 18. 0 x 71 through 0 x 79 are always
placed at 2nd byte of mark code.
Note 2: Following characters can be used
for comments:
Figure 7-35 Characters available for
comments
Route data format
Figure 7-36 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 sev-
eral GPRTE sentences (Max. 4 sentences).
This value shows the number of sentences
route data has been divided.
Route comment data format
Figure 7-37 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
Figure 7-38 End of sentence