Furuno BACK GP-80 - Manual (Page 86)

A-14
RMC- Recommended minimum specific GPS/TRANSIT data
$--RMC,hhmmss.ss,A,llll.lll,a,yyyyy.yyy,a,x.x,x.x,xxxxxx,x.x,a,a*hh<CR><LF>
| | | | | | | | | | | | |
| | | | | | | | | | | | +--- 10
| | | | | | | | | | | +----- 9
| | | | | | | | | +--+------- 8
| | | | | | | | +--------------- 7
| | | | | | | +--------------------- 6
| | | | | | +------------------------- 5
| | | | +---+---------------------------- 4
| | +---+---------------------------------------- 3
| +--------------------------------------------------- 2
+---------------------------------------------------------- 1
1. UTC of position fix
2. Status: A=data valid, V=navigation receiver warning
3. Latitude, N/S
4. Longitude, E/W
5. Speed over ground, knots
6. Course over ground, degrees true
7. Date: dd/mm/yy
8. magnetic variation, degrees E/W
9. Mode indicator(see note)
10. Checksum
NOTE Positioning system Mode indicator:
A = Autonomous
D = Differential
S = Simulator
N = Data not valid
The Mode indicator field supplements the Status field. The Status field
shall be set to V=invalid for all values of Operating Mode except for
A=Autonomous and D=Differential. The positioning system Mode indicator
and Status field shall not be null fields.
RTE - Routes
$--RTE,x.x,x.x,a,c--c,c--c,.....,c--c*hh<CR><LF>
| | | | | | |
| | | | | | +--------- 7
| | | | | +------------ 6
| | | | +----------------------- 5
| | | +---------------------------- 4
| | +-------------------------------- 3
| +----------------------------------- 2
+--------------------------------------- 1
1. Total number of messages being transmitted
2. Message number
3. Message mode:
c=complete route, all waypoints
w=working route, first listed waypoint is "FROM",
second is "TO" and remaining reset of route
4. Route identifier
5. Waypoint identifier
6. Waypoint "n" identifier
7. Checksum