Garmin Apollo CNX80 Installation Manual - page 136
Appendix B - Serial Interface Specifications
B-8
560-0982-01 Rev A
GNS 480 (CNX80) Installation Manual
B.2.1.1 Moving Map Data
Definitions of the Moving Map output data are included in Table B- 6 and Table B- 7. A sample output
message is included in Figure B-3.
The serial output messages are in the following format.
....................................................item data (format listed in following table)
Table B- 6 - Moving Map ASCII Navigation Data
ID Data
Format
Length
Description
A sddmmhh
7
Present
latitude
s =sign: N for north, S for south
dd = degrees
mm = minutes
hh = hundredths of minutes
B sdddmmhh
8
Present
longitude
s = sign: E for east, W for west
ddd = degrees
mm = minutes
hh = hundredths of minutes
C
ddd
3
Track (magnetic): ddd = degrees
D
ddd
3
Ground speed: ddd = knots
E
ddddd
5
Distance to active waypoint: ddddd = nm x 10
G
sdddd
5
Cross track error:
s = sign: R for right, L for left of course
dddd = distance off course, hundredths of nm
I
dddd
4
Desired track (magnetic):
dddd = degrees x 10
K
ddd[dd]
3 to 5
Active waypoint identifier:
ddd[dd] = ASCII waypoint identifier
L
dddd
4
Bearing to active waypoint (magnetic):
dddd = degrees x 10
Q sddd
4
Magnetic
variation:
s = sign: E for east, W for west
ddd = degrees x 10
T
---A-----
9
Warnings: The 4th character will be an “A” when the navigation
data is flagged, otherwise, all characters will be dashed. All other
navigation data will be dashed when it is flagged.
a eampht
8
Annunciator Flags:
e =
Approach Enabled
{ ‘-‘ (off) || ‘O’(on) }
a =
Approach Active
{ ‘-‘ (off) || ‘O’(on) || ‘B’ (blink)}
m =
Message
{ ‘-‘ (off) || ‘O’(on) || ‘B’ (blink)}
p =
Parallel Track
{ ‘-‘ (off) || ‘O’(on) }
h =
Hold
{ ‘-‘ (off) || ‘O’(on) || ‘B’ (blink)}
t =
From/To
{‘–‘ (off) || ‘T’ (To) || ‘F’ (From)}