Table 7 Moving Map Binary; Data. - Garmin Apollo GX50 GPS Installation Manual

Serial Interface Specifications
Byte Data Format
1 w
2-3 dd
4 xiannnnn
5-9 ddddd
10 sddddddd
11 xxmmmmmm
12 xhhhhhhh
13 sxxxxxxx
14 dddddddd
15 xxmmmmmm
16 xhhhhhhh
17 nnnnnnnn
18 nnnnnnnn
19 <CR>
58
Table 7 Moving Map Binary Route Data
Description
Item designator
Current waypoint number in ASCII (01h to 20h)
Sequence number
x = undefined
i = 1 if last waypoint
a = 1 if active waypoint
nnnnn = unsigned binary waypoint number
ASCII waypoint identifier
Waypoint latitude - packed, unsigned binary
s = sign: 0 for north, 1 for south
ddddddd = degrees
mmmmmm = minutes
hhhhhhh = hundredths of minutes
x = undefined
Waypoint longitude
s = sign: 0 for east, 1 for west
dddddddd = degrees
mmmmmm = minutes
hhhhhhh = hundredths of minutes
x = undefined
Magnetic variation at waypoint
LS byte (msbit...lsbit)
MS byte (msbit...lsbit)
Two's complement binary in sixteenths of degrees, easterly
variation is positive.
ASCII carriage return (0Dh)
Apollo GX50/60/65 Installation Manual