Installation manual

Serial Interface Specifications

Apollo GX50/60/65 Installation Manual

Table 9 Moving Map Binary Route Data

Byte Data Format Description

1 w Item designator

2-3 dd Current waypoint number in ASCII (01h to 20h)

4 xiannnnn Sequence number

x = undefined

i = 1 if last waypoint

a = 1 if active waypoint

nnnnn = unsigned binary waypoint number

5-9 ddddd ASCII waypoint identifier

sddddddd

xxmmmmmm

xhhhhhhh

Waypoint latitude - packed, unsigned binary

s = sign: 0 for north, 1 for south

ddddddd = degrees

mmmmmm = minutes

hhhhhhh = hundredths of minutes

x = undefined

sxxxxxxx

dddddddd

xxmmmmmm

xhhhhhhh

Waypoint longitude

s = sign: 0 for east, 1 for west

dddddddd = degrees

mmmmmm = minutes

hhhhhhh = hundredths of minutes

x = undefined

nnnnnnnn

Magnetic variation at waypoint

LS byte (msbit...lsbit)

MS byte (msbit...lsbit)

Two’s complement binary in sixteenths of degrees, easterly

variation is positive.

19 <CR> ASCII carriage return (0Dh)