EFD1000 Installation Manual
DOCUMENT # A-01-126-00 PAGE 74-225 Revision H
© Copyright 2009 Aspen Avionics Inc.
ID VALUE VALUE FORMAT DESCRIPTION
[dd] is optional for up to 5 characters
L Bearing to Active Waypoint dddd dddd = bearing in degrees x 10
Q Magnetic Variation sddd s = sign (E for east, W for west)
ddd = degrees x 10
T Warnings ---A----- A indicates GPS NAV flagged
Otherwise, all dashed
w Waypoint Info See below
'w' messages are waypoint route information and correspond to the flight plan
programmed in the GPS navigator. A unique 'w' message is allocated for each waypoint
in the current flight plan. The following table describes the bit coding within the
message value field.
Byte VALUE VALUE FORMAT DESCRIPTION
1
ID from above table w ASCII Character
Indicates beginning of a single waypoint
item
2-3 Waypoint Number dd ASCII Characters
dd = waypoint number represented with
two ASCII characters
4 Sequence Number xiannnnn Packed unsigned binary
x = not used
i = 1 if last waypoint in route
a = 1 if active waypoint in route
nnnnn = waypoint number
5-9 Waypoint Identifier ddddd ASCII Characters
Identifier as 5 ASCII characters
10 Waypoint Latitude sddddddd Packed unsigned binary
s = sign (0 for north, 1 for south)
ddddddd = degrees
11 Waypoint Latitude xxdddddd Packed unsigned binary
x = not used
dddddd = minutes
12 Waypoint Latitude xddddddd Packed unsigned binary
x = not used
ddddddd = hundredths of minutes
13 Waypoint Longitude sxxxxxxx Packed unsigned binary
s = sign (0 for east, 1 for west)
14 Waypoint Longitude dddddddd Packed unsigned binary
dddddddd = degrees
15 Waypoint Longitude xxdddddd Packed unsigned binary
x = not used
dddddd = minutes
16 Waypoint Longitude xddddddd Packed unsigned binary
x = not used
ddddddd = hundredths of minutes
17 Magnetic Variation dddddddd Packed unsigned binary
dddddddd = LS Byte
18 Magnetic Variation dddddddd Packed unsigned binary
dddddddd = MS Byte
19 Waypoint Terminator <CR> ASCII Character
Packet terminator
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