VBOX HD MANUAL
Page | 9
30 July 2014
CAN output
The VBOX HD has a CAN output which is present on the 5-way connector output.
Data format: Motorola
Baud rate: 500Kb/s
ID*
Update Rate
Data Bytes
1
2
3
4
5
6
7
8
0x301
100ms
(1) Sats in
view
(2) Time since midnight UTC
(3) Position – Latitude MMMM.MMMMM
0x302
100ms
(4) Position – Longitude MMMM.MMMMM
(5) Velocity. (Knots)
(6) Heading (Degrees)
0x303
100ms
(7) Altitude. WGS 84. (Metres)
(8) Vertical velocity. (M/S)
Unused
(9) Status
(10) Status
0x304
100ms
Unused
(11) Longitudinal Accel. (G)
(12) Lateral Accel. (G)
0x305
100ms
(13) Distance travelled since VBOX reset (Metres)
Unused
Unused
1)
If Satellites in view < 3 then only Identifier 0x301 transmitted and bytes 2 to 8 are set to 0x00.
2)
Time since midnight. This is a count of 10ms intervals since midnight UTC. (5383690 = 53836.90 seconds since
midnight or 14 hours, 57 minutes and 16.90 seconds).
3)
Position, Latitude * 100,000 (311924579 = 51 Degrees, 59.24579 Minutes North). This is a true 32bit signed
integer, North being positive.
4)
Position, Longitude * 100,000 (11882246 = 0 Degrees, 58.82246 Minutes West). This is a true 32bit signed
integer, West being positive.
5)
Velocity, 0.01 knots per bit.
6)
Heading, 0.01
o
per bit.
7)
Altitude, 0.01 meters per bit, signed.
8)
Vertical Velocity, 0.01 m/s per bit, signed.
9)
Status, unused.
10)
Status, unused.
11)
Longitudinal Acceleration, 0.01G per bit, signed.
12)
Lateral Acceleration, 0.01G per bit, signed.
13)
Distance travelled in meters since VBOX reset.
