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Manual R600V.DAH5 Multi-object (EN)
Page 24 of 36
R600V.DAH5_multiobject_manual_1.1 (EN).docm
3.3.7.
Vehicle Speed Message
PGN:
0xC100
PDU Type:
PDU1
Direction:
Receive
Reception address:
Broadcast or device address
Reception rate:
< 1000ms
This message may be used to inform the sensor of the current vehicle speed. This message
is optional; the device is able to perform its functionality without this information, as long as
the speed differential is low.
All values are in
“little endian” format. Bit1 of byte 1 = LSB of first byte
Tab 13
Effective Vehicle Speed Message
Start bit
Bits
Offset
Scaling
Description
1
16
0
1mm/sec.
Effective vehicle speed
17
1
0
1
Sign (0/1 = forward/reverse)
18
48
0
1
Don’t care
The effective vehicle speed depends on the mounting angle towards the object. Depending
on this angle the speed transmitted needs to be corrected. No speed signal is required if the
measurement perpendicular to the vehicle movement.
Fig 13
Effective Vehicle Speed v
eff
𝑣
𝑣𝑒ℎ
𝑣
𝑒𝑓𝑓
= sinሺ0ሻ 𝑣
𝑣𝑒ℎ
= 0
𝑣
𝑒𝑓𝑓
= sinሺ𝛼ሻ 𝑣
𝑣𝑒ℎ