RS232/NMEA Output
RS232 Racelogic Data Format
Protocol:
115200 Baud, no parity, 8 data bits, 1 stop bit
Message format:
$VBSS25$glbtttaaaaoooovvvhhAAAVVVDspprrSSHHPPRRyyxxYYzzddTTTkkqQQT1T1wwwWWWiicc
You can find the full list of Channel Definitions here.
Parameter | Number of bytes | Supported* | Description |
---|---|---|---|
$VBSS25$ | 7 | N/A | Header |
g |
1 |
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GPS sats Number of GPS satellites used |
l |
1 |
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GLONASS sats Number of GLONASS satellites used |
b |
1 |
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BeiDou sats Number of BeiDou satellites used |
ttt |
3 (MSB first) |
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Time Ticks since midnight UTC, incrementing every 10 ms |
aaaa |
4 (MSB first) |
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Latitude Signed integers, 0.0000001° per bit |
oooo |
4 (MSB first) |
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Longitude Signed integers, 0.0000001° per bit |
vvv |
3 (MSB first) |
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Velocity 0.001 km/h per bit |
hh |
2 (MSB first) |
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Heading 0.01° per bit |
AAA |
3 (MSB first) |
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Altitude 0.01 m per bit |
VVV |
3 (MSB first) |
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Vertical velocity 0.001 m/s per bit |
s |
1 |
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Solution type |
pp |
2 (MSB first) |
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Pitch angle derived from KF 0.01° per bit |
rr |
2 (MSB first) |
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Roll angle derived from KF 0.01° per bit |
SS | 2 (MSB first) | ![]() |
Slip angle derived from KF 0.01° per bit |
HH |
2 (MSB first) |
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Heading derived from KF 0.01° per bit |
PP
|
2 (MSB first) |
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Pitch rate derived from internal/external IMU 0.01°/sec per bit |
RR
|
2 (MSB first) |
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Roll rate derived from internal/external IMU 0.01°/sec per bit |
yy |
2 (MSB first) |
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Yaw rate derived from internal/external IMU 0.01°/sec per bit |
xx |
2 (MSB first) |
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X accel from internal/external IMU 0.01 m/s² per bit |
YY |
2 (MSB first) |
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Y accel from internal/external IMU 0.01 m/s² per bit |
zz |
2 (MSB first) |
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Z accel from internal/external IMU 0.01 m/s² per bit |
dd |
2 (MSB first) |
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Date DOS format |
TTT |
3 (MSB first) |
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Trigger event time 0.000001 ms per bit |
kk |
2 (MSB first) |
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Kalman Filter Status |
q |
1 |
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Position Quality |
|
2 (MSB first) |
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Speed Quality 0.001 m/s per bit |
T1T1 |
2 (MSB first) |
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T1 0.0000001 ms per bit |
www |
3 (MSB first) |
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Wheel speed 1 0.001 m/s per bit |
WWW |
3 (MSB first) |
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Wheel speed 2 0.001 m/s per bit |
ii |
2 (MSB first) |
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Heading_IMU2 derived from KF 0.01° per bit |
cc |
2 (MSB first) |
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See CRC Calculation example below |
*Unsupported channels will be displayed as 0.
NMEA Output
The VBOX 3iS can output 7 types of NMEA messages:
- GGA
- GLL
- RMC
- VTG
- GSA
- GSV