Driver Behaviour Related Settings:
Acceleration and Deceleration Maximum Thresholds (ACMX & DCMX)
Report events can be triggered on specified thresholds of acceleration and deceleration
(i.e. braking). ACMX specifies the acceleration threshold in m/s/s * 10, integer format.
Default is 35. DCMX specifies the deceleration threshold in m/s/s * 10, integer format.
Default is 40.
Example:
$ACMX,35
set accel threshold at 3.5 m/s/s
$DCMX,45
set decel threshold at 4.5 m/s/s
Cornering Maximum Thresholds (ACMY & DCMY)
Report events can be triggered on specified thresholds of cornering force. ACMY and
DCMY specify the cornering threshold in m/s/s * 10, integer format. Default ACMY and
DCMY is 50.
Example:
$ACMY,35
set cornering accel threshold at 3.5 m/s/s
$DCMY,45
set cornering decel threshold at 4.5 m/s/s
Collision Event Threshold (COLN)
This parameter defines the acceleration/deceleration threshold (on any axis) to be
classified as a collision event. COLN specifies the threshold in m/s/s * 10, integer format.
Default is 100.
Device Orientation (ORTN)
This parameter defines the AT200 installation orientation in order to allow corrections to
be applied to the accelerometer X/Y data to ensure data is correctly orientated with the
vehicle axis. When ORTN is specified correctly (as per the table below) X data will
correspond to vehicle acceleration and deceleration and Y will correspond to cornering
forces (+ve Y corresponding to a left turn and -ve Y for right hand turns). Default is 0.
ORTN
AT200 Installation Position
Data Corrections Applied
0
unspecified
No X/Y orientation corrections applied
1
connector facing to vehicle front
No X/Y orientation corrections applied
2
connector facing to vehicle RHS
X/Y swapped & X axis sign inversion
3
connector facing to vehicle rear
Both X and Y axes sign inversions
4
connector facing to vehicle LHS
X/Y swapped & Y axis sign inversion
Other Settings:
Pass Through Data Mode (PTDM)
Pass through data mode enable. Default is 0. Set this parameter to 1 to enable Pass
Through Data Mode. Note that when Pass Through Data Mode is enabled, debug and
NMEA output are suppressed from the AT200 serial port (DBUG and NMEA set to zero).
Please refer to the appropriate Application Note for further details.
Alarm Phone Number (ALRM)
This is the delivery destination for alarm text messages sent via SMS. These are typically
sent to a GSM handset (mobile telephone). The number should be entered in
international format (e.g. +447979123456). Alarm text messages are sent for external
power loss and low external power (supply input less than the level defined by CPWR).
