4.23. UNIT’S TAIP REFERENCE
that this time will be the signal activation period when the vehicle is
stationary.
The
Minimum Time
takes control of the signal when the unit exceeds
the
Distance threshold
. Assuring that even when the unit is exceeding
the
Distance threshold
it will not activate the signal too frequently,
no more frequent than the configured minimum time value. One way
of seeing this parameter is that this time will be the report period
when the vehicle is moving too fast.
A
Time and Distance
counter is created with the following parame-
ters:
1. Distance Threshold.
2. Minimum Time.
3. Maximum Time.
The
TD
message allows to configure the parameters that control the
Time & Distance
signals’ trigger.
Ten TD counters may de defined
independantely.
The message has the following format:
ABBBB[CCCCDDDDEEEE]
Chars
Item
Format
Value
Meaning
1
TD index
A
0-9
Time and distance index.
4
Minimum
Time
BBBB
seconds
Minimum
amount
of
time
elapsing between reports.
To
enable just time reporting, this
is the only parameter to set,
and the others should be set
to 0.
Setting this value to 0
disables the report.
4
reserved
CCCC
This parameter is ignored and
can have any value.
4
Distance
DDDD
x100
me-
ters
Distance the unit must travel
between reports.
Each unit rep-
resents 100 meters.
4
Maximum
Time
EEEE
seconds
Maximum
amount
of
time
elapsing between signals’ acti-
vation. This parameter is only
relevant when distance report-
ing is desired. If set to 0, there
is no limit to the amount of
time between reports.
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