TrimTrac ProE Locator Technical Manual page 42

message even though a geofence violation may be in effect. Nonetheless, if a
geofence violation is in effect, the Geofence Status will still be set to
"1=Violation" even if a RESP_GEOFENCE_CONFIG message is not attached.
Each new POSITION_REP sent while a geofence violation is in effect will have
the TriggerType set "2=Exception Report Alert". Similarly, if the device is
unable to get a subsequent position fix or if the IDLE Timeout, T1, has expired
due to no motion, the STATUS_MESSAGE with have the TriggerType set
"2=Exception Report Alert". In all cases, the Geofence Status flag in either the
POSITION_REP or STATUS_MESSAGE will be set "1=Geofence Violation"
until a new position fix that is not in violation with the geofence parameters is
computed.
When the device enters or leaves a geofence area and a geofence violation no
longer exists, the device will transmit the REPORT_POS message containing the
location information on which this determination has been made. In this "All-
Clear" REPORT_POS message, the Geofence Status flag will be set "0=No
Violation" and the TriggerType will be set "2=Exception Report Alert" even if all
other alerts are also in a normal status.
In the case of boundary crossing geofence, the TrimTrac will report once and only
once each time a geofence boundary is crossed by sending a new
POSITION_REP and a RESP_GEOFENCE_CONFIG message. If SMS is being
used, both messages will be included in a single SMS message. The
POSITION_REP will have the TriggerType set "2=Exception Report Alert", the
position that first triggered the boundary crossing notice and the Geofence Status
field will be set "1=Violation". The RESP_GEOFENCE_CONFIG message will
denote which particular geofence had a boundary crossed.
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