TrimTrac ProE Locator Technical Manual v2.0e
33
Automatic Message Log Dump
In certain geographic areas, TrimTrac ProE will travel in and out of GSM
coverage. The device will continue logging position fixes and status messages
even while out of GSM coverage, but obviously it will not be able to send them
when they are logged if there is no GSM coverage. The Automatic Message Log
Dump feature will cause the TrimTrac ProE transmit all messages which would
have otherwise been sent had there been GSM coverage at the time they were
created and logged once a GSM network connection has been re-established.
Automatic Message Log Dump can be enabled either during initial provisioning
of the device or through the use of over-the-air commands.
The Automatic Message Log Dump feature must be used with a certain amount of
discretion as it does not differentiate between the different message TriggerTypes.
Any message that should have been transmitted had there been GSM coverage at
the time will, assuming GSM coverage is re-established, get transmitted by the
Automatic Message Log Dump feature. The importance of this statement
becomes apparent when one or more priority input alerts get activated while
outside GSM coverage.
If one or more get activated while there is no GSM coverage, then the TrimTrac
ProE will continuously attempt to transmit those alerts until a successful
transmission results. In the meantime, each of the failed transmit attempts are
placed in the TrimTrac ProE message log with the GSM Status set “2=No
Network”. Once the TrimTrac ProE has re-entered GSM coverage, it will begin
transmitting each of the previously failed transmit messages. Depending upon
how long the device was outside of GSM coverage with the alerts activated, this
could result in a very large number of messages being transmitted at a high rate.
Should this situation occur, then the server application should be prepared to
acknowledge the incoming alerts AND to automatically reconfigure the TrimTrac
to disable the Automatic Message Log Dump feature. It should be noted that re-
transmitted alert messages will have Report Sequence Numbers lower than the
alert message first received by the server application.
Finally, the TrimTrac ProE message log could be completely filled with alert
messages if the device remained outside GSM coverage for a long enough time
period while one or more alerts were activated. The message log will hold up to
1,024 most recent messages. Once full, new messages will overwrite the oldest
messages.
Motion Report Flag
If a TrimTrac ProE has been a rest for a while, it is likely in the IDLE State.
Once the device starts to move, default settings will cause the device to start
computing a new GPS position and then report it. Depending upon the GPS
signal at the time and how long it has been since the device computed its last
position, the time to compute and report a new GPS fix can vary. Moreover, if
there is insufficient GPS signal to compute a new fix, no new message will be
sent to the server application until the FIX State Timeout, T2, has expired.
Содержание ProE Locator
Страница 83: ...TrimTrac ProE Locator Technical Manual v2 0e 65 Figure 19 External GPS Antenna Connected to TrimTrac ProE ...
Страница 112: ...TrimTrac ProE Locator Technical Manual v2 0e 94 Figure 24 HPA Processing in TRANSMIT ...
Страница 113: ...TrimTrac ProE Locator Technical Manual v2 0e 95 Figure 25 MPA Processing in TRANSMIT ...
Страница 114: ...TrimTrac ProE Locator Technical Manual v2 0e 96 Figure 26 LPA Processing in TRANSMIT ...
Страница 115: ...TrimTrac ProE Locator Technical Manual v2 0e 97 Figure 27 Other Message Processing in TRANSMIT ...
Страница 150: ...TrimTrac ProE Locator Technical Manual v2 0e 132 Default AT CTKY 10 10 10 10 0 300 60 0 0 0 0 1 0 ...
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Страница 192: ...TrimTrac ProE Locator Technical Manual v2 0e 174 ZZ Checksum Table 78 RESP_EXT2_APP_CONFIG Message ...
Страница 205: ...TrimTrac ProE Locator Technical Manual v2 0e 187 Quick Reference Tables ...
Страница 231: ...TrimTrac ProE Locator Technical Manual v2 0e 213 Figure 36 Vehicle Adapter Module Alert Wiring Diagram ...
Страница 232: ...TrimTrac ProE Locator Technical Manual v2 0e 214 Figure 37 Control Module Wiring Diagram ...