User's Manual

DRAFT TrimTrac Locator Technical Manual 28
b. The most recent transition from the IDLE state to the STATUS
state was caused by motion during the IDLE state for more than T7
seconds; AND
c. No motion had been detected between the time the motion detector
latch was last reset and before the device entered the most recent
IDLE state; AND
d. The GSM protocol stack confirms that queued Motion Report has
been sent.
3. To the QUERY state if the GSM protocol stack confirms that queued
TrimTrac locator messages, other than a Motion Report, have been sent.
4. To the DELAY state if:
a. The TRANSMIT Timeout countdown timer, T3, expires; AND
b. The most recent transition from the IDLE state to the STATUS
state was caused by motion during the IDLE state for more than T7
seconds.
Upon transitioning from the TRANSMIT state to any state other than the QUERY
state, the TrimTrac locator will power off the GSM hardware.
QUERY State
Upon entering the QUERY state from the TRANSMIT state, the TrimTrac locator
will:
1. Start the QUERY countdown timer, T5;
2. Standby to receive and acknowledge any messages from the server
application sent via the GSM network.
The TrimTrac locator will transition from the QUERY state when the later of the
following occurs:
1. The QUERY Timeout countdown timer, T5, expires; OR
2. The TrimTrac locator has finished processing any messages received prior
to expiration the QUERY Timeout countdown timer, T5.
The TrimTrac locator will transition from the QUERY state to either the IDLE or
DELAY states as follows:
1. To the IDLE state if expiration of the RTC Wakeup countdown timer, T1,
caused the initial transition from the most recent IDLE state to the
STATUS state.
2. To the DELAY state if motion caused the initial transition from the most
recent IDLE state to either the FIX or STATUS state:
Upon transitioning from the QUERY state, the TrimTrac locator will power off
the GSM hardware.