Report; Report Queuing; Ack'ed Mode - M-Labs PM-H User Manual

the configuration of the device.
The device can be put into several levels of low power mode whenever it runs on the internal
backup battery, or if the external input voltage is low or if it is not movingdepending on how
the unit is configured through AT commands.
Power Mode
Full Power (Track)
Listen
Stealth
The device would return to full power whenever an event occurs that triggers a report. Those
events include:

Report timer

GPIO change

IP change

Battery threshold

Heartbeat

Watchdog

Power-up

Motion Detected
Any hardware or software reset will return the device to full power mode.

3.5 Report

The PM-H captures data and forms a report record with that data. A report is a data structure
containing all of the sensory and other typically useful data on the device. Reports are
generated in response to specified events, such as periodic timeout, speed threshold,
geo-fence crossing, etc., or in response to a Report Now command (AT+XRN).

Report Queuing

If a report trigger occurs while UDP connection is unavailable, it will be queued until
connection becomes available and transmitted at such time. The only way report(s) can be lost
is if too many reports are queued and the report-queue is overflowing. In such case the earliest
report(s) will be discarded. The size of the queue can be configured via the Report Queue
(AT+XRPQ) command.

Ack'ed Mode

UDP is not a 100% reliable connection and occasional reports or command/responses may be
lost. Since all commands have responses, the server can repeat any command to which there
is no response. In order to assure reliable reception of reports, Arsenal devices can be
configured either in Normal or Ack'ed mode to send the reports. In the Normal mode the
reports are simply sent "as is" with no acknowledgment from the server. In the Ack'ed mode
every report sent is expected to be acknowledged by the server by sending back an ACK
message back. If acknowledgement is not received within the specified timeout, the report is
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