
22
SMS. GPRS mode is the most preferred data sending mode. SMS mode is mostly used in areas
without GPRS coverage or GPRS usage is too expensive.
GPRS and SMS settings are described in later sections. FM1100 communicates with server
using special data protocol. Data protocol is described in “FMXXXX Protocols” document.
FM1100 can be managed by SMS commands. SMS Command list is described in SMS
COMMAND LIST section
.
Module configuration can be performed over TCP or via SMS.
Configuration parameters and modes are described in “FMXXXX Protocols” document.
5.2
Sleep modes
5.2.1
Sleep mode
FM1100 is able to go to Sleep mode after configurable Sleep timeout. This timeout
(defined period) starts counting when device is in STOP mode. After timeout is reached and all
conditions for sleep mode are met, device goes to sleep mode
.
While in sleep mode, FM1100
turns GPS module off and it is not making new periodic records. Only event records is being
recorded with last known coordinate and sent to AVL server. As a result power usage decreases
allowing saving vehicle battery.
FM1100 can enter sleep mode if
ALL
of these conditions are met:
FM1100 has to be configured to work in Sleep mode and Sleep timeout is reached;
Device must be synchronized time with GPS satellites;
No movement by movement sensor is detected;
Ignition (DIN1) is off;
FM1100 exits sleep mode when if
ONE
of following conditions are true:
Movement by movement sensor is detected;
Ignition (DIN1) is turned on;
5.2.2
Deep Sleep mode
While in deep sleep mode, FM1100 sets GPS receiver to sleep mode and turns off
GSM/GPRS module (it is not possible to wake up device via SMS). Despite records with last
known coordinate are being saved and send to AVL server (GSM/GPRS module is turned on to
send data and after that it is turned off again), power usage is decreased to save vehicle’s
battery. Note, that power saving depends on two configurable parameters: send period and min.
record saving period.
FM1100 can enter deep sleep mode if
ALL
of these conditions are met:
FM1100 has to be configured to work in Deep Sleep mode and Sleep timeout set;
Device must be synchronized time with GPS satellites;
No movement by movement sensor is detected;
Ignition (DIN1) is off;
Min. Record Saving Period (Data Acquisition Mode settings) must be bigger than
Active Data Link Timeout parameter, that FM1100 could close GPRS link.
Send period (Data Acquisition Mode settings) minus Active Data Link Timeout must
be more than 90 sec., that FM1100 could close GPRS link for at least 90 sec.
USB cable is not connected.
Содержание FM1100
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