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GMT00 @Track Air Interface Protocol

TRACGMT100AN001 – 58 –

3.2.22. Ignition Time Counter

The command AT+GTHMC is used to measure time of use with each actuation of the ignition on.

To use this command, the ignition signal must be connected to the device. When the device sends

+RESP:GTFRI and +RESP:GTIGN and +RESP:GTIGF, <Ignition Time Count> will be sent

in these reports.

 AT+GTHMC=

Example:

AT+GTHMC=gmt100,1,12345:12:34,,,,,,,,,0015$

Parameter

Length(byte)

Range/Format

Default

Password

4 – 6

'0' – '9' 'a' – 'z' 'A' – 'Z'

gmt100

Ignition Time Counter

Enable

0|1

Initial Ignition Time Count

00000:00:00-99999:00:00

00000:00:00

Reserved

Serial Number

0000 – FFFF

Tail Character

 <Ignition Time Counter Enable>: Enable or disable ignition time counter function. If ignition

time counter function is enabled, ignition time count will be increased when the device is in

ignition.

 0: Disable ignition time counter function

 1: Enable ignition time counter function

 <Initial Ignition Time Count>: Initial ignition time count. It is formatted with 5 hour digits

and 2 minute digits and 2 second digits and ranges from 00000:00:00– 99999:00:00. When

engine is on at the first time, <Ignition Time Count> which report in +RESP:GTFRI

/+RESP:GTIGN/+RESP:GTIGF will be increased based on this value.

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