GL300 @Tracker Air Interface Protocol
Unique ID
15
IMEI
Device name
20
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
$
3.2.6.
Time Adjustment
The command
AT+GTTMA
is used to adjust local time. If the GPS fixing is successful, the local
time will be automatically adjusted according to the GPS UTC time.
AT+GTTMA=
Example:
AT+GTTMA=gl300,-,3,30,0,20090917203500,,,,,0006$
Parameter
Length (byte)
Range/Format
Default
Password
4 – 6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl300
Sign 1
+|-
+
Hour Offset
<=2
0 - 23
00
Minute Offset
<=2
0 - 59
00
Daylight Saving
1
0|1
0
UTC Time
14
YYYYMMDDHHMMSS
Reserved 0
Reserved 0
Reserved 0
Reserved 0
Serial number
4
0000 – FFFF
Tail character
1
$
$
<
Sign
>: Indicate the positive or negative of the local time offset to UTC
<
Hour Offset
>: UTC offset in hours
<
Minute Offset
>: UTC offset in minutes
<
Daylight Saving
>: Enable/disable daylight saving time.
0: Disable daylight saving
1: Enable daylight saving
<
UTC time
>: The configuration UTC time.
The acknowledgement message of
AT+GTTMA
command:
+ACK:GTTMA,
Example:
+ACK:GTTMA,1A0102,135790246811220,,0007,20100310172830,11F0$
Parameter
Length (byte)
Range/Format
Default
TRACGL300AN001
- 23 -
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