MEITRACK T622 GPRS Protocol
Copyright © 2017 Meitrack Group All rights reserved. - 35 -
3.43
Setting the Fuel Theft Alert – C49
GPRS Sending
C49,
Time for fuel check
,
Percent of fuel decrease
GPRS Reply
C49,OK
Description
Time for fuel check = 0: function disabled.
Time for fuel check = [1…255]: function enabled. Decimal; unit: minute; default value: 3.
Percent of fuel decrease = 0: function disabled.
Percent of fuel decrease = [1…100]: function enabled. Decimal; default value: 2.
By default, the percent of fuel decrease is 2% within 3 minutes, a fuel theft alert will be
generated (for example:
C49,3,2
).
Note: The percent of fuel decrease must be over two times larger than the percent of
fuel sensor accuracy. For example, if the fuel sensor accuracy is 10 mm and its height is
500 mm, the recommended percent of fuel decrease is 4% (10/500 x 2).
Applicable Model
T622
Example
GPRS Sending
@@c29,353358017784062,C49,3,2*4B\r\n
GPRS Reply
$$c28,353358017784062,C49,ok*5B\r\n
3.44
Customizing AAA Collection Parameters – CCB
GPRS Sending
CCB
GPRS Reply
CCB,
Parameter 1 character string
/
Parameter 1 type
/
Parameter 1 byte
/
Parameter 1
multiple
/…/
Parameter
N
character
string
/
Parameter
N
type
/
Parameter
N
byte
/
Parameter N multiple
Description
1.
Parameter N character string: indicates any characters in this command, excluding
symbol "/". If you want to use symbol "/", replace it with symbol "\". There are the
following two forms of character strings:
Character string without "0x": Used for debugging. The character strings are
not defined and can be queried from historical data only.
Character string with "0x": Used for standard program. There are 4
hexadecimal characters next to "0x". The character strings are defined. For
details, see Chapter 4 "FMS Data Analysis"
2.
Parameter N type:
0: unsigned; little-endian
1: signed; little-endian
2: character string
3.
Parameter N type: value range: 1, 2, 4, & [4…255].
When parameter
N
consists of 1, 2 or 4 bytes, it is hexadecimal values. When
parameter
N
consists of at least 4 bytes, it is ASCII values.
4.
Parameter N multiple: indicates 10
y
. The value of index
y
ranges from 0 to 5. For
example, the value of index
y
is 2, the parameter uploaded increases 100 times.
The value received divided by 100 is the actual value.