MeiTrack Mobileye T622 User manual

MEITRACK T622 GPRS Protocol
MEITRACK T622 GPRS Protocol
Applicable Model: T622

MEITRACK T622 GPRS Protocol
Copyright © 2017 Meitrack Group All rights reserved. - 2 -
Change History
File Name
MEITRACK T622 GPRS Protocol
Created By
Kyle Lv
Project
T622/T622G
Creation Date
Update Date
2015-12-28
2017-07-10
Subproject
GPRS Protocol
Total Pages
48
Version
V1.2
Confidential
Internal Documentation

MEITRACK T622 GPRS Protocol
Copyright © 2017 Meitrack Group All rights reserved. - 3 -
Contents
1 T622 Command Format............................................................................................................................................. - 5 -
1.1 GPRS Command Format ............................................................................................................................... - 5 -
1.2 Tracker Command Format ............................................................................................................................ - 5 -
1.3 FMS Data Transmittion ............................................................................................................................... - 10 -
1.4 CCC 0x0501 Compression Format............................................................................................................... - 10 -
1.5 Event Code.................................................................................................................................................. - 14 -
2 Command List.......................................................................................................................................................... - 15 -
3 Command Details .................................................................................................................................................... - 17 -
3.1 Real-Time Location Query (GPRS) –A10..................................................................................................... - 17 -
3.2 Setting a Heartbeat Packet Reporting Interval (GPRS) –A11...................................................................... - 17 -
3.3 Tracking by Time Interval (GPRS) –A12 ...................................................................................................... - 18 -
3.4 Setting the Cornering Report (GPRS) –A13 ................................................................................................ - 18 -
3.5 Tracking by Distance –A14 ......................................................................................................................... - 19 -
3.6 Setting the Parking Scheduled Tracking Function (GPRS) –A15 ................................................................. - 19 -
3.7 Enabling the Parking Scheduled Tracking Function (GPRS) –A16............................................................... - 20 -
3.8 Controlling Output 1 Status by RFID/iButton –A17 ................................................................................... - 20 -
3.9 Setting GPRS Parameters –A21 .................................................................................................................. - 20 -
3.10 Setting the DNS Server IP Address –A22.................................................................................................. - 21 -
3.11 Setting the Standby GPRS Server –A23 .................................................................................................... - 21 -
3.12 Reading All Authorized Phone Numbers –A70......................................................................................... - 21 -
3.13 Setting Authorized Phone Numbers –A71 ............................................................................................... - 22 -
3.14 Setting Listen-in Phone Numbers –A72 ................................................................................................... - 22 -
3.15 Setting the Smart Sleep Mode –A73........................................................................................................ - 22 -
3.16 Automatic Event Report –AAA ................................................................................................................. - 23 -
3.17 Deleting a GPRS Event in the Buffer –AFF ................................................................................................ - 23 -
3.18 Setting a Geo-Fence –B05........................................................................................................................ - 24 -
3.19 Deleting a Geo-Fence –B06...................................................................................................................... - 24 -
3.20 Setting the Speeding Alert –B07 .............................................................................................................. - 25 -
3.21 Setting the Towing Alert –B08.................................................................................................................. - 25 -
3.22 Setting the Anti-Theft Function –B21 ...................................................................................................... - 25 -
3.23 Turning off the LED Indicator –B31 .......................................................................................................... - 26 -
3.24 Setting a Log Interval –B34 ...................................................................................................................... - 26 -
3.25 Setting the SMS Time Zone –B35............................................................................................................. - 26 -
3.26 Setting the GPRS Time Zone –B36 ........................................................................................................... - 27 -
3.27 Determining Vehicle Status by ACC Status –B60 ..................................................................................... - 27 -
3.28 Setting SMS Event Characters –B91 ......................................................................................................... - 27 -
3.29 Setting a Photographing Event Flag –B96 ................................................................................................ - 28 -
3.30 Reading a Photographing Event Flag –B97............................................................................................... - 28 -
3.31 Setting Event Authorization –B99 ............................................................................................................ - 28 -
3.32 Controlling Output Status –C01 ............................................................................................................... - 29 -
3.33 Notifying the Tracker of Sending an SMS –C02 ........................................................................................ - 30 -
3.34 Setting a GPRS Event Transmission Mode –C03....................................................................................... - 30 -

MEITRACK T622 GPRS Protocol
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3.35 Registering a Temperature Sensor Number –C40 .................................................................................... - 30 -
3.36 Deleting a Registered Temperature Sensor –C41..................................................................................... - 31 -
3.37 Reading the Temperature Sensor SN and Number –C42 ......................................................................... - 32 -
3.38 Setting a Temperature Value for the High/Low Temperature Alert and Logical Name –C43 ................... - 32 -
3.39 Reading Temperature Sensor Parameters –C44....................................................................................... - 33 -
3.40 Checking Temperature Sensor Parameters –C46 ..................................................................................... - 33 -
3.41 Setting Fuel Parameters –C47 .................................................................................................................. - 34 -
3.42 Reading Fuel Parameters –C48 ................................................................................................................ - 34 -
3.43 Setting the Fuel Theft Alert –C49............................................................................................................. - 35 -
3.44 Customizing AAA Collection Parameters –CCB ........................................................................................ - 35 -
3.45 Setting the Data Compression Format –CCC............................................................................................ - 36 -
3.46 Obtaining a Picture –D00 ......................................................................................................................... - 37 -
3.47 Obtaining the Picture List –D01 ............................................................................................................... - 37 -
3.48 Deleting a Picture –D02 ........................................................................................................................... - 38 -
3.49 Taking Photos on Demand –D03.............................................................................................................. - 38 -
3.50 Authorizing an RFID Card/iButton Key –D10 ........................................................................................... - 38 -
3.51 Authorizing RFID Cards/iButton Keys in Batches –D11 ............................................................................ - 39 -
3.52 Checking RFID/iButton Authorization –D12............................................................................................. - 39 -
3.53 Reading an Authorized RFID/iButton –D13.............................................................................................. - 39 -
3.54 Deleting an Authorized RFID Card/iButton –D14..................................................................................... - 40 -
3.55 Deleting Authorized RFID Cards/iButton Keys in Batches –D15............................................................... - 40 -
3.56 Checking the Checksum of the Authorized RFID/iButton Database –D16 ............................................... - 40 -
3.57 Setting GPS Data Filtering –D71............................................................................................................... - 41 -
3.58 Setting Output Triggering –D72 ............................................................................................................... - 41 -
3.59 Allocating GPRS Cache and GPS LOG Storage Space –D73....................................................................... - 42 -
3.60 Sending the Destination to the Garmin Navigator –D74.......................................................................... - 42 -
3.61 Sending Messages from the Garmin Navigator –D75 .............................................................................. - 42 -
3.62 Sending Messages to the Garmin Navigator –D76................................................................................... - 43 -
3.63 Obtaining Garmin Navigator Info –D77.................................................................................................... - 43 -
3.64 Setting Harsh Acceleration and Braking Parameters –D78 ...................................................................... - 44 -
3.65 Reading Device's Firmware Version and SN –E91 .................................................................................... - 44 -
3.66 Restarting the GSM Module –F01............................................................................................................ - 45 -
3.67 Restarting the GPS Module –F02 ............................................................................................................. - 45 -
3.68 Setting the Mileage and Run Time –F08 .................................................................................................. - 45 -
3.69 Deleting SMS/GPRS Cache Data –F09 ...................................................................................................... - 46 -
3.70 Restoring Initial Settings –F11.................................................................................................................. - 46 -
4 FMS Data Analysis.................................................................................................................................................... - 47 -

MEITRACK T622 GPRS Protocol
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1T622 Command Format
1.1 GPRS Command Format
The GPRS command format is as follows:
GPRS command sent from
the server to the tracker
@@<Data identifier><Data length>,<IMEI>,<Parameter table No.><Command
type>,<Command><*Checksum>\r\n
GPRS command sent from
the tracker to the server
$$<Data identifier><Data length>,<IMEI>,<Event code>,<Command/Error
code><*Checksum>\r\n
Command description
@@: Indicates the packet header sent from the server to the tracker; contains 2 characters.
Data identifier: Contains 1 byte; hexadecimal; its value ranges from 0x41 to 0x7A. The data identifier in
the reply command must be the same as that of the sending command. Otherwise, the command fails.
A comma (,) is used to separate data characters. The character type is the American Standard Code for
Information Interchange (ASCII). (Hexadecimal is represented as 0x2C.)
Data length: Indicates the length of characters from the first comma (,) to \r\n. Decimal.
Example: $$<Data identifier><Data length>,<IMEI>,<Command type>,<Command><*Checksum>\r\n
IMEI: Indicates the tracker's IMEI number.
Parameter table No.: 0or null: All parameter tables need to be modified; 1: The basic parameter table
needs to be modified; 2: Roaming parameter table 1 needs to be modified.
Command type: Consists of letters and digits. For detail, see Chapter 3 "Command Details."
Command: no more than 1,024 bytes.
*: Separates commands from checksums. Checksum: hexadecimal; 2 bytes; indicates the sum of all data
packets (excluding the checksum and ending mark).
Example: $$<Data identifier><Data length>,<IMEI>,<Command type>,<Command><*Checksum>\r\n
\r\n: 2 bytes. The parameter is an ending character. The type is ASCII. (Hexadecimal value: 0x0d 0x0a)
$$: Indicates the packet header sent from the tracker to the server; 2 bytes; hexadecimal: 0x24 0x24.
Multiple commands are separated by a comma (,). If commands are null, keep commas (,).
Note: If the tracker connects to a peripheral compatiable with FMS protocol, the data will be transmitted in CCC
0x0501 format; else data will be transmitted in AAA format.
1.2 Tracker Command Format
Data has two formats: AAA and CCC.
Data will be transmitted in AAA format when the tracker does not connect to a peripheral compatible with FMS
protocol, which is as follows:
$$<Data identifier><Data length>,<IMEI>,AAA,<Event code><Latitude><Longitude><Date and time><Positioning
status><Number of satellites><GSM signal strength><Speed><Direction><Horizontal dilution of precision
(HDOP)><Altitude><Mileage><Total time><Base station info><I/O port status><Analog input value><Assisted
event info>,<Customized data>,<Extended protocol version 3>,<Fuel percentage>,<Temperature sensor 1
value|Temperature sensor 2 value|……Temperature sensor n value>,<Max acceleration value>,<Max deceleration
value>,<LLS fuel sensor 1+LLS fuel sensor temperature+LLS fuel sensor value N+LLS fuel sensor frequency|……LLS
fuel sensor n+LLS fuel sensor temperature+LLS fuel sensor value N+LLS fuel sensor frequency><*Checksum>\r\n

MEITRACK T622 GPRS Protocol
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Descriptions about AAA format commands are as follows:
Parameter
Description
Example
Event code
Decimal
For details, see section 1.5 "Event Code."
1
Event code 1: SOS Pressed
Latitude
(-)yy.dddddd
Unit: degree
Decimal
When a minus (-) exists, the tracker is in the
southern hemisphere. When no minus (-) exists, the
tracker is in the northern hemisphere.
yy indicates the degree.
dddddd indicates the decimal part.
22.756325 (indicates
22.756325°N )
-23.256438 (indicates
23.256438°S )
Longitude
(-)xxx.dddddd
Unit: degree
Decimal
When a minus (-) exists, the tracker is in the western
hemisphere. When no minus (-) exists, the tracker is
in the eastern hemisphere.
xxx indicates the degree.
dddddd indicates the decimal part.
114.752146 (indicates
114.752146°E )
-114.821453 (indicates
114.821453°W )
Date and time
yymmddHHMMSS
yy indicates year.
mm indicates month.
dd indicates day.
HH indicates hour.
MM indicates minute.
SS indicates second.
Decimal
091221102631
Indicates 21 December
2009, 10:26:31 am.
Positioning status
Indicates the GPS signal status.
A= Valid
V= Invalid
A
The GPS is valid.
Number of satellites
Indicates the number of received GPS satellites.
Decimal
5
Five GPS satellites are
received.
GSM signal strength
Value: 0–31
Decimal
12
The signal strength is 12.
Speed
Decimal
Unit: km/h
Value range: 0–999
58
The speed is 58 km/h.
Direction
Indicates the driving direction. The unit is degree.
When the value is 0, the direction is due north. The
value ranges from 0 to 359.
Decimal
45: indicates that the
location is at northeast.
90: indicates that the
location is at due east.

MEITRACK T622 GPRS Protocol
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HDOP
Decimal
The value ranges from 0.5 to 99.9. The smaller the
value is, the more the accuracy is.
0.5–1.0: Perfect
2–3: Wonderful
4–6: Good
7–8: Medium
9–20: Below average
21–99.9: Poor
5.0
The HDOP is 5.0.
Altitude
Decimal
Unit: meter
Value range: -9999 to 99999
118
The altitude is 118m.
Mileage
Indicates the total mileage.
Decimal
Unit: meter
Value range: 0–4294967295. If the value exceeds the
maximum value, it will be automatically cleared.
564870
The mileage is 564870m.
Run time
Indicates the total time.
Decimal
Unit: second
Value range: 0–4294967295. If the value exceeds the
maximum value, it will be automatically cleared.
2546321
The run time is 2546321
seconds.
Base station info
The base station information includes:
MCC|MNC|LAC|CI
MCC: indicates Mobile Country Code; decimal.
MNC: indicates Mobile Network Code; decimal.
LAC: indicates Location Area Code; contains 4
hexadecimal characters.
CI: indicates the cell ID; contains 4 hexadecimal
characters.
2G module:
460|0|E166|A08B
I/O port status
Contains 4 hexadecimal characters.
Status values of eight input ports and eight output
ports:
Bits 0–7 correspond to status of output ports 1–8.
Bits 8–15 correspond to status of input ports 1–8.
0421
= 0000 0100 0010 0001
=b15---------------b0
Analog input value
Hexadecimal
Eight analog input values are separated by "|".
AD1|AD2|AD3|Battery analog|External power
analog|AD6|AD7|AD8
Unit: V
Note: Analog input values in an SMS report are
empty.
Voltage formula of analog AD1–AD3:
0123|0456|0235|1234|03
24|0654|1456|0222

MEITRACK T622 GPRS Protocol
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T622: AD1/100
Voltage formula of battery analog (AD4):
T622: AD4/100
Voltage formula of external power supply (AD5):
T622: AD5/100
AD6–AD8: Reserved. (Note: Unnecessary AD values
at the end of this parameter can be removed while
editing. For example, if AD6, AD7, and AD8 are not in
use, you can just send the first five AD values:
0123|0456|0235|1234|0324.)
Assisted
event
info
iButton ID
(Event 37)
Indicates iButton key's ID number.
Contains 8 hexadecimal characters.
Only available by GPRS event code 37.
42770680
Picture name
(Event 39)
Only available by GPRS event code 39.
0918101221_C2E03
0918101221: The photo
was taken at 18 September,
10:12:21 a.m.
C2: The camera 2 was used.
E03: indicates event 3.
Geo-fence
number
(Event 20 &
21)
Decimal
Only available by GPRS event code 20 or 21.
2
Indicates geo-fence 2.
Temperature
sensor No.
(Event 50 &
51)
The temperature sensor No. is set by command C40.
Contains 2 hexadecimal characters.
08
Indicates temperature
sensor 8.
Mobileye
alert (Event
93)
Hexadecimal
4 bytes
0: No alert is generated.
1: An alert is generated.
Bit 0: forward collision warning
Bit 1: urban forward collision warning
Bit 2: pedestrian collision warning
Bit 3: left lane departure warning
Bit 4: right lane departure warning
Bit 5: headway monitoring & warning
Bit 6: speed limit indicator
00000001
A forward collision warning
is generarated.
System flag
System flag is only included in event 35 "Time
Interval Tracking".
Contains 4 bytes; hexadecimal (example: FEDCBA00)
Descriptions about bits 0–31 are as follows:
Bit 0: Whether to change the EEP2 parameter. When
the value is 1, the EEP2 parameter is changed.
00000001
The EEP2 parameter is
modified.

MEITRACK T622 GPRS Protocol
Copyright © 2017 Meitrack Group All rights reserved. - 9 -
Bits 1–7: reserved.
Bit 8: Whether to connect the FMS. When the value
is 1, the FMS is connected.
Bit 9: Whether to enable the FMS function. When
the value is 1, the function is enabled.
Bits 10–31: reserved.
Customized data
Reserved
A separator still exists.
Extended protocol
version
Decimal
1–49: Used for all common Meitrack protocols.
3
The extended protocol
version is 3.0.
Fuel percentage
Contains 4 hexadecimal characters.
When the fuel sensor type is 0, the sensor is not
connected and the value is empty.
0E2E
The fuel percentage is
36.30%.
Temperature sensor No. +
Temperature value
Contains 6 hexadecimal characters.
The first two characters are the temperature sensor
No.
The last four characters are the temperature value
(actual temperature x 100; including the integer and
decimal parts; -327.67°C to +327.67°C).
011A09|021A15|06FB2E
There are 3 temperature
sensors.
Temperature sensor 1:
66.65°C
Temperature sensor 2:
66.77°C
Temperature sensor 6:
-12.34°C
Max acceleration value
Decimal
Unit: mg
Indicates the maximum acceleration value at the
specific time interval of two pieces of AAA data.
30
The maximum acceleration
value is 30mg.
Max deceleration value
Decimal
Unit: mg
Indicates the maximum deceleration value at the
specific time interval of two pieces of AAA data.
18
The maximum deceleration
value 18mg.
LLS fuel sensor No.+LLS
fuel sensor
temperature+LLS fuel
sensor value N+LLS fuel
sensor frequency
Contains 12 hexadecimal characters.
The first two characters indicate the LLS fuel sensor
No.
The ninth and eighth characters indicate the LLS fuel
sensor temperature (-127°C to +127°C ).
The fourth to seventh characters indicate the LLS fuel
sensor value N(0000–FFFF).
The lowest four characters indicate the LLS fuel
sensor frequency (0000–FFFF).
021A037908A6|051E03A80
3FA
There are 2 LLS fuel
sensors.
LLS fuel sensor 2:
Temperature: 26°C
Value N: 889
(hexadecimal: 0379)
Frequency: 2214
(hexadecimal: 08A6)
LLS fuel sensor 5:
Temperature: 30°C

MEITRACK T622 GPRS Protocol
Copyright © 2017 Meitrack Group All rights reserved. - 10 -
Value N: 936
(hexadecimal: 03A8)
Frequency: 1018
(hexadecimal: 03FA)
Data will be transmitted in CCC 0x0501 format when the tracker connects to a peripheral compatiable with FMS
protocol, which is as follows:
$$<Data identifier><Data length>,<IMEI>,CCC,<Protocol version><Longitude and latitude packet
length><Number of remaining cache><Longitude and latitude packet 1>……<Longitude and latitude packet
n><*Checksum>\r\n
1.3 FMS Data Transmittion
1. Data will be transmitted in AAA format when the tracker does not connect to a peripheral compatible with
FMS protocol.
2. Among event code 35 data of AAA format, when system flag bit 8 is 1(a peripheral supporting FMS protocol is
connected) and bit 9 is 1(FMS functions supported), upon reception, the platform must send a CCB command
to the tracker. Then the tracker starts to use CCC 0x0501 compression format to upload data. For details
about the CCB command, see section 3.44 "Customizing AAA Collection Parameters –CCB."
3. At all times, upon reception of CCB command, the platform will reply CCB,OK.
1.4 CCC 0x0501 Compression Format
Positioning data is uploaded in compession format (Nrecords per a packet). The command format is as follows:
<Event code><Latitude,Longitude><Date and time><Positioning status><Number of satellites><GSM signal
strength><Speed><Direction><HDOP><Altitude><Mileage><Total time><Base station info><I/O port
status><Analog input value><Assisted event info><Fuel percentage><Temperature sensor 1......Temperature sensor
8><Max acceleration value><Max deceleration value><LLS fuel sensor 1+LLS fuel sensor temperature+LLS fuel
sensor value N+LLS fuel sensor frequency……LLS fuel sensor 8+LLS fuel sensor temperature+LLS fuel sensor value
N+LLS fuel sensor frequency><FMS data packets>
Note:
1. Symbols "<" ">", and "+" will not be present in actual data, only for documentation purpose only.
2. All data with multiple bytes is in little-endian format.
3. GPRS data length variety; used in conjunction with CCB command.
Descriptions about GPRS packets from the tracker are as follows:
Parameter
Description
Example
Byte
Event code
8-bit unsigned
For details, see section 1.5 "Event
Code"
01
That is, event 1
1
Latitude
32-bit signed
Accurate to 6 decimal places
E5 3B 5B 01 = 22756325
(indicates 22.756325°N)
8A 229D FE = -23256438
(indicates 23.256438°S)
4
Longitude
32-bit signed
Accurate to 6 decimal places
92 FA D6 06 = 114752146
(indicates 114.752146°E)
4

MEITRACK T622 GPRS Protocol
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B3F627F9 = -114821453
(indicates 114.821453°W)
Date and time
32-bit unsigned
Unit: second
Start time: 1 January 2000
6E763702
Indicates 6 March 2001,
10:20:30 am
4
Positioning status
8-bit unsigned
01 = Valid
00 = Invalid
01
The GPS is valid.
1
Number of satellites
8-bit unsigned
Indicates the number of received GPS
satellites.
07
Seven GPS satellites are
received.
1
GSM signal strength
8-bit unsigned
Indicates the GSM signal strength;
value: 0–31
11
The signal strength is 17.
1
Speed
16-bit unsigned
Unit: km/h
3A00
The speed is 58 km/h.
2
Direction
16-bit unsigned
Unit: degree
When the value is 0, the direction is
due north.
Value range: 0–359
2D 00 = 45 (indicates that
the location is at
northeast.)
5A 00 = 90 (indicates that
the location is at due
east.)
2
HDOP
x10
16-bit unsigned
Value range: 5–999
Unit: 1/10
4B 00 = 75
The HDOP is 7.5.
2
Altitude
16-bit signed
Unit: meter
76 00
The altitude is 118m.
2
Mileage
32-bit unsigned
Indicates the total mileage.
Unit: meter
66 1F B8 F2
The mileage is
4072152934m.
4
Run time
32-bit unsigned
Indicates the total time.
Unit: second
66 1F B8 F2
The run time is
4072152934 seconds.
4
Base
station
info
MCC
16-bit unsigned
Indicates Mobile Country Code.
CC 01
(MCC: 01CC)
2
MNC
16-bit unsigned
Indicates Mobile Network Code.
00 00
(MNC: 0000)
2
LAC
16-bit unsigned
Indicates Location Area Code.
66E1
(LAC: E166)
2
CELL ID
32-bit unsigned
Indicates the cell ID.
8B A0 00 10
(CELL ID: 1000A08B)
4
Output status
8-bit unsigned
Status values of eight output ports
21
(MSB:0010 0001:LSB)
1

MEITRACK T622 GPRS Protocol
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Bits 0–7 correspond to status of output
ports 1–8.
Output ports 1 and 6 are
high level.
Input status
8-bit unsigned
Status values of eight input ports
Bits 0–7 correspond to status of input
ports 1–8.
04
(MSB:0000 0100:LSB)
Input port 3 is high level.
1
Analog
input
value
AD1
16-bit unsigned
Analog 1<AD1>
0000
DEC(0)
2
AD2
16-bit unsigned
Analog 2<AD2>
0000
DEC(0)
2
AD3
16-bit unsigned
Analog 3<AD3>
0000
DEC(0)
2
AD4
16-bit unsigned
Battery analog<AD4>
56 14
DEC(5206)
2
AD5
16-bit unsigned
External power analog<AD5>
22 02
DEC(546)
2
Assisted
event
info
Geo-fence
number
2 of 32-bit unsigned
Only available by GPRS event code 20
or 21.
02 00 00 00 00 00 00 00
Indicates geo-fence 2.
4x2
RFID
2 of 32-bit unsigned
Indicates the IC card identity code.
Only available by GPRS event code 37.
D7 9D D1 0000 00 00 00
The RFID number is
13737431.
Vehicle theft
trigger source
2 of 32-bit unsigned
Only available by GPRS event code 58.
17 00 00 00 00 00 00 00
A vehicle theft alert is
generated because the
external power is cut off.
System flag
System flag is only included in event 35
"Time Interval Tracking".
2 of 32-bit unsigned
Only available by GPRS event code 35.
Bit 0: Whether to change the EEP2
parameter. When the value is 1, the
EEP2 parameter is changed.
Bits 1–7: reserved.
Bit 8: Whether to connect the FMS.
When the value is 1, the FMS is
connected.
Bit 9: Whether to enable the FMS
function. When the value is 1, the
function is enabled.
Bits 10–31: reserved.
01 00 00 00 00 00 00 00
The parameter is
modified.
Temperature
sensor No.
2 of 32-bit unsigned
Only available by GPRS event code 50
07 00 00 00 00 00 00 00
Indicates temperature

MEITRACK T622 GPRS Protocol
Copyright © 2017 Meitrack Group All rights reserved. - 13 -
or 51.
sensor 7.
Picture name
2 of 32-bit unsigned
Only available by GPRS event code 39.
CB 0F 23 1901 1E 0C 00
(indicates the date and
time, that is,
130513024323.)
0x19230FCB 0x000C1E01
(indicates C1E01)
The picture name is
130513024323_C1E01.jp
g.
Fuel percentage
16-bit unsigned
Indicates the fuel percentage.
1E 24
The fuel percentage is
92.46%.
2
Temperature sensor
8 of 32-bit unsigned
Up to 8 temperature sensors are
supported. Each temperature sensor
contains 4 bytes.
Bits 0–7: indicates the sensor number.
00: The sensor is not registered.
0xFF: No sensor is installed.
Other values: Valid sensor
number.
Bits 8–15: Reserved. Value: 0.
Bits 16–23: indicates the interger part
of a temperature value.
Bits 24–31: indicates the decimal part
of a temperature value.
01001234020012350300
1233FF000000FF0000000
0001238FF000000040012
40
Data descriptions are as
follows:
Temperature sensor
number: 01;
temperature: 18.52°C.
Temperaure sensor
number: 02;
temperature: 18.53°C.
Temperature sensor
number: 03;
temperature: 18.51°C.
The temperature sensor
is not numbered. The
temperature is 18.56°C.
Temperature sensor
number: 04;
temperature: 18.64°C.
The remaining three
sensors are not
connected or detected.
4x8
Max acceleration value
16-bit unsigned
01 00
The maximum
acceleration value is 1mg.
2
Max deceleration value
16-bit unsigned
02 00
The maximum
deceleration value is
2mg.
2

MEITRACK T622 GPRS Protocol
Copyright © 2017 Meitrack Group All rights reserved. - 14 -
LLS fuel sensor No.+LLS
fuel sensor
temperature+LLS fuel
sensor value N+LLS fuel
sensor frequency
8-bit unsigned + 8 of 18-bit unsigned
Bits 0–7: corresponding LLS fuel
sensors 1–8 data
Bits 8–15: LLS sensor number
Bits 16–23: LLS fuel sensor
temperature; signed
Bits 24–31: low 8 bits of LLS fuel sensor
value N
Bits 32–39: high 8 bits of LLS fuel
sensor value N
Bits 40–47: low 8 bits of LLS fuel sensor
frequency
Bits 48–55: high 8 bits of LLS fuel
sensor frequency
7f0105020103050215030
20406032503030404
04340203040505351500
2000
063925003600
07453100520000000000
0000
7f: LLS fuel sensors 1–7
output data. LLS fuel
sensor 8 does not output
data.
01: indicates the LLS fuel
sensor number.
05: The temperature of
LLS fuel sensor 01 is 5°C.
0201: Value Nis 258.
0305: The frequency is
1283 Hz.
49
FMS data packets
For details, see section 3.44
"Customizing AAA Collection
Parameters –CCB."
Length of
CCB
parameters
1.5 Event Code
Event Code
Event
Default SMS Header (At Most 16 Bytes)
1
SOS Pressed
SOS
2
Input 2 Active
Door Open
3
Input 3 Active
Ignition On
9
Input 1 Inactive
In1 Inactive
10
Input 2 Inactive
Door Close
11
Input 3 Inactive
Ignition Off
17
Low Battery
Low Battery
18
Low External Battery
Low Ext-Battery
19
Speeding
Speeding
20
Enter Geo-fence
Enter Fence N (N means the number of the fence)
21
Exit Geo-fence
Exit Fence N (N means the number of the fence)
22
External Battery On
Ext-Battery On
23
External Battery Cut
Ext-Battery Cut
24
GPS Signal Lost
GPS Signal Lost
25
GPS Signal Recovery
GPS Recovery
26
Enter Sleep
Enter Sleep
27
Exit Sleep
Exit Sleep

MEITRACK T622 GPRS Protocol
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28
GPS Antenna Cut
GPS Antenna Cut
29
Device Reboot
Power On
31
Heartbeat
/
32
Cornering
Cornering
33
Track By Distance
Distance
34
Reply Current (Passive)
Now
35
Track By Time Interval
Interval
36
Tow
Tow
39
Photo
(only for GPRS)
40
Power Off
Power Off
41
Stop Moving
Stop moving
42
Start Moving
Start Moving
50
Temperature High
Temp High
51
Temperature Low
Temp Low
52
Full Fuel
Full Fuel
53
Low Fuel
Low Fuel
54
Fuel Theft
Fuel Theft
65
Press Input 1 (SOS) to Call
/
66
Press Input 2 to Call
/
67
Press Input 3 to Call
/
70
Reject Incoming Call
/
93
Mobileye Alert
/
129
Harsh Braking
Harsh Braking
130
Harsh Acceleration
Fast Accelerate
2Command List
Command
Command Description
A10
Real-Time Location Query (GPRS)
A11
Setting a Heartbeat Packet Reporting Interval (GPRS)
A12
Tracking by Time Interval (GPRS)
A13
Setting the Cornering Report (GPRS)
A14
Tracking by Distance
A15
Setting the Parking Scheduled Tracking Function (GPRS)
A16
Enabling the Parking Scheduled Tracking Function (GPRS)
A17
Controlling Output 1 Status by RFID/iButton
A21
Setting GPRS Parameters
A22
Setting the DNS Server IP Address
A23
Setting the Standby GPRS Server
A70
Reading All Authorized Phone Numbers
A71
Setting Authorized Phone Numbers

MEITRACK T622 GPRS Protocol
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A72
Setting Listen-in Phone Numbers
A73
Setting the Smart Sleep Mode
AAA
Automatic Event Report
AFF
Deleting a GPRS Event in the Buffer
B05
Setting a Geo-Fence
B06
Deleting a Geo-Fence
B07
Setting the Speeding Alert
B08
Setting the Towing Alert
B21
Setting the Anti-Theft Function
B31
Turning off the LED Indicator
B34
Setting a Log Interval
B35
Setting the SMS Time Zone
B36
Setting the GPRS Time Zone
B60
Determining Vehicle Status by ACC Status
B91
Setting SMS Event Characters
B96
Setting a Photographing Event Flag
B97
Reading a Photographing Event Flag
B99
Setting Event Authorization
C01
Output Control
C02
Notifying the Tracker of Sending an SMS
C03
Setting a GPRS Event Transmission Mode
C40
Registering a Temperature Sensor Number
C41
Deleting a Registered Temperature Sensor
C42
Reading the Temperature Sensor SN and Number
C43
Setting a Temperature Value for the High/Low Temperature Alert and Logical
Name
C44
Reading Temperature Sensor Parameters
C46
Checking Temperature Sensor Parameters
C47
Setting Fuel Parameters
C48
Reading Fuel Parameters
C49
Setting the Fuel Theft Alert
CCB
Customizing AAA Collection Parameters
CCC
Setting the Data Compression Format
D00
Obtaining a Picture
D01
Obtaining the Picture List
D02
Deleting a Picture
D03
Taking Photos on Demand
D10
Authorizing an RFID Card/iButton Key
D11
Authorizing RFID Cards/iButton Keys in Batches
D12
Checking RFID/iButton Authorization
D13
Reading an Authorized RFID/iButton
D14
Deleting an Authorized RFID Card/iButton

MEITRACK T622 GPRS Protocol
Copyright © 2017 Meitrack Group All rights reserved. - 17 -
D15
Deleting Authorized RFID Cards/iButton Keys in Batches
D16
Checking the Checksum of the Authorized RFID/iButton Database
D71
Setting GPS Data Filtering
D72
Setting Output Triggering
D73
Allocating GPRS Cache and GPS LOG Storage Space
D74
Sending the Destination to the Garmin Navigator
D75
Sending Messages from the Garmin Navigator
D76
Sending Messages to the Garmin Navigator
D77
Obtaining Garmin Navigator Info
D78
Setting Harsh Acceleration and Braking Parameters
E91
Reading Device's Firmware Version and SN
F01
Restarting the GSM Module
F02
Restarting the GPS Module
F08
Setting the Mileage and Run Time
F09
Deleting SMS/GPRS Cache Data
F11
Restoring Initial Settings
3Command Details
3.1 Real-Time Location Query (GPRS) –A10
GPRS Sending
A10
GPRS Reply
AAA,34,(-)Latitude,(-)Longitude,Date and time,Positioning status,Number of
satellites,GSM signal strength,Speed,Direction,HDOP,Altitude,Mileage,Run time,Base
station info,I/O port status,Analog input value
Description
34: indicates the GPRS command event code.
Applicable Model
T622
Example
GPRS Sending
@@Q25,353358017784062,A10*6A\r\n
GPRS Reply
$$Q128,353358017784062,AAA,34,22.543176,114.078448,100313093738,A,5,22,2,205
,5,-14,0,60,0|0|10133|4110,0000,149|153|173|2707|914,*91\r\n
3.2 Setting a Heartbeat Packet Reporting Interval (GPRS) –A11
GPRS Sending
A11,Interval
GPRS Reply
A11,OK
Description
The heartbeat packet function is used to keep the Transmission Control Protocol (TCP)
connection open when the interval of scheduled GPRS reporting is long.
Interval = 0: function disabled (default).
Interval = [1…65535]: function enabled. Unit: minute.
The heartbeat function is available only in conjunction with deep sleep mode. When the
device enters deep sleep mode, a heartbeat packet will be sent at the specified interval.

MEITRACK T622 GPRS Protocol
Copyright © 2017 Meitrack Group All rights reserved. - 18 -
A heartbeat packet is to confirm the device is online, and positioning data is invalid.
Applicable Model
T622
Example
GPRS Sending
@@S28,353358017784062,A11,10*FD\r\n
GPRS Reply
$$S28,353358017784062,A11,OK*FE\r\n
After the above command is run successfully, the tracker will send the following GPRS
heartbeat packet to the platform every 10 minutes in sleep mode:
$$a131,353358017784062,AAA,31,22.913458,114.083183,080229123628,V,9,23,21,83,
1,18,1350,127,0|0|10133|4110,0000,169|181|184|2714|919,*60
3.3 Tracking by Time Interval (GPRS) –A12
GPRS Sending
A12,Interval
GPRS Reply
A12,OK
Description
Unit: x10 seconds
Interval = 0: function disabled.
The maximum time interval is 65535 x 10 seconds.
6 x 10 seconds are recommended.
Applicable Model
T622
Example
GPRS Sending
@@V27,353358017784062,A12,6*D5\r\n
GPRS Reply
$$V28,353358017784062,A12,OK*02\r\n
After the above command is run successfully, the tracker will send the following GPRS
data packet to the platform every 1 minute:
$$W129,353358017784062,AAA,35,22.540113,114.076141,100313094354,A,5,22,1,17
4,4,129,0,435,0|0|10133|4110,0000,166|224|193|2704|916,*BE\r\n
3.4 Setting the Cornering Report (GPRS) –A13
GPRS Sending
A13,Angle
GPRS Reply
A13,OK
Description
When the driving angle exceeds the preset value, the tracker will send a GPRS data
packet with location information to the server, which ensures a smoother route on the
platform.
Angle = 0: function disabled (default).
Angle = [1…359]: function enabled. Recommended value: 30.
Applicable Model
T622
Example
GPRS Sending
@@X29,353358017784062,A13,120*37\r\n
GPRS Reply
$$X28,353358017784062,A13,OK*05\r\n
After the above command is run successfully, if the cornering angle is greater than 120
degree, the tracker will send the following GPRS data pakcet to the server:
$$Y129,353358017784062,AAA,32,22.540968,114.077455,100313094534,A,4,22,1,166,

MEITRACK T622 GPRS Protocol
Copyright © 2017 Meitrack Group All rights reserved. - 19 -
3,175,0,534,0|0|10133|4110,0000,141|138|159|2691|904,*D9\r\n
3.5 Tracking by Distance –A14
GPRS Sending
A14,Distance
GPRS Reply
A14,OK
Description
Distance = 0: function disabled (default).
Distance = [1…65535]: function enabled. Unit: meter.
Note: When both the GPRS time interval and distance tracking functions are enabled,
the "first reach first report" rule will be applied. For example, set the time interval to 6 x
10 seconds and distance to 200 meters. If the road is clear, a distance data packet will be
reported first; if there is heavy traffic on the road, a time interval data packet will be
reported first. Then both the time interval and distance counters will be reset to 0.
300 is recommended.
Applicable Model
T622
Example
GPRS Sending
@@D30,353358017784062,A14,1000*4A\r\n
GPRS Reply
$$D28,353358017784062,A14,OK*F2\r\n
After the above command is run successfully, if the driving distance reaches 1000m, the
tracker will send a data packet to the server.
$$D131,353358017784062,AAA,33,22.547271,114.047405,080310080929,A,8,21,13,89
,1,12,8525,561,0|0|10133|4110,0000,163|185|186|2712|939,*31\r\n
3.6 Setting the Parking Scheduled Tracking Function (GPRS) –A15
GPRS Sending
A15,Interval
GPRS Reply
A15,OK
Description
The function is available for vehicle trackers only. With the function, the number of
GPRS messages is reduced, and thus GPRS traffic is saved.
After the A15 function is set, the A16 function is automatically enabled. For details
about engine status, see section 3.7 "Enabling the Parking Scheduled Tracking Function
(GPRS) –A16."
Interval unit: x10 seconds
Interval = 0: function disabled.
The maximum interval is 65535 x 10 seconds.
Note: If data needs to be sent at the specified interval after the vehicle starts or stops,
the function needs to work with the A12 function.
Applicable Model
T622
Example
GPRS Sending
@@E27,353358017784062,A15,6*C7\r\n
GPRS Reply
$$E28,353358017784062,A15,OK*F4\r\n

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3.7 Enabling the Parking Scheduled Tracking Function (GPRS) –A16
GPRS Sending
A16,Status
GPRS Reply
A16,OK
Description
The function is available for vehicle trackers only. The first positive input port (high
level) of a vehicle tracker must connect to engine detection. Otherwise, the
function is unavailable.
When the activation status is 1, the parking scheduled tracking function is enabled;
when the activation status is 0, the function is disabled. GPRS data is sent at the
following interval:
Interval of the A12 function when the engine is on
Interval of the A15 function when the engine is off
Applicable Model
T622
Example
GPRS Sending
@@F27,353358017784062,A16,0*C3\r\n
GPRS Reply
$$F28,353358017784062,A16,OK*F6\r\n
3.8 Controlling Output 1 Status by RFID/iButton –A17
GPRS Sending
A17,X
GPRS Reply
A17,OK
Description
X = 1: function enabled. Before using the function, you must ensure: 1. ACC detection is
connected to input 3; 2. A RFID card has been authorized.
X = 0: function disabled (default).
For example: After swiping the authorized RFID card, you must start the engine within 1
minute. If the time exceeds 1 minute, you need to swipe the card again. After the
engine is started, input 3 has been detecting the ACC status. If ACC ON is detected (that
is, input 3 is the high level), output 1 will not generate data. If ACC OFF is detected, after
1 minute, swipe the authorized RFID card to start the engine as required.
For details about how to authorize a RFID, see commands D10–D15.
Applicable Model
T622
Example
GPRS Sending
@@T27,353358017784062,A17,1*D3\r\n
GPRS Reply
$$T28,353358017784062,A17,OK*05\r\n
3.9 Setting GPRS Parameters –A21
GPRS Sending
A21,Connection mode,IP address,Port,APN,APN user name,APN password
GPRS Reply
A21,OK
Description
Connection mode = 0: function disabled.
Connection mode = 1: function enabled; use TCP/IP reporting mode.
Connection mode = 2: function enabled; use UDP reporting mode.
IP address: IP address or domain name. A maximum of 32 bytes are supported.