MEITRACK T400G TPMS Scheme User Guide
Copyright © 2019 Meitrack Group All rights reserved. - 42 -
Bit 2: indicates temperature status. 1: high temperature; 0: normal temperature.
Bits 1–0: indicates the alert status. 00: no alert; 01: fast air leak alert; 10: slow air
leak alert; 11: tire inflation alert.
Note: At most 64 tire pressure sensors are supported. In other words, the maximum
value of
n
is 64.
Example
GPRS Sending
@@Q25,863835020877432,DA1*82\r\n
GPRS Reply
$$Q90,863835020877432,DA1,0208001000000000000007110100000000000006100100
0000000000050101000000000000040001000000000000031100000000000000010185A
000000BC*46\r\n
9.2.3
Obtaining Data of a Tire Pressure Sensor – DA2 (GPRS)
GPRS Sending
DA2,
Location
GPRS Reply
DA2,<
Location
><
ID
><
Tire pressure
><
Temperature
><
Status
>
Description
Location: indicates the installation location of a tire pressure sensor; 1 byte;
unsigned; hexadecimal.
Bits 7–5: indicate the vehicle's head part or trailer. 000(B): vehicle's head part;
001(B): trailer 1; 010(B): trailer 2; 011(B): trailer 3; 100(B): trailer 4.
Bits 4–0: indicate the tire number. For example, 00001(B), indicating the first tire.
ID: indicates a tire pressure sensor's ID number; 4 bytes; unsigned; hexadecimal.
Tire pressure: 2 bytes; unsigned; hexadecimal; formula: obtained value x 0.025;
unit: bar.
Temperature: indicates the tire temperature; 1 byte; unsigned; hexadecimal;
formula: obtained value – 50; unit: °C.
Status: indicates the tire status; 1 byte; unsigned; hexadecimal.
Bit 7: indicates the battery voltage status of the transmitter. 0: normal voltage; 1:
low voltage.
Bit 6: Whether to receive data from the transmitter. When you do not receive data
from the transmitter within 15 minutes, the parameter value will be reset to 1.
Bit 5: reserved.
Bit 4: When the value is 1, the air pressure is high.
Bit 3: When the value is 1, the air pressure is low.
Bit 2: indicates temperature status. 1: high temperature; 0: normal temperature.
Bits 1–0: indicates the alert status. 00: no alert; 01: fast air leak alert; 10: slow air
leak alert; 11: tire inflation alert.
Example
GPRS Sending
@@g27,863835020877432,DA2,01*C8\r\n
GPRS Reply
$$g35,863835020877432,DA2,010185R000000K@*F2\r\n
9.2.4
Deleting Tire Pressure Sensors – DA3 (GPRS)
GPRS Sending
DA3,<
Location 1
>...<
Location n
>
