Specifications

GV300 @Track Air Interface Protocol
3.2.24. Transparent Data Transmission
The command AT+GTDAT is used to transfer data between the backend server and the equipment
connected to the local serial port of the device. Data to the backend server is wrapped into
message +RESP:GTDAT and sent to the backend server while data to the equipment is directly
output to the serial port without the @Tracker protocol stuffing. All data is transparent to the
device.
Before using this command, you should use AT+GTURT command to set the correct parameter
of the serial port first.
¾ AT+GTDAT=
Example:
AT+GTDAT=gv300,0,,data to the backend server,,,,,0017$
AT+GTDAT=gv300,1,,data to the serial port,,,,,0017$
Parameter Length(byte) Range/Format Default
Password 4 – 6 '0' – '9' 'a' – 'z' 'A' – 'Z' Gv300
Command Type 1 0|1
Reserved 0
Data <=100 ASCII Code
Reserved 0
Reserved 0
Reserved 0
Reserved 0
Serial Number 4 0000 – FFFF
Tail Character 1 $ $
 <Command Type>: Command type to indicate which way to send the data.
z 0 means to send the data to the backend server with +RESP:GTDAT message.
z 1 means to send the pure data directly to the serial port.
 <Data>: Data to be transferred between the backend server and the equipment connected to
the serial port of the device.
The acknowledgment message of AT+GTDAT command:
¾ +ACK:GTDAT,
Example:
+ACK:GTDAT,060100,135790246811220,,0017,20090214093254,11F0$
TRACGV300AN002 – 63 –
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