Base Station Positioning Function; Serial Port Packaging Function; Network At Commands Function - Ebyte E840-TTL-4G02E User Manual

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Chengdu Ebyte Electronic Technology Co.,Ltd.

4.6 Base station positioning function

The E840-TTL-4G02E supports the base station positioning function. The user can send the AT+LBS command in

the AT mode to read the current LBS information of the device. The device returns the data format as follows:

The "LAC" is the unique identification number of the global cell, "CID" is the base station number, (xxxx is the

hexadecimal value);

The LAC and CID number can be used to query the current location information of the device. For the query

method, refer to the link:

http://www.gpsspg.com/bs.htm

Note: This website may not be available, it is not maintained by Ebyte. You can search for available websites

through keyword "base station location".

E840-TTL-4G02E serial port break time and packing length can be configured. The user can configure the frame

break time and the package length through the AT+UARTTS command. Please refers to the AT command for the specific

configuration .

a) Frame break time: When the serial port receives data, it will continuously detect the interval between two bytes. If

it is greater than the configuration time (50-2000ms), the device will automatically send the previously received data as a

data packet to Network side;

b) Packing length: When the serial port receives data, it will continuously check the length of the currently received

data. If the length of the configuration is exceeded (20~1024 bytes), the device will automatically send the previously

received data as a data packet to Network side.

E840-TTL-4G02E supports connection on web pages, and when the module works in transparent transmission mode.

Through the connected web pages, it can inquiry or configure parameters remotely. The command format is:

<Head>AT+CMD, The <Head> is the device network AT identifier, the default value is: EbyteNET, CMD is the

corresponding command, you can view the AT command for details;

(*Note: For the incorrect network AT command, it will return + ERRER)

Here is an example of query baud rate:

+OK=LAC,xxxx;CID,xxxx

E840-TTL-4G02E User Manual

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