Chengdu Ebyte Electronic Technology Co.,Ltd
E840-DTU(4G-02E) User Manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co.,Ltd
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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;
8
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Enable Ebyte IoT platform function
The AT+EBTIOT command is used to set whether the module enables the transparent transmission function of the
EBYTE cloud platform, after it is turned on, the information such as the heartbeat and registration packet configured by
the user will be invalid. The user only needs to set the forwarding relationship of the corresponding device to the
platform to implement the device. Data is transparent. For details of the related operations, please refer to the "Ebyte
Cloud Platform Transparent Transmission Guide".
9
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Network AT command
E840-DTU(4G-02E) supports the connection to the network, and the module works in transparent transmission mode,
through the connected web page, remote query / configuration parameters,
the command format is:<Head>AT+CMD, where <Head> is the AT identifier of the device network.
The factory default is: EbyteNET, CMD is the corresponding command. Specifically, you can view the introduction of the AT
command.
(*Note: For the wrong network AT command, unified reply + ERRER)This demo uses the query baud rate as an
example:
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