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5. Special Function
5.1 Short connection
The use of TCP short connections is mainly to save server resources, which is generally applied to multi point to one
scenario. The use of short connections ensures that the existing connections are useful connections without additional
control means.
The TCP short connection function is applied to the TCP Client mode. After the short connection function is enabled,
the message is sent. If no data is received from the serial port or network port within the set time, the connection will be
automatically disconnected. The short connection function is closed by default, and the disconnection time can be set
after the function is opened. The setting range is 2~255S.
5.2 Registration package mechanism
In transparent transmission mode, the user can choose to make the module send a registration package to the server.
The registration package is designed to enable the server to identify the data source device or to access the password for
the server function.
E830-DIO(ETH-2A) has 4 registration package mechanism:
>Sending MAC when connected: When the connection is established, the module sends the MAC address of the
module itself to the device.
>Sending custom data when connected: When the connection is established, the module sends a user-defined data to
the device.
>Each data package sending MAC: The data of each frame sent by the module is added with the MAC address of
the module.
>Each data package sending custom data: User-defined data will be added before each frame of data sent by the
module.
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E830-DIO(ETH-2A) User Manual
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