Chengdu Ebyte Electronic Technology Co,.Ltd E810-DTU User Manual
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and data is transmitted to a specified IP.
(2) In UDP Client mode, the E810-DTU(RS232)-V2.0 will only communicate with the target IP's target port, if the
data is not from this channel, it will not be received by the E810-DTU(RS232)-V2.0.
(3) In UDP Client mode, if the target address is set to 255.255.255.255, it will broadcast within the whole UDP
network segment, and it can also receive broadcast data
，
E810-DTU(RS485)-V2.0 supports broadcast within the
supporting network segment, such as the mode of xxx.xxx.xxx.255.
5 Special function
5.1 Short connection
The use of short connections is mainly to save server resources, and is generally applied to multipoint-to-point
scenarios. Short connections is to ensure that existing connections are useful connections and do not require additional
controls for filtering.
The short connection function is applied in the TCP Client mode. After the short connection function is enabled,
when sending data. If no data is received from the serial port or network port within the setting time, the connection will
be automatically disconnected. The short connection function is turned off by default, and the disconnection time can be
set after the function is turned on, the range is 2~255S.
5.2 Registration packet mechanism
In the network transparent transmission mode, users can make the module send registration packets to the server.
The registration packet is for the server to identify the data source device, or as a password to obtain server authorization.
E810-DTU(RS232)-V2.0 has 4 registration packet mechanisms:
Sending MAC when connecting: The module will send the its own MAC address to the device when the connection
is established.
Sending user-defined data when connecting: The module sends a user-defined data to the device when the
connection is established
Each packet of data sending MAC: The module will add its MAC address in front of each frame of data sent.
Each packet of data sending user-defined data: The module will add its user-defined data in front of each frame of
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