Broadcast Monitoring; Communication Key; Ethernet Part; Ip Acquisition - Ebyte E90-DTU User Manual

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E90-DTU(433C30E)-V2.0 User Manual
to use "high" power;

4.2.2. Broadcast monitoring

Set the "gateway" wireless address to 0xFFFF: it can monitor the data transmission of all modules on the same
channel; the sent data can be received by modules with any address on the same channel, thus playing the role of
broadcasting and monitoring

4.2.3. Communication key

The key can only be configured and cannot be read. The configuration is always displayed as 0 (the configuration
range is 0 to 255). The key is used for user encryption to avoid the interception of wireless data in the air by similar
modules. The "gateway" will use these two bytes as a calculation factor to transform and encrypt the wireless signal
in the air.
Since the key cannot be read, the correct key needs to be entered during configuration, otherwise the device will
encrypt the communication data with 0.
To configure the key, you need to enable the "ciphertext function"

4.3. Ethernet part

4.3.1. IP Acquisition

Dynamic acquisition (DHCP):
The dynamic acquisition device will automatically obtain the IP address and subnet mask from the router and
synchronize the router's gateway and DNS server. Therefore, in the dynamic acquisition mode, only the working
mode and target parameters of the device can be configured.
Static configuration (STATIC):
You need to manually configure the device's IP (factory default: 192.168.3.7), subnet mask (factory default:
255.255.255.0), gateway (factory default: 192.168.3.1), DNS server (factory default: 114.114.114.114) and other
parameters , the configuration is to ensure that the communication devices are located in the same network segment
and to avoid IP conflicts, otherwise the device cannot pass through and configure the web page normally.

4.3.2. Device Port

random port:
TCP client, UDP client, HTTP client, MQTT client can configure the local port to 0 (use random local port), and
server mode cannot use random port, otherwise the client cannot establish the connection correctly (the device does
not correctly port listening).
Using a random port connection can quickly re-establish the connection when the device disconnects from the
server unexpectedly, preventing the server from rejecting the connection due to four waves of incompleteness. It is
recommended to use a random port in client mode.
When the device configures the TCP client, HTTP client, and MQTT client mode on the web page, it will
automatically configure a random port, which can be customized to cancel.
Static port:
Device fixed port (factory default: 8886), TCP server mode device listens to the configured port, accepts client
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