Random Local Port; Remote Upgrade - Ebyte E180-DTU(Z20-ETH) User Manual

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Chengdu Ebyte Electronic Technology Co.,Ltd.

set".

ZigBee AT Instruction configuration: related parameter query modification of equipment, can be completed through AT

instruction configuration. For specific AT instructions, please refer to the "E180-ZG120A-AT instruction set". AT instruction

mode is a special mode in transmission mode. If the device in transmission mode has no distribution network, it will enter AT

command mode after re-power. The equipment that successfully distributes the network in AT mode will automatically enter the

transmission mode after restart.

3.8.4 Random local port

TCP client, UDP client, HTTP client and MQTT client can configure the native port as 0 (using random native port) in

server mode, otherwise the client cannot establish the connection correctly.

Using a random port connection to quickly reestablish the connection when the device accidentally breaks the server,

prevents the server from rejecting the connection for four incomplete waves, suggesting a random port in client mode.

The device automatically enables random ports when configuring the TCP client, HTTP client, and MQTT client mode.

In order to facilitate later maintenance and upgrade functions and replacement of different firmware, the Ethernet part

(NA11x series, NB 114, NS1, NT1, etc.) supports online upgrades, and our users can upgrade or replace the current firmware

through the upper machine.

Network upgrade firmware operation steps:

Step 1: download the upper machine and the "product firmware" from the corresponding location on the official website;

Step 2: Open the upper computer, click "Menu", and select "Device Upgrade Assistant";

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E180-DTU(Z20-ETH) User Manual

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