Simplify the integration of legacy serial devices into modern Ethernet networks with this versatile converter module. Designed for effortless bi-directional data transmission, it offers plug-and-play functionality, robust features, and multiple operating modes. This makes it an indispensable tool for IoT projects, safety and security systems, industrial automation, and a wide range of applications requiring seamless networking of serial devices.

Key Features:

Embedded Ethernet MAC & PHY:Streamlines network connectivity without complex configuration.

Transparent UART-Ethernet Conversion:Bidirectional data flow without the need for complex communication protocols.

10/100M Auto-Negotiating Ethernet:Adapts seamlessly to different network speeds ensuring optimal performance.

Auto-MDI/MDIX Support:Eliminates the need for crossover cables, simplifying installation and setup.

DHCP, DNS Support:Allows the module to obtain its IP address and other network settings automatically, saving time and effort.

Multiple Operating Modes (TCP/UDP Client/Server):Choose the ideal operating mode for your specific application, enhancing flexibility.

Dual UART Channels:Connect and communicate with two serial devices simultaneously, increasing efficiency.

RS485 RX/TX Auto Switch:Automatically handles RS485 communication for broader compatibility with serial standards.

Virtual Serial Port Software:Ensures your module is recognized as a standard serial port, maximizing compatibility with existing applications.

KEEPALIVE Mechanism:Maintains connection stability by detecting and recovering from failures.

Resources
WIKI:2-CH_UART_TO_ETH

Application Example
Bi-Direction Transparent Transmission Between UART TTL And Wired Ethernet

Extend The Communication Distance For Serial Devices

Manage Multi Serial Client Devices Remotely Via One Web Server

Manage Serial Server Remotely Via Multi Web Clients

What’s On Board

UART 1 connection status indicator
UART 2 connection status indicator
Power indicator
CH9121 control pins

CH9121 driver
AMS1117-3.3V power supply IC
RT9193-18GB power supply IC
Ethernet port

Pinout Definition

5V / 3V3
power positive, use any pin of 5V/3.3V pins for power supply

GND
ground

RST1
external reset input, low active

RESET
restore to factory setting, detected when chip poweron, low active

TXD1
asynchronous UART 1 data output (enabled by default)

TXD2
asynchronous UART 2 data output(disabled by default)

RXD1
asynchronous UART 1 data input (enabled by default)

RXD2
asynchronous UART 2 data input(disabled by default)

CFG0
UART config mode, low level to enter configuration, high level to exit configuration

RUN
Operating status indicating pin

DIR1
UART 1 RS485 RX/TX switch (connects to external RS485 controller)

DIR2
UART 2 RS485 RX/TX switch (connects to external RS485 controller)

Dimensions