4 Ports RS485 to Ethernet Converters

Comparison of new and old schemes

Basic Function-transmission

Scheme upgrade to provide better experience

Master chip adopts ST crotex-M7 core, the main frequency is up to 400Mhz,
fast processing speed, high stable and reliable performance

Multiple hardware protection

Redundant Power Supply

Wide input voltage DC 5-36V,with reverse polarity protection

Block Diagram

Work mode

TCP Server

The server listens to the specified port and waits for the TCP client to connect,
The data sent by the serial device will be transparently transmitted to all
successfully connected clients through the serial device server.

TCP Client

The serial device server initiates a TCP connection to the specified IP address.
If the connection fails, the serial server will continue to try to reconnect until it succeeds.
If the connection is successful, the server can transparently transmit data with
the serial device in two-way.

UDP mode

The serial device server sends the data of
the serial device to the designated IP network device.
The serial device server monitors the port meanwhile and
forwards all received data to the serial device.

HTTPD Client

Serial port data can be submitted to a specified server by GET or POST method

More features

Modbus gateway

Support modbus RTU and modbus TCP protocol conversion
Support modbus multi-host polling

Virtual Com Software

Product Details

Dimensions :222*122*29 mm
（L*W*H , Including terminals and mounting ears）

Application case

Charging pile application case

N540 can connect the charging pile to the charging intelligent service platform to
realize two-way data transmission between the charging device and the platform.
The billing information and power usage can be viewed remotely through the
platform to facilitate operation and maintenance.

Industrial automation application case

The application of N540 in traditional industrial scenarios can
effectively solve the problem that workers need to monitor equipment on-site,
save labor costs, and increase production efficiency and safety factors.
Data management makes the production process control more refined.

Unattended weighing

Connect the serial device server N540 to the barrier gate,
and the control center remotely controls the barrier switch via Ethernet.
Meanwhile, USR-N540 also supports unified use of unattended weighing
equipment like license plate snapshot serial port camera,weighing instrument,
LED promoting screen, RFID card reader,vehicle induction coils,
receipt printer and so on.