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4 X RS-485 to Ethernet Converter Model USR-504

USR-N540-H7-4 is a 4-port RS485 to ethernet Converters. USR IOT's RS485 to ethernet Converters USR-N540 can realize bi-directional transparent transmission between RS485 and network.

● 4-port RS485 Serial to Ethernet Converters
● Power supply accepts wide voltage input range DC 9-36V
● Support TCP server/client, UDP server/client,https client, Virtual COM
● Support Modbus RTU to Modbus TCP, Modbus Polling
● Support flow control XON/XOFF
● Support 4 RS-485 Ports to TCP/IP 10/100Base-T(X) self-adaptive Ethernet interface
● Configuration via Web Server page, AT commands, and Windows Utility

USR-504 Small.jpg


Processor                                   ST Cortex-M7

Basic Frequency                        400MHz

Flash                                          128K+4M byte

Ethernet                                      Port Number1

Interface Standar                        d8 pin RJ45

Rate                                           10/100 Mbps, MDI/MDIX, auto switch between cross 

                                                    and  direct connection

Protection                                   2KV electromagnetism isolation, shell insulation blocking

Network Protocol                        IP,TCP,UDP,DHCP,DNS,https,ARP,ICMP,Web 

                                                    socket,httpsd client

Receive Buffer                            Max 16k bytes buffer

Serial Port Number                     4  RS485 Ports, can work at the same time)

Interface                                     StandardRS-485: 2 wire (A+,B-) half-duplex

Data Bits                                     7,8

Stop Bit                                       1,2

Parity Bit                                     Even,Odd

Baud Rate                                  600bps ~ 921600 bps

Flow Control                               XON XOFF

Buffer Send and receive             2k bytes respectively

Protection RS-485:                     anti-static 2KV,lightning protection

RS-485 Pull-up and Pull-Down   Resistor2.2 KΩ

Software                                      Virtual Serial(USR-VCOM)Windows 2000 or higher(32

                                                    bit/64 bit)

Configuration                              Built-in webpage, computer set-up software, serial


Size                                            222 x 122 x 29 mm (including shell and terminals)

Operating Temp.                         -40 ~ 85°C (industry)

Storage Temp.                            -40 ~ 85°C, 5 ~ 95% RH (no condensation)

Input Voltage                              DC 9 ~ 36V

Working Current                         53mA @ 12V


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