8 Ports RS232/RS485/RS422 Serial Device Server USR-N668

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8 Ports RS232/RS485/RS422 Serial Device Server USR-N668

USR-N668 is an 8 Serial Ports Industrial RS232 RS485 RS422 to Ethernet Converter

Power: AC 85-AC 265
Modbus RTU to Modbus TCP, Modbus Polling
Web server, SSL Client

Note: This kit includes the AU power adapter, DB9 cable, and connectors.

Features of 8 ports Serial Ethernet Converter

TI Cortex-M4 kernel, industrial working temperature range and TCPIP protocol stack.
Auto-MDI/MDIX, RJ45 port with 10/100Mbps
TCP Server, TCP Client, UDP Client, UDP Server and HTTPD Client work mode
8 ports can work independently at the same time
Can distinguish which serial port connects to the device via port number
Support virtual serial port and provide corresponding software USR-VCOM
Serial baud rate from 600bps to 230.4K bps
DNS and DHCP supported
Provide PC TCP/IP socket programming example such as VB, C++, Delphi, Android and IOS
Built-in web page; also can customise web page for users
The global unique MAC address bought from IEEE (begin with D8-B0-4C); user can define MAC address
Support upgrade firmware via network
Support keepalive, rapidly detect dead links
Support account and password can be used to page login and network settings
Support one channel Websocket, realise bidirectional transparent transmission between web page and serial 0
Support Modbus RTU to Modbus TCP
Support UDP broadcast function
Each serial can work as rs232,rs485 or rs422; the Default port is RS232 BD9 male port
8 channel serial communication indicator: TX/RX, CTS/RTS, XON/XOFF
Support DC adapter and 5.08-2 terminal power supply
Reload button, one key to restore default settings
RJ45 with Link/Data indicator light, built-in isolation transformer and 2 KV electromagnetic isolation

Application Field of 8 ports Serial Device Servers

Industrial data transmission, industrial automation
security and protection monitoring, public security
Smart home, power control, environmental monitoring, intelligent agriculture
Door check on work attendance system, POS system, rice selling system
Building automation system, power monitoring, self-service banking system, telecom machine room monitoring

Characters of USR-N668 Serial Ethernet Converter

Item	Parameters	Value
Hardware	Work Voltage	AC 85~265 V，50/60Hz
	Power Consumption	1.6W
	Ethernet	RJ45、10/100Mbps
	Number of Ethernet Port	2
	Serial Port Format	RJ45
	Number of Serial Port	8 Ports
	Baud Rate	300-115.2K（bps）
Software	Network Protocol	IP、TCP/UDP、ARP、ICMP、IPV4、HTTP
	IP	Static IP、DHCP
	DNS	Supports user defined
	Configuration	Software, Webpage, AT command
	Transparent transmission	TCP Server/TCP Client/UDP Server/UDP Client/ Httpd Client
	Class RFC2217	Support
	Network Cache	10Kbyte
	Serial port Cache	10Kbyte
	Average transmission delay	>=50ms
	Software	VCOM、Setup Software, Test program
	Packaging mechanism	50ms packing time, 1472 bytes packing length
Others	Certificate	CE/RoHs
	Reliability grade	EN61000-4-2(static electricity) Grade 4 EN61000-4-4(pulse group) Grade 4 EN61000-4-5(surge) Grade 3
	Shell Protection	IP30
	Size	48218545 MM
	Work Temp	-40～85℃
	Storage Temp	-40～105℃
	Work Humidity	5%～95% RH
	Storage Temp	5%～95% RH

USR-N668 User Manual

industrial 8 serial port ethernet converter USR-N668

ARM9 Solution

64MB built-in RAM, 16MB Flash, high speed

industrial 8 serial port ethernet converter USR-N668 Rack type serial port ethernet converter, The shell size: 482*185*45MM

Rack-type serial device servers USR-N668

Serial port switching among RS232/RS485/RS422

New and industrial design which saves the port space of device, prevent from ash and collision and promote the safety while operating.
Works at RS232 port by default. Please adjust the dial code to corresponding position when you use RS485/422 serial port.
Every serial port can choose mode freely, don't worry about unified mode for all serial ports.

interface introduce of industrial 8 serial port ethernet converter USR-N668

Interfaces of serial device servers USR-N668

8 serial ports

Hardware protection

EFT:Electrical fast pulse train

Ensure that the equipment hardware is not damaged
when the instantaneous large current (such as lightning
strike, power switch, etc.) occurs in the circuit

Power-4KV
net port-2KV

Electrostatic protection ESD

Prevent electrostatic damage to equipment
( ex body static electricity, dust static electricity,
(such as lightning strike, power switch, etc.)
electric power application environmental arc）

Air: ±15KV
Contact: ±8KV

Watchdog

Hardware watchdog design,
never crash in 24 hours

Work mode

TCP Server

Serial server devices USR-N668 listen on the setting port and wait for a TCP client connection.
The data which the serial ports sent out transparently transmit to all connected client via serial device USR-N668.

TCP client mode

Serial device servers USR-N668 initiate a TCP lint to the set IP address. If the connection fails, N668 will keep
trying to reconnect until it succeeds. Once the link is successful, the data will be transparently transmitted
between PC and serial device in bi-directional.

UDP mode

Serial server devices USR-N668 sent the data to designated IP /Port. If the connection fails,
USR-N668 will keep trying to reconnect until it succeeds. Meanwhile, USR-N668 listen the port and forward
all data received to serial device.

httpsD Client

Support serial data transmitted to designed server in httpsD way

Special function

The clock to proofread

RTC(real-time clock, no network required)+NTP(net time)
It can still provide accurate time positioning for the system
whether in the networking environment or not

More Function

VPN+Diagnosis of network + Timing task +DDNS+Modbus TCP to RTU

Remote monitoring and remote firmware upgrade

Remote monitoring can check the running status of field equipment