
8 Ports RS232/RS485/RS422 Serial to Ethernet Converters USR-N668
8 Ports RS232/RS485/RS422 Serial to Ethernet Converters 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
User Manual
Application Software
USR-N668-setup-V1.0.3
USR-TCP232-Test-V1.3
Virtual Serial Software V3.7.2.525
UsrAssistent-debug.apk
Socket_Demo.zip
Product Certificate
CE-Certificates
FCC-Certificates
ROHS2.0-Certificates-For-Serial-Ethernet
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 |
482*185*45 MM |
|
Work Temp |
-40~85℃ |
|
Storage Temp |
-40~105℃ |
|
Work Humidity |
5%~95% RH |
|
Storage Temp |
5%~95% RH |

ARM9 Solution
64MB built-in RAM, 16MB Flash, high speed

Rack type serial port ethernet converter

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

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 device USR-N668 listens on the setting port and waits 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
The serial converter N668 initiates 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 device 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 listens the port and forwards
all data received to serial device.

HTTPD Client
Support serial data transmitted to designed server in HTTPD 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

