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