Design
Product colour	Black
Housing material	Metal
Safety	UL 60950-1, UL 62368-1
Reset button
DIN rail mounting
Indication
LED indicators	Power, Status
Logistics data
Country of origin	Taiwan
Products per master (outer) case	10 pc(s)
Master (outer) case gross weight	5.41 kg
Package volume	2265.35 cm³
Master (outer) case volume	27467.33 cm³
Master (outer) case length	490 mm
Master (outer) case width	315 mm
Master (outer) case height	178 mm
Master (outer) case net weight	3.2 kg
Operational conditions
Operating temperature (T-T)	0 - 60 °C
Storage temperature (T-T)	-40 - 75 °C
Operating relative humidity (H-H)	5 - 95%
Packaging content
Number of foot pads	4 pc(s)
DIN rail kit included
Terminal block included
User guide
Ports & interfaces
Ethernet LAN (RJ-45) ports	1
Ethernet LAN
Terminal block port
Power
Power source type	DC
Power consumption (max)	1.3 W
Power consumption (typical)	1.18 W
Input voltage	100 - 240 V
Input frequency	50 - 60 Hz
Output voltage	9 - 48 V
Sustainability
Sustainability certificates	UL ECOLOGO
Sustainability compliance
Technical data
Length packaging	0.239m
Packaging volume	0.0023m³
Width packaging	0.059m
Height packaging	0.160m
Weight	0.470kg
Inputs	RS232/422/485 x1
Number of ports	1
Interface	serial
PoE
Technical details
Serial ports quantity	1
Serial interface type	RS-232/422/485
Isolation	1.5 kV
Surge protection voltage	2 kV
Ethernet LAN data rates	10,100 Mbit/s
Electrostatic Discharge (ESD) protection	8 kV
Data transfer rate	100 Mbit/s
Baud rate	921.6 Kbit/s
RS-232 signals	CTS, DCD, DSR, DTR, GND, RTS, RXD, TXD
RS-422 signals	GND, RxD+, RxD-, TxD+, TxD-
RS-485 signals	Data+, Data-, GND, RxD+, RxD-, TxD+, TxD-
Data bits	5, 6, 7, 8
Flow Control type	DTR/DSR, RTS/CTS, XON/XOFF
Parity bit	Even, Mark, No, Odd, Space
Stop bits	1, 1.5, 2
Compliance certificates	RoHS
Flow control support
Weight & dimensions
Width	117 mm
Depth	98 mm
Height	26 mm
Weight	200 g
Package width	59 mm
Package depth	239 mm
Package height	160 mm
Package weight	470 g

The SN3401 Secure Device Server is external IP-based network device that securely connects legacy RS-232/422/485 serial devices to an Ethernet network to be accessed remotely from a computer located anywhere, allowing users to expand the number of serial ports for any host computer over a network.
The SN3401 is especially suited for industrial process control applications, given the abundant use of the Supervisory Control and Data Acquisition (SCADA) systems across many industries for collecting data from PLCs, meters, and sensors via serial ports. The SN3401 bi-directionally translates data between serial and Ethernet formats, and facilitates access to the data from all data collection instruments from local and remote sites through an Ethernet network.
The SN3401 has a number of useful operation modes. It supports secure TCP server / client, secure serial tunneling server / client, secure Real COM, and console management modes for security-critical applications, such as telecom, access control, and remote site management.
The SN3401 can be used as standard Modbus gateway to convert between Modbus TCP and Modbus RTU / ASCII protocols. It can integrate Modbus serial slave devices seamlessly into an existing Modbus TCP network and thereby make them accessible to serial master devices.
Package Contents:1x Secure Device Server
1x power adapter
1x terminal block
1x foot pad set (4 pcs)
1x DIN rail mount kit
1x user instructions
Connectors
Serial1 x DB-9 Male
Network1 x RJ-45 Female
Power1 x DC Jack
1 x 3-pole Terminal Block
Switches
Reset1 x Semi-recessed Pushbutton
LEDs
Power1 (Green)
Status1 (Yellow Green/Red)
10/100 Mbps2 (Green/Orange)
Ports1 (Green/Orange)
Input voltageDC Jack: 9VDC (Power Adapter: 9VDC,100-240VAC 50~60 Hz)
Terminal Block: 9-48 VDC
Power ConsumptionDC9V:1.18W:6BTU
DC48V:1.30W:6BTU
Interfaces
SerialRS-232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
RS-422: Tx+, Tx-, Rx+, Rx-, GND
RS-485-4w: Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w: Data+, Data-, GND
Pull High/Low Resistor for RS-485: 1 kilo-ohm, 150 kilo-ohms
Baud Rate: 110, 134, 150, 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600 bps
Data Bits: 5, 6, 7, 8
Parity: None, Even, Odd, Space, Mark
Stop Bits: 1, 1.5, 2
Flow Control: RTS/CTS, DTR/DSR, XON/XOFF
Network10/100 Base TX
Built-in 1.5 kV Magnetic Isolation Protection
Industrial ProtocolsEthernet: Modbus TCP Client (Master), Modbus TCP Server (Slave)
Serial: Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave
Max. 16 connections under Modbus Master mode and 32 connections under Modbus Slave mode.
ComplianceEMC: EN 55032/35
EMI: CISPR 32, FCC Part 15B Class A
EMS:
IEC 61000-4-2 ESD: Contact: 4 kV; Air: 8 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 3 V/m
IEC 61000-4-4 EFT: Power: 1 kV; Signal: 0.5 kV
IEC 61000-4-5 Surge: Power: 2 kV (Power Adapter), 1kV (Terminal Block); Signal: 1 kV
IEC 61000-4-6 CS: 150 kHz to 10 MHz: 3 V/m; 10 kHz to 30 MHz: 3 to 1 V/m; 30 kHz to 80 MHz: 1 V/m
IEC 61000-4-8 PFMF
IEC 61000-4-11 DIPs
Safety: UL 60950-1 and UL 62368-1 standards compliant
RoHS
Environmental
Operating Temperature0 - 60°C
Storage Temperature-40 - 75°C
Humidity5 ~ 95% RH, Non-condensing
Physical Properties
HousingMetal
Weight0.20 kg ( 0.44 lb )
Dimensions (L x W x H)9.80 x 11.70 x 2.60 cm
(3.86 x 4.61 x 1.02 in.)
InstallationDesktop, Wall Mounting, Din-Rail Mounting, Rack Mounting (with VE-RMK1U)
OthersRack mounting kit (VE-RMK1U) is sold separately.
NoteFor some of rack mount products, please note that the standard physical dimensions of WxDxH are expressed using a LxWxH format.