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> Plus 411 RJ45 (6673)

Main Features

  • Ethernet to serial 4 ports RS232 on RJ45
  • Virtual Com Port driver for Windows
  • Secure Server with latest SSL/AES-256 encryption
  • Operation in Driver Mode, TCP/IP and many other
  • Quick Configuration over Driver and Browser
  • ESD protection on serial port, Ethernet, DC power
  • DIN Rail and Wall mount options
  • Port expansion over USB

VScom NetCom+ (Plus) 411 RJ45, a quad port Serial Device Server for Ethernet/TCP to RS232 New


NetCom Plus 411 RJ45
(NetCom 411, NetCom 411 PRO)

Quick Link: | Main Features | More Pictures | Overview | Ethernet Interface | Serial Interface | Serial Port Expansion | Software | Installation & Configuration | Security | viaVPN Remote Access (option) | Power Requirements | Housing and Mounting | Environmental Data | Standards | MTBF (Mean Time Between Failures) | Warranty | Open Source Software | Ordering Information | Options | Packaging | Download |


  More Pictures

VScom NetCom+ (Plus) 411 RJ45, a quad port Serial Device Server for Ethernet/TCP to RS232                       
Click on the thumbnails to enlarge them …

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The Ethernet to Serial Gateways NetCom Plus connect RS232 or RS485 devices to a network running TCP/IP. These Serial Device Servers are rugged industrial devices with metal case and DIN-Rail or wall mounting, further supported by ESD protection on serial ports, power input and USB.
The NetCom+ 411 RJ45 provides four RS232 ports on RJ45 connectors. Use adapters RJ45-to-DB9M with customers Cat5 cables if necessary.

Windows Driver installs Com Ports

The driver for Windows operating system installs Virtual Com Ports. These operate in the same way as built-in ports, but via Ethernet or optional WLAN 802.11b/g/n. Easy-to-use Installation and Management software guides users trough the configuration.

High Speed Serial Ports, Low Power

The serial ports allow data rates of up to 460.8kbps in RS232 modes. The ports also allow every non-standard bitrate. See FAQ.
The USB 2.0 port supports USB-COM Plus modules, to add more standard or isolated serial ports. The USB port may also connect external WLAN.
The gateways demand 4W of power or less. The flexible input allows for various sources of customers choice.

Easy Configuration, versatile Operation Modes

NetCom+ are configured over Driver Panels and WEB Browser. This is also possible via serial Port, Telnet or SNMP. NetCom+ provide Driver Mode, TCP/IP or UDP connection, and many operation modes beyond those.

Secure Remote Access for Monitoring

For NetCom Plus series there is a software option using the viaVPN Cloud system ( to be remotely accessed and monitored over Internet. viaVPN provides secure and strongly encrypted access, without any reconfiguration of existing firewalls. The access to the firmware via Ethernet or WLAN is extended by viaVPN over Internet, protected by a VPN tunnel. If the Com port is not occupied by local access, also remote operation over Internet is possible.

  Ethernet Interface


100Mbps/10Mbps Auto-detecting


RJ45 (8P8C) 8 pin


Power, WLAN, Ready, Ethernet Link / Speed

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  Serial Interface

No. of Ports/Type

4 × RS232


RJ45 (8P8C) 8 pin, uses customers Cat5 cables
RJ45-TO-DB9M Adapters to change to DB9 wiring available


16kV ESD surge protection



Data bits

7, 8

Stop bits

1, 2


None, Even, Odd, Mark, Space

Flow Control



200 bps to 460.8/500 kbps
Supports non-standard baudrates


TxD/RxD for each port

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  Serial Port Expansion


USB 2.0 High Speed type A, 500mA @5V at front side

Expansion Options

Connect USB-4COM Plus (4 ports) or USB-8COM Plus (8 ports) devices to add more serial ports to NetCom Plus server

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Network Protocols

TCP, UDP, Telnet, PPP, DHCP, ICMP, UPnP, HTTP, LPD, SNMP V1/2c/3, DNS, openVPN

Virtual-COM Mode

Driver creates virtual COM ports via NetCom protocol © for
Windows XP/7/8/10, Win-Server 2003 to 2008 R2 (x86/x64)

Socket Modes

TCP RAW Server, TCP RAW Client, UDP Mode, Print Server
Automatic switching between Virtual-COM and TCP-RAW Server modes.

Tunnel Modes

Null Modem Tunnel and IP Modem

Fixed TTY Drivers

socat Tool, Linux OS

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  Installation & Configuration


NetCom Plus Manager automatically finds NetCom Plus devices in the local network.


With Network discovery enabled NetCom Plus servers announce their presence via UPnP making their IP visible.


via WEB-Browser, Driver Panels, NetCom Manager, serial console, Telnet console or SNMP


Virtual-COM mode works through firewalls

Firmware Update

via WEB Browser

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Password Protection

for all available configuration options e.g. via WEB-Browser

Secure Server

create openVPN™ tunnels, for encrypted transmission of all serial and configuration data using high security SSL/TLS standards.

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  viaVPN Remote Access (option)

Connect via Internet

viaVPN technology provides easy and secure access to remotely installed NetCom Plus servers for their configuration or for connecting their virtual COM ports through Internet. With the viaVPN option the NetCom Plus servers are no more limited to only work inside of a local network.


All communications use openVPN-tunnels encrypted by SSL/TLS and AES-256 standards.

Firewall friendly

No Reconfiguration of firewalls is required for viaVPN remote access.

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  Power Requirements

Input Voltage

9 - 54V DC

Power Consumption

300 mA @ 12V, 3.6W max


3-pin Terminal Block

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  Housing and Mounting


0.8mm sheet metal


w/o box 0.25kg; w/h box 0.35kg


115×73×25 mm³ (W×L×H)


150×107×48 mm³


  • DIN-Rail (optional)
  • Wall mount (optional)

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  Environmental Data

Operating Temp

−20°C - 65°C

Storage Temp

−20°C – 85°C

Ambient Humidity

5-95% non condensing

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  • EN 55022 Class B
  • EN 61000-3-2: Limits of harmonic current emissions
  • EN 61000-3-3: Limitation of voltage changes
  • 47 CFR FCC Part 15 Subpart B

EMS (EN 55024)

  • EN 61000-4-3: Radiated RFI
  • EN 61000-4-4: Electrical Fast Transient
  • EN 61000-4-5: Surge
  • EN 61000-4-6: Induced RFI
  • EN 61000-4-8: Power Frequency Magnetic Field
  • EN 61000-4-11: Power supply dips


EN 61000-4-2 4kV contact 8kV air for

  • Serial Ports
  • USB
  • Ethernet
  • DC Power connector

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  MTBF (Mean Time Between Failures)


available soon


Telcordia (Bellcore) Standard; RelCalc. 5.0 BELL-7

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Warranty Period

2 years

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  Open Source Software


This product uses open source software to fulfill part of its functions. Licenses for the open source software are granted under the GNU General Public License in various versions. For details about those see the information in the firmware download and

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  Ordering Information


NetCom Plus 411 RJ45 (4x RS232, expandable)

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Power adapter 110-230V AC to 12V @1A, DC, EU plug


Power adapter 110-230V AC to 12V @1A, DC, US plug


Activate option viaVPN for secure remote access over Internet


DK-NCP DIN-Rail mounting kit (clamp on rear side)


WK-NCP Wallmount kit


DK 35A Plastic DIN-Rail mounting kit (needs WK-NCP)

6062 x 4

Set 4 pcs Adapter RJ45-TO-DB9M
Cat5 to Dsub9-male, use own Cat5 cables for attaching

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Packing list

  • NetCom Plus 411 RJ45 Serial Device Server
  • Terminal block for Power Supply
  • 4 rubber feet for table mode

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 (Driver Installer (version   November 2 2018))
 (Driver Installer (version   November 2 2018))
 (Driver Installer (WHQL version   December 10 2007))
 (Release October 2019)
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* Specifications are subject to change without notice.
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