Search Product:
Select product by model name:

> Plus 213 (6655)

Main Features

  • Ethernet to serial 2 ports RS232/422/485
  • 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
  • Optional: Wireless network IEEE 802.11b/g/n
  • Port expansion over USB

VScom NetCom+ (Plus) 213, a dual port Serial Device Server for Ethernet/TCP to RS232/422/485


NetCom Plus 213

Quick Link: | Main Features | More Pictures | Overview | Ethernet Interface | Serial Interface | Serial Port Expansion | Software | Installation & Configuration | Security | viaVPN Remote Access (option) | Wireless interface (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) 213, a dual port Serial Device Server for Ethernet/TCP to RS232/422/485                             
Click on the thumbnails to enlarge them …

>Back to top      


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+ 213 provides two RS232/422/485 ports.

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 3.7Mbps in RS422/485 or 1000kbps in RS232 modes. The ports also allow every non-standard bitrate up to 150kbps, and many more (e.g. 1Mbps). 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

>Back to top      

  Serial Interface

No. of Ports/Type

2 × RS232/422/485 selected by DIP-switch or software


DB-9 male


16kV ESD surge protection

Operating Modes

  • RS232
  • RS422 full duplex              (120Ω on/off)
  • RS485 4 wire, full duplex    (120Ω on/off)
  • RS485 2 wire, half duplex   (120Ω on/off)


One DIP switch sets operating mode and RS422/485 termination
Software can configure the ports individually
No High/Low biasing resistors needed


  • RS422: Tx+/-, Rx+/-, GND
  • RS485 4 wire: Tx+/-, Rx+/-, GND
  • RS485 2 wire: Data+/-, GND

RS485 Data Direction Control

ARTc (Automatic Receive Transmit control)

Data bits

5, 6, 7, 8

Stop bits

1, 2


None, Even, Odd, Mark, Space

Flow Control



  • RS232: 180bps - 921.6/1000kbps
  • RS422: up to 3.7Mbps
  • RS485: up to 3.7Mbps
Supports non-standard baudrates


TxD/RxD for each port

>Back to top      

  Serial Port Expansion


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

Expansion Options

Connect USB-COM Plus (1 port) or USB-2COM Plus (2 ports) devices to add more serial ports to NetCom Plus server, even electrically isolated versions

>Back to top      


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

>Back to top      

  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

>Back to top      


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.

>Back to top      

  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.

>Back to top      

  Wireless interface (option)


2.4GHz Radio, supports IEEE Std. 802.11b/g/n

WLAN Modes

Access Point (AP) or Client (Station)

TX Power

Typ. 15.5dBm ±1.5 dBm @ 1Mbps (DSSS)
Typ. 15.5dBm ±1.5 dBm @ 11Mbps (OFDM)
Typ. 15.6dBm ±1.5 dBm @ 6Mbps (CCK)
Typ. 13.5dBm ±1.5 dBm @ 54Mbps (OFDM)
Typ. 13.4dBm ±1.5 dBm @ 6.5Mbps (OFDM)
Typ. 13.3dBm ±1.5 dBm @ 150 Mbps(OFDM)

RX Sensitivity

-95.6dBm @ 1Mbps, -88dBm @ 11Mbps
-91.3dBm @ 6Mbps, -74.2dBm @ 54 Mbps
-88.8dBm @ 6.5Mbps (20 MHz), -72dBm @ 72.2Mbps (20 MHz)

Transmission Rate

802.11b: 11Mbps
802.11g: 6 to 54Mbps
802.11n: 6.5 to 150Mbps

Transmission Distance

Up to 100m in open areas

Wireless security

  • WEP
  • WPA
  • WPA2
  • WPA2-Enterprise (IEEE 802.1X/RADIUS)

Antenna Connector

RP (Reverse-Polarity) SMA

>Back to top      

  Power Requirements

Input Voltage

9 - 54V DC

Power Consumption

0.25A @ 12V, 2.8W max


3-pin Terminal Block

>Back to top      

  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)

>Back to top      

  Environmental Data

Operating Temp

−20°C - 65°C

Storage Temp

−20°C – 85°C

Ambient Humidity

5-95% non condensing

>Back to top      





  • 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

>Back to top      

  MTBF (Mean Time Between Failures)


40.1 Years @ 25°C
13.3 Years @ 45°C


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

>Back to top      


Warranty Period

2 years

>Back to top      

  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

>Back to top      

  Ordering Information


NetCom Plus 213 (2x RS232/422/485, expandable)

>Back to top      



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


WLAN Kit internal
internal module 802.11b/g/n, pigtail and antenna
Purchase time option, not for later retrofitting


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


WK-NCP Wallmount kit


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


DB9F-to-TB/10 for RS422/485 free wiring option


DB9F-to-RJ45 for changing from DB9 to CAT5 wiring
(Optimised for RS422/485 operating modes)


RJ45-to-DB9M for changing back from CAT5 to DB9 wiring
(Required to match the DB9 pinout at NetCom Plus)


Serial Null-Modem adapter 9PF-9PF, change male to female

>Back to top      


Packing list

  • NetCom Plus Serial Device Server
  • Terminal block for Power Supply

>Back to top      


 (Driver Installer (version   November 2 2018))
 (Driver Installer (version   November 2 2018))
 (Driver Installer (WHQL version   December 10 2007))
 (Release February 2022)
 (Edition: May 2022)
 (Firmware 3.4.8)
 (Firmware version 4.0.3 (June 28 2023), Upgrade from v3.4.8)
>Back to top      

* Specifications are subject to change without notice.
* All trademarks and brands are property of their rightful owners.
Copyright © 2005-2024, VS Vision Systems GmbH. All Rights Reserved.