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USB-4COM Plus ISO
(USB-4COM-PRO, USB-4COMi-M, USB-4COMi SI-M)

USB to 4 x RS232/422/485 ports (isolated, DSub-9 male, expandable)

VScom USB-4COM Plus, a quad port USB-to-Serial adapter for RS232/422/485
Features
Specifications
Ordering Information
Drivers & Documentation
Datasheet
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The USB-4COM Plus provides easy serial port expansion over USB 2.0 connecting to high speed RS232 or RS422/485 devices. The device is fully ESD and surge protected, bus powered and accommodated in a ruggedized metal housing. Furthermore, it can operate across a large range of temperature levels to cope with harsh operating conditions. The ISO version is 2.5kV electrically isolated to withstand unbalanced ground loops that arise in hazardous industrial environment. Lastly, both DIN-Rail and wall-mounting options are available.

Flexible Three-Way Serial Ports

The serial ports allow different operating modes — which are easily configured via a single DIP switch — to fully support RS232, RS422 and RS485 protocols. The operating mode of serial ports chosen via DIP switch is either same for all ports or individually for each port by "USBCOM Configuration Utility" software. The differential line termination for RS485 (120Ω) is automatically controlled by choosing the appropriate operating mode. High/Low biasing resistors are not needed; as such, hassle-free usage is guaranteed for the user.
Com Port drivers are available for Windows, Linux and Mac OS X. A configuration tool allows easy access to special Windows driver options.

High Speed and Isolation

USB 2.0 High Speed connection allows serial data rates of up to 12Mbps for RS422/485 and 921.6kbps for RS232. Every non-standard bitrate (e.g. 500kbps) can easily be set up in the range of up to 3.5Mbps.
USB-xCOM Plus adapters are 16kV ESD and surge protected at USB and serial ports interfaces. Additionally, the serial ports are 2.5kV electrically isolated (ISO version only), making them ideal for deployment in harsh industrial environments.

Power and Port Expansion

Multiple USB-xCOM Plus devices can be concatenated via the USB Type A at the rear side, creating up to 32 serial ports. In concatenated configuration, the local power input of each expansion module must be used.
USB-xCOM Plus 4 and 8 ports adapters can also be used to expand the serial ports for NetCom Plus Servers (4 and 8 ports).

Features

  • USB 2.0 to 4 x RS232/422/485
  • High-Speed serial ports 921.6kbps
  • Driver for Windows, Linux, Mac OS X
  • LEDs for Power and TxD/RxD activity
  • ESD protection on USB and serial ports
  • 2.5kV electrical isolation (ISO version only)
  • Bus powered (non-ISO), Self powered (ISO version)
  • Wide range of power input 9 - 54V DC
  • Metal housing
  • 19-inch rack and wall mounts
  • Wide range of operating temperatures

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Specifications
USB Interface
  USB-Input
USB 2.0 High Speed, USB 1.1 compliant
  Connector
USB type B
  Circuits
FTDI FT4232H
Genesys GL850G
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Serial Interface
  No. of Ports/Type
4 x RS232/422/485 configurable by DIP switch and software
  Connector
DB-9 male
  Protection
16kV ESD surge protection
2.5kV Electrical isolation on ISO version
  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)
  Configuration
The single DIP switch at rear side configures all ports in the same operating mode or individually via software:
Windows: using "VScom USB Configurator" Utility
All OS: using Terminal emulation
The operating mode controls termination.
No High/Low biasing resistors needed
  Signals non-ISO
RS232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
RS422: Tx+/-, Rx+/-, GND
RS485 4-wire: Tx+/-, Rx+/-, GND
RS485 2-wire: Data+/-, GND
  Signals ISO
RS232: TxD, RxD, RTS, CTS, GND
RS422: Tx+/-, Rx+/-, GND
RS485 4-wire: Tx+/-, Rx+/-, GND
RS485 2-wire: Data+/-, GND
All signals isolated for 2.5kV
  RS485 Data Direction Control
ARTc (Automatic Receive Transmit control)
  Data Bits
7, 8
  Stop Bits
1, 2
  Parity
None, Even, Odd, Mark, Space
  Flow Control
RTS/CTS, XON/XOFF
  Baudrate
RS232: 180bps - 921.6/1000kbps
RS422: up to 12Mbps
RS485: up to 12Mbps
  LEDs
TxD/RxD for each port
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Serial Port Expansion
  Connector
USB 2.0 High Speed type A, 500mA @5V at rear side
  Expansion Ports
connect USB-xCOM Plus to add more serial ports, also electrically isolated
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Software
  Drivers
Windows 2000 to Windows 10 (x86 and x64)
Windows Server 2000 to 2016 (x86 and x64)
Linux (Kernel 2.6 and later built-in)
Mac OS X
  Installation
The driver is already installed (Linux), or installs by automatic Download after Device connection (Windows).
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Power Requirement
  Input Voltage
5V (USB)
9-54V Dcin
  Power consumption USB-4COM Plus
Bus-powered: 5V 500mA via USB
Self-powered: DCin 9 - 54V, 3W + 3W for Port Expansion
  Power consumption USB-4COM Plus ISO
Bus powered: 5V 600mA via USB
Self powered: DCin 9 - 54V, 5W + 3W for Port Expansion
  Port Expansion
DCin supply is compulsory to support Port Expansion.
  Connector
Bus powered: USB Type B, no external supply
Self powered: 3-Pin Terminal Block
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Housing and Mounting
  Case
0.8mm sheet metal
  Weight
0.9kg, w/h box 1.5kg
  Dimensions
196×147×44 mm³ (W×L×H)
  Packaged
310×192×60 mm³
  Mounting
19-inch Rack
Wall mount
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Environmental Data
  Operating Temp
−25°C - 75°C
  Storage Temp
−30°C – 85°C
  Ambient Humidity
5-95% non condensing
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Standards and Certifications
  Declarations
CE, FCC
  EMI
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
  ESD
EN 61000-4-2 4kV contact 8kV air for
Serial Ports
USB
DCin Power connector
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MTBF (Mean Time Between Failures)
  MTBF non-ISO
39.4 Years @ 25°C
22.7 Years @ 45°C
  MTBF ISO
29.2 Years @ 25°C
13.7 Years @ 45°C
  Standard
Telcordia (Bellcore) Standard; RelCalc. 5.0 BELL-7
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Warranty
  Warranty Period
2 years
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Ordering Information
  609
USB-4COM Plus (4x RS232/422/485, non-isolated, expandable)
  611
USB-4COM Plus ISO (4x RS232/422/485, isolated, expandable)
  6609
USB-4COM Plus 232 (4x RS232, non-isolated, expandable)
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Options
  6031
DC Power supply adapter 12V @ 1A
  663
DB9F-to-TB/5Pins for free wiring option
  6061
DB9F-to-RJ45 for changing from DB9 to CAT5 wiring
(Optimised for RS422/485 operating modes)
  6062
RJ45-to-DB9M for changing back from CAT5 to DB9 wiring
(Required to match the DB9 pinout at USB-xCOM Plus)
  661
Serial Null-Modem adapter 9PF-9PF, change male to female
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Packaging
  Packing list
USB-4COM Plus device
USB 2.0 High-Speed cable
Mounting brackets for 19-inch rack
Wallmount plates
Terminal block for Power Supply
4 rubber feet for table mode
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  * Specifications are subject to change without notice.
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