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> 800I UPCI (4441)

Main Features

  • Universal PCI 3.3 / 5.0V
  • 8x RS232, RS422/485
  • RS485 ART (Automatic Receive Transmit control)
  • RS485 in 6 operation modes
  • surge protection
  • PCI Plug and Play
  • IRQ Interrupt sharing, only one Interrupt per card
  • Drivers for Windows 95 to 7/2008 R2
  • Software compatibel with DOS, Windows 3.11, OS/2, Linux and div. Unix
  • Compact board size (half-size)
  • Hardware flow control
  • Built-in termination resistors

VScom 800I UPCI, a 8 Port RS232, RS422/485 PCI card


VScom 800I UPCI

Quick Link: | Main Features | More Pictures | Overview | Hardware | Interface | Performance | Configuration | Available modes | Power and Environment | Operating Systems | Ordering Information | Packaging | Download |


  More Pictures

VScom 800I UPCI, a 8 Port RS232, RS422/485 PCI card
Click on the thumbnails to enlarge them …

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The VScom 800I uPCI is designed for RS232, RS422/485 industrial communication. It supports 8 independent RS232, RS422 or RS485 ports. Each port can be configured separate.
Available modes : RS232, RS422 fullduplex
RS485 full duplex (4 wire)
RS485 half duplex (2 wire) with and without echo.

In RS485 modes applications enable transmission by simply sending data.
This is done by ART (Automatic Receive Transmit Control) intelligence.
The Transmitter is disabled exactly with the end of the last character sent. No modification is necessary in programs. The common control by RTS is possible for compatibility.
In addition, hardware flow control and built-in termination resistors guarantee data integrity.
Surge protection is also available for RS232 Signals to deliver high reliability.
All of these features make VScom 800I uPCI suitable for harsh industrial applications.

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I/O controller

8x 16C550C or compatible, each with 16 bytes Tx/Rx FIFO

Connector type

1x DB78 female, Cable 8 x DB9 male

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Bus interface

PCI version 2.1 (32bit) Universal PCI 3.3V / 5.0V

Serial interface

RS232, RS422 / 485

No. of ports



RS422 TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND
RS485 Data+/-, GND

RS485 data control

ART (Automatic Receive Transmit control)
By RTS alternatively

Built-in termination resistor

RS422 120 Ohm
RS485 120 Ohm, jumper enable / disable

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up to 921.6Kbps

Max. no. of ports


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None, even, odd, space, mark

Data bits

5, 6, 7, 8

Stop bits

1, 1.5, 2


Assigned by System

I/O address

Assigned by System

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  Available modes


full duplex


full duplex


4 wire , full duplex


2 wire, half duplex, with echo


2 wire, half duplex, without echo

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  Power and Environment

Power requirement

430mA max.(+5V)

Operation temp.

0°C - 55°C


135mm x 100mm

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  Operating Systems

Windows 2000 up to 7

VScom high performance serial driver, x86 and x64 Editions

Server 2000 to 2008 R2

VScom high performance serial driver, x86 and x64 Editions

Windows NT 4.0

VScom high performance serial driver
control panel applet

Windows 95, 98, SE, ME

VScom high performance serial driver


virtuell address driver and compatibility tools
real DOS Com port emulation


Supported by COM16 driver in recent system releases
Third party serial driver SIO.SYS available


Kernel 2.6 and up: built-in support
Previous kernel: VScom high performance real tty driver


configuration instructions

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  Ordering Information


VScom 800I UPCI

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Packing list

VScom 800I UPCI card
Cable 8 x DB9 male
CD, English documentation

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 (Release (January 29 2013))
 (Release 3.1.2 (July 20 2007))
 (Release 3.1.2 (July 20 2007))
 (Release 3.1.2 (July 20 2007))
 (Release 3.1.2 (July 20 2007), PnP)
 (Release 3.1.2 (July 20 2007))
 (Manual for the industrial boards, Edition July 2011)
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* Specifications are subject to change without notice.
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