PCCOM - Solution Provider for RS232/422/485 Serial Communication
Multi Port Serial Card
Serial - TCP/IP Communication
RS232/422/485 Converter and Repeater
Data Acquisition and Instrument Control
Real - Time Data Collection form any Serial Device


The PC COM RS422/RS485 adapter provides two asynchronous serial communication ports, which enables one computer to communicate with other computers via communication lines, or to link the computer and serial peripheral devices such as serial printers, plotters, etc.

The PC COM RS422/RS485 board can be installed in any IBM PC/XT, PC/AT, PC/386 or hardware compatible system. To accommodate a variety of operating systems seven jumpers permit maximum flexibility of configuration. You may select which interrupt (IRQ2 - IRQ7), I/O address you desire.

The PC COM RS422/RS485 adapter provides signal drivers and receivers which can be set by software of hardware. Since the adapter support differential communication lines, it provides longer and more reliable communica-tion quality than does RS232. The communica-tion speed is up to 56K baud and the maximum transmission distance is up to 4000 ft.

Under the RS422 mode, RTS and CTS are used to provide communication flow control protocol. Under the RS485 mode, only trans-mission and receive signal are used, bothdrivers and receivers can be enabled or disabled by jumper setting or software. This means the RS485 provides a multi-point commu-nication protocol.

The features of the RS422/485 adapter are:
Standard RS422/RS485 serial communication interface.
Maximum of 4000 ft transmission speed.

Up to 56K baud transmission speed.
I/O address selectable.

Interrupt selectable.
RS485 driver and receiver selectable.

DB25 or DB9 Cable
Installation CD
User Manual

Catalog Manual
Application Converter
Drivice Driver Test Tool & Sample Code
Data Acquisition Diagram
Serial Communication Technology UARTs & Line Driver