Specifications

10
RS-232/422/485 2-PORT PCI CARD, OPTO-ISOLATED
2. Introduction
2.1 Overview
The RS-232/422/485 2-Port PCI Card, Opto-Isolated is a
two-channel isolated PCI Bus serial I/O adapter for the
PCs and compatibles. Using a 16850 UART with its
industry-leading 128-byte FIFOs, it provides two field-
selectable RS-232/422/485 serial ports that support data
rates up to 460.8 kbps (RS-422/485).
Configure the PCI Card as RS-232 for standard serial
COM: port requirements. Choose the RS-422 mode for
long-distance device connections up to 5000 ft.
(1524 m), where noise immunity and high data integrity
are essential. Select RS-485 and capture data from
multiple peripherals in an RS-485 multidrop network.
Up to 31 RS-485 devices can be connected to each port
to automate your data collection. You can even mix the
ports in any of the interface combinations to provide
maximum flexibility to your application. Optional DB9
to terminal block adapters (part number IC981) are
available to simplify field-wiring connections.