Introduction - SeaLevel ULTRA COMM+422.PCI User Manual

Introduction

The Sealevel ULTRA COMM+422.PCI is a four channel PCI Bus serial I/O adapter for the PC and
compatibles supporting data rates up to 460.8K bps. RS-422 provides excellent communications for long
distance device connections up to 4000ft., where noise immunity and high data integrity are essential.
Select RS-485 and capture data from multiple peripherals in a RS-485 multi-drop network. In both RS-485
and RS-422 modes, the card works seamlessly with the standard operating system serial driver. In RS-485
mode, our special auto-enable feature allows the RS-485 ports to be viewed by the operating system as a
COM: port. This allows the standard COM: driver to be utilized for RS-485 communications. Our on-board
hardware automatically handles the RS-485 driver enable.
Features
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Compliant with RoHS and WEEE directives
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Each port individually configurable for RS-422 or RS-485
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16C850 buffered UARTs with 128-byte FIFOs (previous releases had the 16C550 UART)
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Data rates to 460.8K bps
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Automatic RS-485 enable/disable
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36" cable terminates to four DB-9M connectors
© Sealevel Systems, Inc. 7402 Manual | SL9063 7/2021
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