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© Sealevel Systems, Inc.
7101 Manual | SL9160 9/2021
Introduction
Overview
The Sealevel Systems
ULTRA 530.PCI
is a one channel PCI Bus serial I/O adapter for the PC and
compatibles. It provides one field selectable RS-232/422/485/530 serial port supporting asynchronous
data rates up to 460.8K bps as well as isochronous data rates up to the speed of the supplied clock. Now,
with this card, you can use your standard communications software and connect over a clocked digital
communications line.
Configure the port as RS-232 for standard serial COM: port requirements. Choose the RS-422 mode 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. Up to 31 RS-485
devices can be connected to each port to automate your data collection.
In both RS-232 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. UART upgrades
are available providing 32-, 64- and 128-byte FIFOs.