User Manual

Introduction
Sealevel Systems ULTRA-485 Page 1
Introduction
Overview
The Sealevel Systems ULTRA 485 provides the PC with an additional
RS-422/485 serial port for terminals, PLC communication, laboratory
instrumentation, etc.
The unique feature of the ULTRA 485 is the ability to be RS-485 compatible
without the need for special software or drivers. This is especially useful in
Windows, Windows NT, and OS/2 environments where the lower level I/O
control is abstracted from the application program. Which means that the user
can effectively use the ULTRA 485 in an RS-485 application with existing (i.e.
standard RS-232) software drivers.
What’s Included
The ULTRA 485 is shipped with the following items. If any of these items are
missing or damaged, contact the supplier.
• ULTRA 485 Serial I/O Adapter
• Sealevel Software
Factory Default Settings
The ULTRA 485 factory default settings are as follows:
Port # Base Address IRQ Electrical Specification
Port 1 280 5 RS-485 ‘Auto’
To install the ULTRA 485 using factory default settings, refer to Installation on
page 10.
For your reference, record installed ULTRA 485 settings below:
Port # Base Address IRQ Electrical Specification