Introduction; Overview; What's Included; Factory Defaults - Omega Engineering ISA RS-422 User Manual

Overview

The OMG-ULTRA-SIO provides the PC with two additional ground isolated RS-
422/485 (P/N 3189) or two non-isolated RS-422/485 (P/N 3089) serial ports for
terminals, modems, printers, etc. Isolation is important in installations where the
equipment being connected to the PC is either far from the PC, or on a different
power transformer circuit. Ground loop current is a commonly neglected and
misunderstood phenomenon that leads to data loss and the possible destruction
of communications interfaces. The isolated OMG-ULTRA-SIO provides up to
500 volts DC of isolation.

What's Included

The OMG-ULTRA-SIO is shipped with the following items. If any of these items
are missing or damaged, contact the supplier.
OMG-ULTRA-SIO Serial I/O Adapter (P/N 3189 with isolation or
P/N 3089 without isolation)
Software
Factory Default Settings
The OMG-ULTRA-SIO factory default settings are as follows:
Port # Base Address
Port 1 3E8
Port 2 2E8
To install the OMG-ULTRA-SIO using factory default settings, refer to
Installation on page 9.
For your reference, record installed OMG-ULTRA-SIO settings below:
Port # Base Address
OMG-ULTRA-SIO

Introduction

IRQ Electrical Specification
5
10
IRQ Electrical Specification
Introduction
RS-422
RS-422
Page 1