Translate to and from
RS-422, RS-485, or
RS-530 for PCs and
other RS-232 devices.
Interface-powered;
plug them right into a
DB9 or DB25 RS-232
serial port.
Run at least as far as
4000 ft. (1219 m) to the
non-RS-232 device.
Non-RS-485 models
support async data
rates up to 19,200 bps.
RS-485 models support
async data rates up to
115,200 bps and as
many as 31 drops.
Some models provide
600-W surge protection.
T
he RS-422, RS-485, and RS-530
interfaces are wonderful.
Devices with these interfaces
support high speeds and very long
distances, and they communicate
very reliably. There’s just one
problem: These interfaces aren’t
native to PCs or to most of today’s
office equipment.
If you want a modular,
inexpensive, compact, and
powerful solution to this dilemma,
look no further. Our Async RS-232
Interface Converters are
designed to plug directly into the
RS-232 serial ports of PCs and
other devices, effectively turning
those ports into RS-422, RS-485, or
RS-530 ports. They don’t require
AC power or batteries; they
operate using just the small
voltage present on the RS-232
data and control leads.
The Converters come in a
variety of models with a variety of
RS-232 and non-RS-232 connect-
ors. (See page 3 for a full listing of
which models have which types
of connectors.) But they can be
considered as three main groups:
The RS-422/530 Group
One group of models (our
product codes IC470A through
Key Features
ASYNC RS-232 INTERFACE CONVERTERS
2/18/2000 #14096
IC473A, IC630A, and IC631A) is
designed to translate between
RS-232 and either RS-422 or the
data signals of RS-530. (These
models loop back the RS-232
control signals and can’t support
the RS-530 control signals.)
They support data rates up to
19,200 bps and non-RS-232
distances up to 4000 ft. (1219 m).
Some of these models have DB25
RS-232 connectors and are
DTE/DCE-switchable; other
models have DB9 RS-232
connectors and are always DCE.
The RS-422/485 Group
The second group of models
(our product codes IC476A-R2
through IC478A-R2, IC620A,
IC623A, and IC624A) is designed
to translate between RS-232 and
RS-422 and 2- or 4-wire RS-485.
These models pass through one
control signal, and can be
configured for various flow-
control options.
They support support data
rates up to 115,200 bps and non-
RS-232 distances up to 9 miles
(14.5 km), but this distance will
depend on the data rate and the
type of cable you’re using. (Call
Black Box Technical Support for
assistance in determining how far
you can run in a given
application.)
These models can support as
many as 31 RS-485 drops. Like the
first group, some of these models
have DB25 RS-232 connectors
and are DTE/DCE-switchable;
other models have DB9 RS-232
connectors and are always DCE.
The RS-422/485 group of models
have built-in Silicon Avalanche
Diodes that protect against
surges up to 600 watts per wire.
The 2-Wire RS-485 Group
The third group of models (our
product codes IC520A and
IC521A) is designed to translate
between RS-232 and 2-wire
RS-485 only. These models loop
back the RS-232 control signals.
They support data rates up to
115,200 bps and as many as
31 RS-485 drops. These models
also support non-RS-232
distances up to 4000 ft. (1219 m).
They all have DB25 RS-232
connectors but are all DCE. Like
the RS-422/485 group, they have
Silicon Avalanche Diodes for
600-watt-per-wire surge
protection.
Black Box Corporation
• 1000 Park Drive • Lawrence, PA 15055-1018 • Tech Support: 724-746-5500 • www.blackbox.com
• e-mail:
[email protected]© 2000. All rights reserved.
Black Box Corporation.
Connect RS-232 to RS-422,
RS-485, or RS-530 without
wasting time, space, or money.
(16 pages)
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