Transmit or receive
data through harsh
conditions at speeds
up to 33.6 kbps.
Connect to any
PLC, RTU, or other
industrial equipment.
Mount easily to DIN
rails or flat panels.
Rugged casing and
protected circuitry.
DC powered—no AC
adapters required.
Windows
®
compatible.
Compliant with
telephone systems
around the world.
Y
ou can eliminate the difficulties
often encountered with
installing office-grade modems
in severe environments. Just
connect these pocket modems
to any programmable logic
controller (PLC), remote telemetry
unit (RTU), or other industrial
equipment. The Industrial Pocket
Modems provide the reliability
and features you need to get the
data through!
Choose from General-
Purpose, PLC Self-Dialing, or
RS-422/RS-485 models.
All modems are DC powered,
which means clunky AC adapters
won’t cramp your style. Mount
them to a DIN rail or flat panel.
Generally speaking.
The General-Purpose
Industrial Pocket Modem
(MD3450A) is designed for
electrical enclosures located in
harsh environments. It supports
all AT commands and S-registers,
Their consistent performance and
reliability will redefine industriousness
for industrial modems.
Key Features
INDUSTRIAL POCKET MODEMS
enabling it also to be set up as an
external modem for any PC. Use it
with any telecommunication or
dialup networking software to
establish dialup connections.
When you need a modem
that’s tough enough for some of
the toughest environments, count
on the General-Purpose Industrial
Pocket Modem. It handles the
hazards of Class I, Division 2
(Zone 2) locations, and it operates
in temperature extremes between
-22 to +158°F (-30 to +70°C).
Alarming news that’s good.
In addition to all the features
of the General-Purpose Modem,
the PLC Self-Dialing version
(MD3451A) sports PLC self-dialing
capabilities. It automatically dials
out based upon an alarm using a
PLC coil output.
Once a connection has been
established, the PLC’s system
(programming) port is connected
to the central computer at the
other end of the phone link. At this
time, the PLC may be polled by the
computer as if the computer itself
had originated the call.
When the PLC Self-Dialing
Industrial Modem connects to the
computer, it identifies itself so the
computer can run the appropriate
I/O driver and interrogate the PLC.
The modem works with all brands
and models of PLCs.
Locations that don’t have PLCs
also can originate calls to alert
you to low tank levels,
temperature conditions, or other
alarms—just connect the
appropriate alarm contact to the
modem’s input. When conditions
warrant, the Self-Dialing modem
will dial the pre-stored number
and deliver the ID message to the
computer at the receiving end.
For example, the modem can be
used to report low tank levels with
a level switch.
Black Box Corporation
• 1000 Park Drive • Lawrence, PA 15055-1018 • Tech Support: 724-746-5500 •
www.blackbox.com
•
e-mail: [email protected]
© 2001. All rights reserved.
Black Box Corporation.
05/31/2001
#25663
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