Specifications

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Industrial Solutions
Making the connection to industrial serial devices.
Industrial serial interfaces
Industrial control is a designation for the devices that interface with machinery such as welders, mixers, generators,
lathes, and packaging machines. Although most of today’s IT runs on Ethernet, industrial devices often use an RS-232,
RS-485, or RS-422 serial interface.
RS-232 is a group of electrical, functional, and mechanical specifications for serial interfaces. It transmits data at speeds
up to 115 kbps and over distances up to 15 m, although higher distances can be achieved by using special low-capacitance
cable. Both sync and async binary data transmission fall under RS-232. Although the original RS-232 connector is DB25,
DB9 and RJ-45 connectors are now
common. Also, industrial devices often
use a terminal block instead of a
connector for the RS-232 interface.
RS-232 is somewhat restricted as an
industrial interface because of its
restricted range and because it only
supports point-to-point links.
The RS-422 supports point-to-point
and multidrop applications at distances
of up to 1200 meters. Up to 32 listening
devices can be connected to and
controlled from a single RS-422 port.
RS-485 is similar to RS-422 but supports
multiple commanding devices as well as
multiple listening devices at distances of
up to 1200 meters.
Hardened Media
Converter Switch
(LBH100A-H-ST-12)
Industrial
Ethernet Serial
Server
(LES404A)
Multimode Fiber Optic Cable
2 km
Power
Lathe
Lathe
Scale
Time Clock
RS-232 Cables RS-232 Cables
Ethernet
Network
DIN Rail 12-VDC
Power Supply
(PSD100-R2)
Power
DIN Rail 12-VDC
Power Supply
(PSD100-R2)
Industrial
Ethernet Serial
Server
(LES404A)
CAT5e
Cable
Industrial Ethernet Serial Servers
Access hard-to-reach remote serial equipment as if it were local.
• Control remote serial equipment
across your Ethernet network.
• Slim-line DIN rail box is IP30 rated for
use in dirty environments.
• Support RS-232, RS-422, and RS-485
serial interfaces.
• 4-screw power connector enables
daisychaining of AC or DC power
to multiple servers.
Item Code
Industrial Ethernet Serial Servers
1-Port LES401A
2-Port LES402A
4-Port LES404A
You may also need…
12-VDC DIN-Mount Power Supply PSD100-R2
DIN Rail Serial Converter, Repeaters, and Fiber Driver
Industrial solutions for DIN rail serial connectivity.
Item Code
RS-232↔RS-422/RS-485 DIN Rail Converter with Opto-Isolation
ICD100A
DIN Rail repeaters with Optp-Isolation
RS-422/RS-485 ICD102A
RS-232 ICD103A
DIN Rail RS-232/RS-485↔Fiber Driver
MED100A
• Converter optically isolates and converts
unbalanced half- or full-duplex RS-232
signals to optically isolated and balanced
full-duplex RS-422 or 2-wire half- or 4-wire
full-duplex RS-485.
• Repeaters support speeds to 115.2 kbps.
• Fiber Driver enables any two async serial
devices to communicate half- or full-duplex
over two multimode ST
®
fibers at distances
up to 4 km.
MED100A LES404A
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