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Chapter 2: Overview
2. Overview
2.1 Introduction
The 1-, 2-, and 4-Port Hardened Serial Servers connect serial devices (RS-232, RS-422, or RS-485) to Ethernet networks, allowing the
serial device to become a node on the network. The serial ports can be accessed over a LAN/WAN using Direct IP Mode, Virtual COM
Port, or Paired Mode connections. Hardened Serial Servers use 10BASE-T or 100BASE-TX copper network media.
All models also have an additional copper Ethernet pass-through port. Hardened Serial Servers are built for use in industrial
environments and feature heavy duty metal enclosures that are panel- and DIN-rail mountable. The product operates from a range of DC
power supply voltages and features pluggable terminal block power connectors. The LES424A also has a locking
barrel connector that facilitates redundant power sources.
Table 2-1. Available models.
Part Number
Serial
Ports
Serial Connectors
Ethernet Media
Ethernet
Connector 1
Ethernet
Connector 2
Power
LES421A
1
(1) DB9M and (1) 5-pin terminal block
NOTE: Use either the DB9 or the terminal
block connector, but not both at the
same time.
RJ-45
RJ-45
—
(1) 2-wire terminal block
LES422A
2
(2) DB9M
RJ-45
RJ-45
—
(1) 2-wire terminal block
LES424A
4
(4) DB9M
RJ-45
RJ-45
RJ-45
(1) 3-wire terminal block and (1) locking
barrel connector for redundant power
2.2 Features
• LES421A, LES422A: single Ethernet connector.
• LES424A: (2) Ethernet connectors (Ethernet passthrough ports).
• Multi-interface serial ports (RS-232, RS-422, RS-485).
• LES421A has DB9M and pluggable terminal block serial port connector options.
• LES422A and LES424A have DB9M serial port connectors.
• All serial ports are software selectable for RS-232, RS-422, or RS-485 2- and 4-wire communication.
• Configuration can be done via network or direct serial connection.
• Rugged metal case; DIN rail or panel mountable.
• Accepts DC power over a wide voltage range.
• LES424A has two power connections (pluggable terminal strip and locking barrel connector), which can be used for a
redundant power supply.
• Supports 10-/100-Mbps Ethernet with auto-selection.
• Configurable for TCP Client or Server, or UDP operation.
• Virtual COM port and Paired Mode capabilities.
• Upload firmware over the Ethernet port for future revisions/upgrades.
• Supports Windows XP (32/64 bit), 2003 Server (32/64 bit), Vista (32/64 bit), 2008 Server (32/64 bit), Windows 7 (32/64 bit).
• Configure Ethernet and serial port settings using Hardened Serial Server Software or built-in Web server.
