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Chapter 2: Over view
2. Overview2.1 Introduction
The 1-Port Modbus Hardened Serial Server connect s Modbus networks (RS-232, RS-422, or R S-485) to Ethernet networks,
allowing the Modbus network to become a node on the network. The serial port can be accessed over a LAN/ WAN using Direct
IP Mode connections. Modbus Hardened Serial Server s use 10BASE-T or 100BASE-TX copper network media. The ser vers are built
for use in industrial environments and feature an IP30 approved slim-line DIN-rail-mountable case. The product operates from a
range of DC power supply voltages and features pluggable terminal block power connectors. The Modbus Hardened Serial Server
has one Ethernet port.
Table 2-1. LES431A details.
Part Number Serial Ports Serial Connectors Ethernet Media Ethernet Connector Power
LES431A 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) 3-wire terminal block
2.2 Features
• Single Ethernet connector.
• Multi-interface serial port (RS-232, RS-422, RS-485).
• DB9M and pluggable terminal block serial port connector o ptions.
• All serial ports are software selec table for RS-232, RS-422, or RS-485 2- and 4-wire communication.
• Configuration can be done via network or direct serial connection.
• Slim-line DIN rail or panel mountable.
• Accepts DC power over a wide voltage range.
• Supports 10-/100-Mbps Ethernet with auto-selection and auto MDI/MDI-X.
• LAN and WAN communications.
• Configurable for TCP Client or Server operation.
• 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 Modbus Hardened Serial Ser ver Software.
2.3 What‘s Included
Your package should include the following items. If anything is missing or damaged, contact Black Box Technical Support
at 724-746-5500 or info@blackbox.com.
• 1-Port Modbus Hardened Serial Server module (LES431A).
• A printed quick start guide.
To download this user manual, go to ftp://ftp.blackbox.com/anonymous /manuals/L/LES 431A_USER_rev1.pdf or visit the Black Box
Web site (www.blackbox.com) and enter LES4 31A in the search bar.