Chapter 2: Overview

2. Overview

2.1 Introduction

The LES301A Ethernet Serial Server is a gateway between Ethernet (TCP/IP) and RS-232 or RS-485/RS-422 communications. The information transmitted by the LES301A is transparent to both host computers (Ethernet) and devices (RS-232 or RS-485/RS-422). Data coming from the Ethernet (TCP/IP) is sent to the designated RS-232 or RS-485/RS-422 port and data being received from the RS-232 or RS-485/RS-422 port is sent to the Ethernet (TCP/IP) transparently.

In the computer integration manufacturing or industrial automation area, the Ethernet Serial Server is used to directly connect field devices to an Ethernet network. Terminal Server (the main control program that runs in LES301A) transforms whatever data is received from RS-232 or RS-485/RS-422 to a TCP/UDP port, then connects the devices to the Ethernet network via a single application program or multiple application programs.

Many control devices provide the ability to communicate with hosts through RS-232 or RS-485/RS-422; however, RS-232 or RS-485/RS-422 serial communication has its limitations. For example, it is hard to transfer data through a long distance. The LES301A can communicate with a remote device in the Intranet environment or even in the Internet, which increases the communication distance dramatically.

The LES301A has (1) RS-232/RS-485/RS-422 port (software selectable), (1) RJ-45 Ethernet and Watch-Dog Timer etc.

2.2 What’s Included

Your package should contain the following items. If anything is missing or damaged, contact Black Box Tech Support at 724-746-5500 or info@blackbox.com.

LES301A-KIT and LES301AE-KIT:

(1) Ethernet Serial Server

(1) CD-ROM containing configuration utility and this user manual in PDF format

(2) wallmounting screws

(1) printed quick-start guide

(1) power adapter (PS012 for LES301A-KIT); (PS012E for LES301AE-KIT)

(1) 3-pin Phoenix connector

2.3 Hardware Description

LES301A:

(1) Ethernet Serial Server

(1) CD-ROM containing configuration utility and this user manual in PDF format

(1) printed quick-start guide

Optional Accessories:

DIN Rail Kit (LES30X-DR)

DB9 to TB5 Adapter (LES30X-TB5)

Figures 2-1 through 2-3 show the Ethernet Serial Server’s back panel, top panel, and front panel views. Table 2-1 describes its

components.

 

 

 

3-pin male terminal

RJ-45 10-/100-Mbps

 

 

 

 

 

 

 

 

block for power input

 

 

 

 

 

Ethernet port

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reset

button

Figure 2-1. Back panel.

LES301A user manual

724-746-5500 blackbox.com

Page 11

 

 

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Black Box 1-Port 10/100 Device Server, RS-422, RS-232 Overview Introduction, What’s Included, Hardware Description

RS-422, RS-485, 1-Port 10/100 Device Server, RS-232 specifications

The Black Box IC113C and IC175C are part of a series of versatile RS-485 interface converters designed to facilitate reliable data transmission over long distances. RS-485 is a standard defining the electrical characteristics of drivers and receivers for use in serial communications systems, and these specific Black Box converters exemplify the technology's adaptability and robustness.

The IC113C is an RS-485 to RS-232 converter, providing a seamless transition between these two common serial communication protocols. With a compact design, it boasts an operating temperature range of -40 to 85 degrees Celsius, making it suitable for harsh environmental conditions. Its key feature includes the ability to extend the communication distance up to 4,000 feet, which is ideal for industrial applications where devices may be far apart. Additionally, the IC113C includes built-in surge protection, ensuring that the device can withstand electrical noise and spikes, ultimately increasing the system's reliability.

On the other hand, the Black Box IC175C serves as an RS-485 to USB converter, bridging older serial devices with modern USB interfaces. This converter is critical for users wanting to connect legacy equipment to contemporary computing systems. Featuring a plug-and-play design, the IC175C is easy to install with no external power supply required, as it is powered directly through the USB connection. It also supports data rates up to 115.2 Kbps, ensuring fast and efficient data transfer.

Both models employ differential signaling, which enhances noise immunity and allows for greater transmission distances compared to single-ended communication standards. Furthermore, the converters support multiple nodes on the same bus, accommodating a network of devices without requiring complex wiring schemes.

In summary, the Black Box IC113C and IC175C offer essential features that cater to diverse industrial and commercial applications. With their robust construction, extensive operating ranges, and compatibility with various communication protocols, these converters enhance system interoperability and provide durable solutions for long-distance data communication needs. Whether connecting legacy systems or extending communication capabilities, these devices exemplify reliability and efficiency in modern data transmission technologies.