Chapter 2: Overview

TCP Client Mode: LES301A can be configured as a TCP client on TCP/IP network to establish a connection with other applications (server) in the host computer actively. After the connection is established, data can be transmitted between the serial device and the host computer in both directions.

Remote control

 

host

LES301A

Card

reader

LES301A Card

reader

Figure 2-5. TCP Client mode.

UDP Mode: UDP is a faster but non-guaranteed datagram delivery protocol. LES301A can be configured as a UDP mode on TCP/ IP Network to establish a connection using unicast or multicast data from the serial device to one or multiple host computers. The opposite is also true.

Computers

 

 

LES301A

Ethernet

 

 

 

 

 

 

 

 

Serial bus

Display

 

Figure 2-6. UDP mode.

Tunneling Mode: In this mode, a serial connection with two or more LES301A units established sends data over TCP/IP Network. This extends the 50-foot (15-m) RS-232 distance limit.

Ethernet

LES301A

Touchscreen

Serial bus

LES301APLC

Figure 2-7. Tunneling mode.

LES301A user manual

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Black Box RS-232, RS-422, RS-485 user manual Card Reader LES301A Card, Ethernet Serial bus, Touchscreen Serial bus

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.