Chapter 1: Specifications

1.3 DB9 Pin Assignments

Table 1-1 shows the LES301A unit’s DB9 connector pin assignments.

Table 1-1. DB9 connector pin assignments.

Pin

RS-232 full-duplex

2-Wire RS-485 half-duplex

RS-422/4-Wire RS-485 full-duplex

 

 

 

 

1

DCD

N/A

N/A

 

 

 

 

2

RXD

N/A

TXD+

 

 

 

 

3

TXD

DATA+

RXD+

 

 

 

 

4

DTR

N/A

N/A

 

 

 

 

5

SG (Signal Ground)

SG (Signal Ground)

SG (Signal Ground)

 

 

 

 

6

DSR

N/A

N/A

 

 

 

 

7

RTS

DATA-

RXD-

 

 

 

 

8

CTS

N/A

TXD-

 

 

 

 

9

N/A

N/A

N/A

 

 

 

 

NOTE: You may need an LES30X-TB5 adapter for RS-485 or RS-422 applications.

1.4 Ethernet Port (RJ-45)

Figure 1-1. RJ-45 connector pinout.

Table 1-2. RJ-45 connector pin assignment.

Pin Assignment

568A Definition

568B Definition

 

 

 

1

Green-White

Orange-White

 

 

 

2

Green

Orange

 

 

 

3

Orange-White

Green-White

 

 

 

4

Blue

Blue

 

 

 

5

Blue-White

Blue-White

 

 

 

6

Orange

Green

 

 

 

7

Brown-White

Brown-White

 

 

 

8

Brown

Brown

 

 

 

You can choose either 568A or 568B pinning. To make a crossover cable, use 568A pinning at one end of a UTP cable and use 568B pinning at the other end of the UTP cable.

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LES301A user manual

 

 

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Black Box RS-422, RS-232 DB9 Pin Assignments, Ethernet Port RJ-45, Shows the LES301A unit’s DB9 connector pin assignments
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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.
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