Chapter 3: Installation and Hardware

Note: Termination resistors (R = 120 Ohm) are used to match impedance of a node to the impedance of the transmission (TX) line. Termination resistors should be placed only at the extreme ends of the data line, and no more than two terminations should be placed in any single segment of an RS-485 network. The termination resistors may not be needed for your application.

Figure 3-5. Termination Resistor for 2-Wire Connection

9-Pin RS-232 to Serial RJ45 Cable (P/N 500-103)

The included Lantronix (P/N 500-103) RJ45-DB9F serial cable assumes you are connecting a typical PC Com port to the XPress DR+ serial port. This cable is pinned to provide full serial line control to an RS232 DTE device. Lantronix offers a comprehensive list of cables and adapters to simplify device connectivity to the XPress DR+. See Appendix B: Lantronix Cables and Adapters for a full listing.

Figure 3-6. Lantronix P/N 500-103 RJ45-DB9F Serial Cable Pinout

8

 

CTS (In)

 

 

 

 

1

 

RTS (Out)

1

 

DCD (In)

 

 

 

 

2

 

DTR (Out)

 

 

 

 

 

 

6

 

DSR (In)

 

 

 

 

 

3

 

TXD

 

 

 

 

 

 

 

2

 

RXD (In)

 

 

 

 

 

4

 

Signal Ground

 

 

 

 

 

 

 

5

 

Signal Ground

 

 

 

 

 

 

5

 

Signal Ground

 

 

 

 

 

 

 

 

3

 

TXD (Out)

 

 

 

 

6

 

RXD

4

 

DTR (Out)

 

 

 

 

7

 

DSR (In )

7

 

RTS (Out)

 

 

 

 

8

 

CTS (In)

DTE, 9-Pin

 

 

 

 

 

 

 

 

XPress DR+

 

Female

 

 

 

 

 

 

 

 

Serial RJ45

XPress DR+ User Guide

22

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Lantronix 900-422 manual Pin RS-232 to Serial RJ45 Cable P/N, DTE, 9-Pin XPress DR+ Female Serial RJ45
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900-422 specifications

The Lantronix 900-422 is a robust industrial device used primarily for remote access and management applications. Known for its reliability and versatility, this product caters to a variety of sectors, including telecommunications, manufacturing, and energy management.

One of the standout features of the Lantronix 900-422 is its ability to provide secure remote management capabilities. With built-in support for secure protocols like SSH and SSL, users can confidently access and control devices over the internet while ensuring data integrity and confidentiality. This security is crucial for applications where sensitive information is transmitted.

The device is equipped with a versatile multi-port serial connectivity option. With support for multiple serial communication protocols, including RS-232 and RS-485, the 900-422 can seamlessly interface with various types of industrial equipment and sensors. This adaptability enhances its usability in diverse environments and tasks, from monitoring weather stations to managing industrial machines.

Another significant characteristic of the Lantronix 900-422 is its compact and rugged design, making it suitable for installation in harsh industrial settings. Its durable exterior is resistant to dust and moisture, ensuring that it maintains performance even in challenging conditions.

The device also features an intuitive web-based interface, simplifying configuration and management. With this graphical user interface, users can quickly set up the device, manage settings, and monitor connected devices, all from a centralized location. This ease of use significantly reduces the time and effort needed for system administrators to maintain their networks.

Additionally, the Lantronix 900-422 is equipped with advanced monitoring and diagnostic tools. Users can track performance metrics and receive alerts for potential issues, enabling proactive maintenance and reducing downtime. The combination of real-time monitoring and remote access capabilities allows organizations to streamline their operations and respond swiftly to any anomalies.

Overall, the Lantronix 900-422 stands out as a reliable solution for remote device access and management. Its blend of security, versatility, and user-friendly features ensures that it meets the diverse needs of modern industrial applications, making it an essential tool for any organization looking to enhance operational efficiency and reliability.
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