Chapter 9: Setup Mode: Channel Configuration

The unit ignores any character sequence received not starting with AT, and only recognizes and processes single AT-style commands. The unit treats compound AT commands as unrecognized commands.

If the Full Verbose option is in effect, the unit responds to an unrecognized command string that is otherwise formatted correctly (begins with AT and ends with carriage return) with the "OK" message and takes no further action.

If the Numeric Response option is in effect, the unit responds to an unrecognized command string that is otherwise formatted correctly with the "0" message and takes no further action.

When an active connection is in effect, the unit transfers data and does not process commands received from the serial interface.

When a connection is terminated or lost, the unit reverts to command mode.

When an active connection is in effect, the unit terminates the connection if it receives the following sequence from the attached serial device:

No serial data is received for one second.

The character sequence +++ is received, with no more than one second between each two characters.

No serial data is received for one second after the last + character. At this time, the unit responds affirmatively per the selected echo/response mode.

The character string ATH is received, terminated with a carriage return. The unit responds affirmatively according to the selected echo/response mode and drops the network connection. The serial interface reverts to accepting command strings.

If this sequence is not followed, the unit remains in data transfer mode.

 

Table 9-7. Modem Mode Commands

 

 

 

 

Modem Mode

 

 

Function

Command

 

 

 

ATDTx.x.x.x,pppp or

 

 

Makes a connection to an IP address (x.x.x.x) and a remote port

ATDTx.x.x.x/pppp

 

 

number (pppp).

 

 

 

 

ATDTx.x.x.x

 

 

Makes a connection to an IP address (x.x.x.x) and the remote port

 

 

number defined within the unit.

 

 

 

 

 

 

 

ATD0.0.0.0

 

 

Forces the unit into Monitor Mode if a remote IP address and port

 

 

number are defined within the unit.

 

 

 

 

 

 

 

ATD

 

 

Forces the unit into Monitor Mode if a remote IP address and port

 

 

number are not defined within the unit.

 

 

 

 

 

 

 

ATDx.x.x.x

 

 

Makes a connection to an IP address (x.x.x.x) and the remote port

 

 

number defined within the unit.

 

 

 

 

 

 

 

ATH

 

 

Hangs up the connection (entered as +++ATH).

 

 

 

 

XPress DR+ User Guide

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Lantronix 900-422 manual Modem Mode Function Command, Modem Mode Commands
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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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