NOTE: The serial port console mode cannot be used in a FIPS 140-2 approved mode. The Cryptographic Officer must leave the console string as NULL (the factory default value).

To switch the serial port to console mode, you must first define a console string. When the Serial Device Server receives this string on the serial port, it will automatically switch the port to console mode. To define the console string, use a web browser to access the Serial Device Server internal web pages. After you log in, click I/O Port, and then select the desired port (S1 for the serial port). When you get the I/O Port Settings page, enter any desired character string (for example, xyz) as the Console Mode String. Click Submit to save your string, and then restart the Serial Device Server to make the change take effect.

Alternatively, you can define the console mode string using the console command from TELNET as shown in the following example:

SET PORT S1 CONSTR xyz

Once you are connected in console mode, you can send any of the console commands listed in Chapter

5.Be sure to terminate each console command with a carriage return (ASCII 13) or linefeed (ASCII 10) character.

When you are finished using the console, you can return to the normal port operation by sending the command EXIT followed by a return or linefeed character.

AT Commands

The Serial Device Server allows you to control the serial port using standard AT modem commands. This allows you, for instance, to initiate connections and to switch between console mode and data mode by sending the appropriate commands. These capabilities are similar to the console mode switching described in the previous section, but have the following advantages:

∙Your device can initiate a network connection

∙Operation is compatible with software that uses the AT command set

The drawback, however, is that there is a slight delay when switching from data mode to AT command mode.

NOTE: The AT Command filter cannot be used in a FIPS 140-2 approved mode. The Cryptographic Officer must leave the port filter setting as TRAP (the factory default value).

To use the AT commands, you must first enable this capability using the I/O Port Settings internal web page for the serial port (S1). Change the Port Filter setting to AT in order to enable AT mode on that port and press the Submit button to save the change. You must restart the Serial Device Server to make the change take effect.

You can also use the console to enable the AT capabilities. For example, the command

SET PORT S1 FILTER AT

enables AT capabilities on the serial port.

Note: If you use the AT commands on the serial port, you cannot use SNMP traps or Email alerts or Console Mode for that port.

The AT commands are described in detail in Chapter 5.

Configuring the Serial Device Server

Silex

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Part Number 140-00188-210A

 

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Silex technology SX-500-1402 manual AT Commands, SET Port S1 Filter AT
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SX-500-1402 specifications

The Silex Technology SX-500-1402 is an advanced industrial wireless module designed for seamless integration into various applications requiring high-performance wireless connectivity. This module is particularly renowned for its robust features, making it ideal for use in automation, healthcare, and smart city applications.

One of the main features of the SX-500-1402 is its dual-band Wi-Fi capability, which operates on both 2.4 GHz and 5 GHz frequencies. This not only provides flexibility for different environments but also enhances the overall performance by reducing interference and optimizing data throughput. The module supports Wi-Fi 5 (802.11ac), enabling high-speed data transmission and ensuring reliable connectivity even in crowded environments.

Another key aspect of the SX-500-1402 is its compact size and lightweight design, offering an excellent solution for space-constrained applications. The module features a PCB form factor that facilitates easy integration into diverse devices while minimizing additional footprint.

The SX-500-1402 boasts advanced security features, including WPA3 support, ensuring encryption and secure data transmission across networks. This is a critical requirement for applications in healthcare and finance, where safeguarding sensitive information is paramount. Furthermore, the module supports secure boot and firmware updates, further enhancing its security posture.

In terms of power management, the Silex module is designed for energy efficiency, making it suitable for battery-powered applications. It features various power-saving modes that help to extend battery life without compromising performance, enabling devices to operate for longer periods without frequent recharging.

The SX-500-1402 also integrates seamlessly with diverse host interfaces, such as UART, SPI, and I2C, facilitating easy connectivity to microcontrollers and other devices. This versatility makes it an ideal choice for developers looking to prototype and bring their IoT solutions to market swiftly.

Key specifications of the SX-500-1402 include a maximum data rate of 867 Mbps in the 5 GHz band, operating temperature range from -20 to 70 degrees Celsius, and an extended range due to its MIMO (Multiple Input, Multiple Output) technology, which further enhances performance in environments with obstacles.

In summary, the Silex Technology SX-500-1402 is an exceptional choice for applications requiring reliable, high-speed wireless communication. With its advanced features, robust security measures, and versatile integration options, it stands out as a premier solution in the industrial wireless module landscape.
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