Product Overview

The YOKOGAWA ALR121-SE1 functions as a critical Communication Module, providing a versatile serial interface for connecting the control system to various external devices. This essential YOKOGAWA component is primarily designed to support the RS-232C standard, enabling reliable data exchange with external equipment such as supervisory computers, third-party PLCs, printers, or specialized instruments. The ALR121−SE1 ensures data integrity and protocol conversion, facilitating seamless integration of diverse hardware into the control architecture.

Detailed Technical Specifications of the ALR121−SE1

The YOKOGAWA ALR121-SE1 communication module features dual serial ports for flexible device communication and redundancy.

Serial Communication and Isolation

The RS-232C standard is commonly used for short-distance, point-to-point communication. The ALR121−SE1 processes the serial data stream, managing the protocol stack and physical layer signaling. The module's internal design includes electrical isolation, protecting the control system's backplane from ground loops and electrical noise from external serial devices. This makes the ALR121−SE1 a robust solution for connecting to legacy or specialized serial equipment.

Frequently Asked Questions (FAQ)

Q1: What communication standard does the ALR121−SE1 module support?

A1: The ALR121−SE1 primarily supports the RS-232C serial communication standard.

Q2: How many ports does the ALR121−SE1 module have?

A2: The module typically has two serial ports, allowing it to interface with two separate external devices simultaneously.

Q3: Is the ALR121−SE1 suitable for connecting to fieldbus devices?

A3: No, the ALR121−SE1 is designed for general-purpose serial communication (RS−232C). For protocols like FOUNDATION Fieldbus or PROFIBUS, dedicated modules are required.

Q4: What is your policy if the module has a quality issue upon arrival?

A4: We support a 30-day return window if there are any quality issues with the YOKOGAWA ALR121-SE1 module.