ALR121-S51

Overview

The Yokogawa ALR121-S51 is a dual-port serial communication module designed for RS-422/RS-485 networks, supporting both point-to-point and multipoint communication modes.

Interface Details

• Interface: RS-422/RS-485 (4-wire system)

• Connection Method: Point-to-point (RS-422), Multipoint (RS-485)

Communication Settings

• Communication Function: Half-duplex

• Synchronization Method: Start-stop synchronization

• Transmission Speed: 1200 / 2400 / 4800 / 9600 / 19200 / 38400 bps

Module Information

• Weight: 0.34 kg

Model and Suffix Codes

• Model: ALR121 – Serial Communication Module (RS-422/RS-485, 2 port)

• Suffix Code –S: Standard type

• Suffix Code 5: With no explosion protection

• Suffix Code 1: With ISA standard G3

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