ALR121-S00

Overview

The Yokogawa ALR121-S00 is a dual-port serial communication module supporting RS-422 and RS-485 links for field I/O networks.

Model & Suffix Codes

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

• Suffix –S: Standard type

• Suffix 0: No explosion protection

• Suffix 0: ISA Standard G3 compliance

Interface Details

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

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

Cabling & Distance

• Transmission Distance: Maximum 1200 m (total extended length)

• I/O Wiring: Cable with 3-pair shield, AKB161, or AKB162

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