ALR121-S53

Product Overview

ALR121-S53 is a Yokogawa serial communication module supporting RS-422/RS-485 interfaces with enhanced industrial-grade options and communication features.

Specifications

• Model: ALR121

• Type: Serial Communication Module (RS-422/RS-485, 2 port)

• Suffix Codes:

• -S: Standard type

• 5: No explosion protection

• 3: ISA Standard G3 and temperature rating

Interface & Communication

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

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

• Communication function: Half-duplex

• Synchronization method: Start-stop synchronization

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

• Transmission code: Binary

• Character length: 8 bits (fixed on Modbus slave and subsystem communication)

• Stop bit length: 1 or 2 bits (fixed to 1 bit on subsystem communication)

• Parity check: None, even, or odd

• Lag time after transmission: 1 ms

• Maximum transmission distance: 1200 m (total extended length)

Physical

• Weight: Approx. 0.34 kg

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