ALR121-S01

Overview

The Yokogawa ALR121-S01 is a serial communication module supporting RS-422/RS-485 with fixed 8-bit character length, ideal for Modbus slave and subsystem communication.

Transmission Configuration

• Communication Function: Half-duplex

• Synchronization Method: Start-stop synchronization

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

• Transmission Code: Binary

Data Format

• Character Length: 8 bits (fixed for Modbus slave and subsystem functions)

• Stop Bit Length: 1 or 2 bits (fixed to 1 bit for subsystem function)

• Parity Check: None / even / odd

Response Timing

• Lag Time After Data Transmission: 1 ms

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