Yokogawa ALR121-S01 Serial Communication Module

Manufacturer：Yokogawa

Product Number：ALR121-S01

Product Type：Serial Communication Module

Origin：Japan

Dimensions：126.7 × 32.8 × 130 mm

Weight：0.3 kg

Frequently Asked Questions (FAQ)

Q1: What communication protocols does the ALR121-S01 support?
A1: It supports FA-M3, Modbus, MELSEC-A, YS (direct and SCIU), SLC500, and PLC-5.

Q2: Does ALR121 support multipoint communication?
A2: Yes, when using RS-485 mode, it supports multipoint communication.

Q3: What is the maximum communication distance supported by the module?
A3: Up to 1200 meters in RS-485 mode.

Q4: Is dual-redundant communication supported?
A4: Yes, by using a pair of identical modules, dual-redundant setup is supported.

Q5: What parity options are available?
A5: None, Even, and Odd parity are supported.

Q6: How many communication definitions are allowed per module?
A6: Each ALR121 supports up to 128 communication definitions and 8 types per FCS.

Q7: Which control stations are compatible with ALR121?
A7: Compatible with AFV, AFS, AFG, and AFF series field control stations.

Q8: How to connect ALR121 to YS instruments?
A8: Connect via RS-485 directly or through SCIU unit to multiple YS instruments.

ALR121-S01 Serial Communication Module Yokogawa

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