Yokogawa ALR121-S51 Serial Communication Module

FAQ

Q1: What communication interfaces does the Yokogawa ALR121 support?
A1: The ALR121 supports RS-422/RS-485 interfaces, allowing point-to-point (RS-422) and multipoint (RS-485) communication.

Q2: What is the maximum transmission speed supported by the ALR121 module?
A2: The maximum transmission speed is 38400 bps, although it may vary depending on the communication function, subsystems, and connection method.

Q3: Can I use the ALR121 module for dual-redundant communication?
A3: Yes, the ALR121 module supports dual-redundant communication when used with identical modules on separate communication ports.

Q4: What is the maximum transmission distance for the ALR121?
A4: The ALR121 supports a maximum transmission distance of 1200 meters (total extended length).

Q5: How many devices can the ALR121 module communicate with simultaneously?
A5: The ALR121 module can communicate with up to 30 stations per port.

Q6: What is the power consumption of the ALR121 module?
A6: The ALR121 module consumes 0.5 A of current.

Q7: What are the supported communication protocols for the ALR121 module?
A7: The ALR121 supports various communication protocols such as Modbus, FA-M3, MELSEC-A, and SLC500, among others.

Q8: What are the dimensions and weight of the ALR121 module?
A8: The ALR121 module has dimensions of 126.7 × 32.8 × 130 mm and weighs 0.3 kg.

ALR121-S51 Serial Communication Module Yokogawa

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