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Yokogawa ALR121-S01 Serial Communication Module

ABB CI920N 3BDS014113 Communication Interface for Industrial Automation

Yokogawa ALR121-S01 Serial Communication Module

Name: Yokogawa ALR121-S01 Serial Communication Module
Brand: Yokogawa Electric
SKU: 4311
Availability: InStock
Rating: 5.0 (1 reviews)

Brand:Yokogawa Electric
Item No.:ALR121-S01
Product Origin:Japan
Product Dimensions:126.7 × 32.8 × 130 mm
Product Weight:0.3 kg
Payment:T/T, Western Union, Credit Card
Goods_stock:15
Shipping Port:Xiamen, China
Lead Time:1-3 Days
Condition:Brand New And Original
Warranty:1 Year
Certificate:COO
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Product Details
Product Applications
Product Advantages
Technical FAQs
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Introduction: Reliable Serial Connectivity for Industrial Control

The Yokogawa ALR121-S01 Serial Communication Module is a compact and robust communication interface designed to facilitate dependable data exchange between DCS controllers and field subsystems over serial links. It enables integration of Yokogawa control platforms with external devices using widely accepted serial communication standards. Engineered for industrial automation environments, this module supports flexible network configurations and ensures stable performance even under demanding conditions.

Technical Specifications: Precision Engineering Meets Practical Design

Specification	Details
Product Type	Serial Communication Module
Model Number	ALR121-S01
Communication Interfaces	RS-422 / RS-485
Communication Modes	Point-to-point (RS-422), Multipoint (RS-485)
Transmission Function	Half-duplex start-stop synchronization
Supported Speeds	1200–38400 bps
Transmission Code	ASCII / Binary
Character Length	7/8 bits
Parity	None / Even / Odd
Transmission Distance	Up to 15 m (RS-422), up to 1200 m (RS-485)
Power Supply	24 V DC
Current Consumption	~0.5 A
Dimensions (L × W × H)	approx. 126.7 × 32.8 × 130 mm
Weight	approx. 0.3 kg
Mounting	Rack or DIN rail compatible
Operating Temperature Range	Typically –20 °C to +60 °C

Applications: Bridging Devices Across Industrial Networks

The ALR121-S01 is widely used wherever serial communication is required between control systems and external equipment. Typical applications include process control in oil & gas, refining and petrochemical facilities, power generation, manufacturing automation, and distributed I/O networks. Its ability to support both point-to-point and multipoint topologies makes it versatile for small local links or larger distributed networks.

Advantages: Connectivity Simplified and Strengthened

Multi-protocol serial interfaces (RS-422 and RS-485) for flexible device integration.
Wide communication speed range supports diverse device requirements.
Long-distance capability makes RS-485 ideal for extended field links up to 1200 m.
Compact and industrial-ready design conserves control cabinet space while enduring harsh operating conditions.
Diagnostic indicators and redundancy support enhance uptime and simplify troubleshooting.

These features ensure the ALR121-S01 is both efficient and resilient, helping reduce downtime and improve communication reliability across field networks.

Technical FAQs: Engineering Insights

1. What interfaces does the ALR121-S01 support?
It supports RS-422 and RS-485 serial interfaces.

2. Can it operate over long cable runs?
Yes — RS-485 can support distances up to about 1200 meters depending on speed and wiring.

3. What communication speeds are available?
Transmission speeds from 1200 to 38400 bps are supported.

4. Does it support multiple devices on one network?
Yes — the RS-485 interface allows multipoint (multi-device) configurations.

5. Is the module suitable for harsh environments?
Yes — it is rated for typical industrial temperatures from approximately –20 °C to +60 °C.

6. How is the module powered?
It uses a standard 24 V DC industrial power supply.

7. Does it have diagnostic features?
Yes — LED indicators provide status and fault diagnostics that help with maintenance and fault isolation.

8. What mounting options are available?
It can be installed on a DIN rail or within a rack configuration.

9. Is the communication mode full-duplex?
No — it operates in half-duplex mode, typical for serial field communications.

10. What encoding formats does it support?
Both ASCII and binary transmission codes are supported.

Sales and Business Development

Phone: +8617350837383
E-mail: [email protected]
Skype: +8617350837383
WhatsApp: +8617350837383
Business hours: We Provide Online Support 24/7
Address: Room 1001, Jiuzhou Commercial Building, Xiamen, Fujian Province, China