YOKOGAWA F3LC21-1N Multi-link unit
The YOKOGAWA F3LC21-1N is a high-performance Multi-Link Unit (also referred to as a Multi-Link Module) belonging to the FA-M3 (Free Application Micro Controller) series.
It is a specialized communication interface designed to facilitate complex data exchange between multiple controllers or peripheral devices.
1. Introduction
The F3LC21-1N is a core communication module for the Yokogawa FA-M3 and FA-M3V PLC systems. Unlike a standard single-port serial link, the “Multi-Link” designation implies its ability to manage multi-point communication configurations
. It allows the FA-M3 system to interface with other PLCs, HMIs (Human Machine Interfaces), and host computers over a robust industrial network architecture.
2. Technical Parameter Table
Parameter Specification
Manufacturer Yokogawa Electric
Model Number F3LC21-1N
Series FA-M3 / FA-M3V (Vitesse)
Module Type Multi-Link Communication Unit
Interface RS-232-C / RS-422-A / RS-485 (depending on configuration)
Transmission Speed Up to 115.2 kbps (standard)
Mounting Base module slot (FA-M3 Rack)
Weight Approx. 0.12 kg (0.26 lbs)
Current Consumption ~320 mA (Internal 5V DC)
Operating Temp 0 to 55°C
3. Product Advantages and Features
High-Speed Data Exchange: Leverages the FA-M3’s “Vitesse” engine architecture for rapid data throughput, minimizing latency in multi-node networks.
Versatile Protocol Support: Supports the Yokogawa personal computer link protocol, allowing for seamless integration with SCADA and custom software.
System Scalability: Designed to allow multiple FA-M3 racks to share data, enabling the coordination of large-scale industrial processes.
Stable Industrial Design: Features high immunity to electrical noise and a compact, fanless design suitable for DIN-rail mounting within control cabinets.
4. Application Cases
The F3LC21-1N is utilized in environments requiring coordinated automation:
Distributed Control Systems (DCS): Acting as a gateway between local FA-M3 logic and a centralized plant management system.
Large Manufacturing Lines: Synchronizing data between multiple machines (e.g., an assembly line where each station has its own PLC).
Building Automation: Monitoring and controlling HVAC, lighting, and security across large facilities by linking distributed controllers.
Semiconductor Tools: Coordinating high-speed motion and wafer tracking data between different tool modules.
F3LC21-1N
5. Other Models in the Same Series
Yokogawa’s FA-M3 communication family includes several variations based on speed and physical interface:
F3LC11-1F: Standard Personal Computer Link Module (RS-232-C).
F3LC11-2F: RS-422-A / RS-485 Link Module for longer distances.
F3LE11-0T: Ethernet Interface Module (10BASE-T/100BASE-TX).
F3SP21 / F3SP28: CPU Modules that integrate with these link units.
F3RS22-0N: Serial Communication Module (RS-232-C/RS-422).
F3LC21-1N
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