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- Yokogawa
- NFLR121
- Serial Communication Module
- Japan
- 130 x 142.9 x 32.8 mm
- 0.3 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Yokogawa NFLR121 is a Serial Communication Module designed for Yokogawa industrial automation and distributed control systems (DCS). It provides reliable serial communication between Yokogawa controllers and external devices such as PLCs, HMIs, intelligent field instruments, analyzers, barcode readers, and other industrial equipment.
The NFLR121 enables efficient data exchange through serial communication interfaces, supporting system integration and interoperability within industrial automation networks. Its compact modular design ensures easy installation and dependable operation in demanding industrial environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Yokogawa |
| Model | NFLR121 |
| Product Type | Serial Communication Module |
| Communication Type | Serial Communication |
| Interface | Serial communication interface (system configuration dependent) |
| Data Transmission | Bidirectional serial data exchange |
| Communication Function | Controller-to-device communication |
| Mounting Method | Rack-mounted |
| System Compatibility | Yokogawa Distributed Control System (DCS) |
| Protection Rating | IP20 |
| Dimensions | 130 × 142.9 × 32.8 mm |
| Weight | 0.3 kg |
Function and Working Principle
The NFLR121 serves as the serial communication interface between Yokogawa controllers and external industrial devices. It receives, transmits, and manages serial data, allowing controllers to exchange information with third-party equipment and intelligent field devices.
The module processes incoming serial data, transfers it to the controller for processing, and sends controller commands back to connected devices through the serial communication interface.
Operating Sequence
- External devices transmit serial data to the NFLR121.
- The module receives and buffers incoming communication.
- Data is transferred to the controller for processing.
- The controller executes the application program.
- Response data is transmitted back to connected devices.
Key Features
- Industrial serial communication interface
- Reliable bidirectional data transmission
- Supports integration with external automation equipment
- High communication stability
- Compact modular construction
- Easy installation and maintenance
- Seamless integration with Yokogawa automation systems
- Designed for continuous industrial operation
System Role
The NFLR121 functions as the serial communication gateway between Yokogawa controllers and external industrial devices, enabling reliable data exchange across automation systems.
Typical System Architecture
PLC / Analyzer / HMI / Instrument → NFLR121 Serial Communication Module → Yokogawa CPU Module → Control System → Field Devices
Industrial Applications
The NFLR121 is commonly used in:
- Oil and gas facilities
- Chemical and petrochemical plants
- Power generation systems
- Water and wastewater treatment
- Manufacturing automation
- Pharmaceutical production
- Food and beverage processing
- Factory automation
- Industrial monitoring systems
- Process control applications
Installation Guidelines
- Install the module in a compatible Yokogawa controller rack.
- Ensure proper backplane connection before system startup.
- Connect serial communication cables according to system requirements.
- Configure communication parameters such as baud rate, parity, and stop bits.
- Verify successful communication during commissioning.
- Periodically inspect communication wiring and terminal connections.
Compatible Components
The NFLR121 is compatible with:
- Yokogawa Autonomous Controller CPU Modules
- Yokogawa Controller Base Units
- Yokogawa Communication Modules
- Yokogawa Digital I/O Modules
- Yokogawa Analog I/O Modules
- Human Machine Interface (HMI) systems
- PLCs supporting serial communication
- Intelligent field instruments and analyzers
Alternative Models
| Model | Description |
|---|---|
| NFLR111 | Serial Communication Module |
| NFLP121 | Ethernet Communication Module |
| NFCP501 | Autonomous Controller CPU Module |
| NFBU200 | Controller Basic Module |
| NFDV151 | Digital Input Module |
Advantages
- Reliable industrial serial communication
- Stable bidirectional data transmission
- Easy integration with external devices
- Compact modular design
- High operational reliability
- Suitable for continuous industrial applications
- Simplified installation and maintenance
- Flexible connectivity for automation systems
Frequently Asked Questions
What is the NFLR121 used for?
It is used to provide serial communication between Yokogawa controllers and external industrial devices such as PLCs, HMIs, analyzers, and intelligent instruments.
What type of communication does the module provide?
The module provides bidirectional serial data communication for industrial automation systems.
Can it connect to third-party equipment?
Yes. It can be used to communicate with compatible third-party industrial devices that support the required serial communication protocol.
How is the module installed?
The NFLR121 is installed in a compatible Yokogawa controller rack and communicates with the controller through the system backplane.
Which industries commonly use the NFLR121?
It is widely used in oil and gas, power generation, chemical processing, water treatment, manufacturing, pharmaceutical production, food processing, and general industrial automation.
Conclusion
The Yokogawa NFLR121 Serial Communication Module is a dependable industrial communication interface designed to enable reliable serial data exchange between Yokogawa control systems and external equipment. With its stable bidirectional communication, modular construction, and seamless integration into Yokogawa distributed control systems, it provides an effective solution for connecting industrial devices across a wide range of automation applications.