Reliable Dual-Port Serial Interface for Industrial Automation Networks
The Yokogawa NFLR121-S00 Serial Communication Module is a high-reliability communication interface designed for STARDOM FCN autonomous controllers and Yokogawa distributed control systems. It enables stable serial data exchange between controllers and external devices such as PLCs, instrumentation, and third-party control equipment.
With dual RS-422/RS-485 ports and strong noise immunity, this module is built for long-distance communication in harsh industrial environments, ensuring consistent and deterministic data transmission.
Technical Specifications
| Parameter | Details |
|---|
| Model | NFLR121-S00 |
| Product Type | Serial Communication Module |
| Communication Interface | RS-422 / RS-485 (dual ports) |
| Number of Ports | 2 channels |
| Communication Mode | Half-duplex / multipoint support |
| Baud Rate | 0.3 kbps – 115.2 kbps |
| Transmission Code | ASCII / Binary |
| Character Format | 7 or 8 bits |
| Parity | None / Even / Odd |
| Stop Bits | 1 or 2 bits |
| Maximum Distance | Up to 1200 m (total system length) |
| Connector Type | D-sub 9-pin + terminal block |
| Current Consumption | Approx. 500 mA |
| Weight | Approx. 0.3 kg |
| Operating Temperature | -10°C to +55°C |
| Storage Temperature | -25°C to +70°C |
| Mounting | Modular rack / FCN system slot |
Application Areas
The NFLR121-S00 is widely used in industrial automation systems requiring stable serial communication:
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Oil & gas production and pipeline monitoring
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Petrochemical and chemical processing plants
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Power generation and energy management systems
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Water and wastewater treatment facilities
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Factory automation and process control systems
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SCADA and distributed controller networks
It is especially effective in long-distance, multi-drop communication environments.
Key Advantages
The NFLR121-S00 delivers high communication stability, strong noise resistance, and flexible protocol handling, making it ideal for industrial-grade serial networking. Its dual-port design allows simultaneous or independent communication paths, improving system flexibility.
With support for RS-422 and RS-485, it enables both point-to-point and multipoint configurations, reducing wiring complexity in large-scale installations. The module also maintains reliable performance in electrically noisy environments, ensuring data integrity over long distances.
Its compact modular design allows easy integration into Yokogawa FCN/STARDOM systems, supporting scalable and maintainable automation architectures.
Technical FAQs
1. What is the main function of this module?
It enables serial communication between controllers and external industrial devices.
2. What interfaces does it support?
RS-422 and RS-485 communication interfaces.
3. How many ports does it have?
It has 2 serial communication ports.
4. What is the maximum communication distance?
Up to 1200 meters depending on wiring configuration.
5. Is it suitable for multipoint networks?
Yes, it supports multipoint RS-485 communication.
6. What is the communication speed range?
0.3 kbps to 115.2 kbps.
7. What systems is it compatible with?
Yokogawa STARDOM FCN and FCN-RTU systems.
8. What industries use it most?
Oil & gas, chemical, power generation, and utilities.
9. What is its key advantage?
Reliable long-distance serial communication with strong noise immunity.
10. Is it suitable for harsh environments?
Yes, it is designed for industrial-grade temperature and electrical conditions.
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