The Yokogawa NFLR121-S00 S1 is a high-performance serial communication module designed for the FIO (Field network I/O) architecture within Yokogawa’s control systems. This module acts as a critical gateway, allowing for the integration of third-party PLC systems, specialized sensors, and subsystem controllers into the primary DCS network. By supporting dual RS-422 and RS-485 interfaces, the NFLR121-S00 enables reliable multipoint communication across extensive plant environments, ensuring seamless data flow between peripheral field devices and the central controller.
Technical Specifications
| Feature | Specification Details |
| Manufacturer | Yokogawa Electric Corporation |
| Model Number | NFLR121-S00 S1 |
| Interface Standards | RS-422 / RS-485 (Isolated) |
| Communication Mode | Half-duplex or Full-duplex |
| Max Transmission Distance | 1,200 meters |
| Current Consumption | 500 mA (at 5V DC) |
| Data Length | 7 or 8 bits |
| Stop Bits | 1 or 2 bits |
| Dimensions | 3.2 x 14.1 x 13.0 cm |
| Weight | 0.3 kg |
| Origin | Japan |
Core Functional Applications
- Subsystem Integration: Interfacing with motor control centers (MCC) and vibration monitoring systems.
- Third-Party Logic Linking: Connecting Modbus-capable PLCs to the Yokogawa DCS.
- Long-Distance Sensing: Gathering data from remote meteorological stations or tank farm gauges.
- Industrial Networking: Establishing robust RS-485 multipoint networks for localized field controllers.
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