Description

Product Overview

The Yokogawa NFLR121-S00 S1 is a high-performance serial communication module designed to bridge the gap between Yokogawa control systems and external field devices. This module features two ports supporting RS-422 and RS-485 standards, enabling seamless data exchange across diverse industrial automation networks.

Robust Multi-Point Connectivity

The NFLR121-S00 S1 provides exceptional flexibility by supporting both half-duplex and full-duplex communication modes. Engineers can utilize this module to establish stable multipoint networks, connecting multiple field instruments or PLC sub-systems to a central DCS. Because the hardware supports transmission distances up to 1200 meters, it effectively handles large-scale facility layouts without requiring frequent signal repeaters. This long-range capability ensures that critical process data remains intact across expansive industrial sites.

Configurable Data Protocols and Synchronization

To ensure compatibility with various third-party hardware, the module employs a start-stop synchronization protocol that handles both ASCII and binary data formats. Users can precisely configure the character length (7 or 8 bits), stop bits (1 or 2), and parity checking (none, even, or odd) to match the requirements of the connected field device. These granular settings minimize data corruption and ensure high-integrity transmissions. Furthermore, the module maintains an efficient power profile, drawing only 500 mA, which reduces the overall heat load within the system cabinet.

Industrial-Grade Reliability

Yokogawa engineered the NFLR121-S00 S1 for continuous operation in demanding environments. Its rugged construction resists electrical noise and interference, which are common in power plants and chemical processing facilities. The “S1” suffix indicates a refined hardware revision that meets modern industrial standards for durability and long-term lifecycle support. By integrating this module into a Yokogawa DCS, operators achieve a reliable, high-speed serial interface that supports both legacy and modern communication tasks.

Technical Characteristics