The Yokogawa NFLR121-S00 S1 is a dual-port RS-422/RS-485 Serial Communication Module designed for high-reliability data exchange. It supports distances up to 1200m, features configurable parity and synchronization protocols, and ensures seamless integration for CENTUM DCS and PLC systems.
The Yokogawa NFLR121-S00 S1 actively functions as a high-performance Serial Communication Module within the CENTUM series and various PLC architectures. This module provides dual RS-422/RS-485 ports, which allow operators to establish complex multipoint network connections across a plant floor. Because it supports both half-duplex and full-duplex communication modes, the unit offers unparalleled flexibility for bidirectional data exchange. Consequently, engineers can utilize this module to bridge the gap between main control stations and diverse peripheral field devices.
To ensure precise data synchronization, the NFLR121-S00 S1 employs a robust start-stop synchronization protocol. This mechanism actively manages data transmission in both ASCII and binary formats, catering to various legacy and modern industrial standards. Furthermore, the module enhances signal reliability by offering configurable character lengths (7 or 8 bits), adjustable stop bits (1 or 2), and multiple parity check options (None, Even, or Odd). These diagnostic layers effectively detect and mitigate transmission errors before they impact the broader control logic.
The Yokogawa NFLR121-S00 S1 excels in large-scale industrial layouts by supporting reliable data transmission over distances up to 1200 meters. Despite this long-range capability, the module maintains a highly efficient power profile, consuming only 500 mA of current. This low-heat dissipation design contributes to a longer lifecycle for both the module and the surrounding rack components. Additionally, the “S1” designation confirms that this specific revision meets updated industrial standards for ruggedness and signal stability in high-interference environments.
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