



Introduction
The Yokogawa ANT502‑50 Optical Bus Slave Module is a rugged, high‑speed communication interface designed for optical bus networks within industrial automation systems. As a core component of Yokogawa’s fieldbus and DCS (Distributed Control System) architectures, this slave module delivers reliable data exchange between field devices and centralized controllers. With precision optical isolation and robust engineering, the ANT502‑50 is ideal for applications requiring noise‑immune communication, long‑distance connectivity, and enhanced system robustness. Its design reflects Yokogawa’s commitment to quality, durability, and seamless integration in mission‑critical environments.
Technical Specifications
The table below presents the key technical parameters including physical dimensions and weight:
| Specification | Description |
|---|
| Model | ANT502‑50 Optical Bus Slave Module |
| Module Type | Optical Bus Communication Slave |
| Network Interface | Optical fiber connection |
| Optical Port | Single optical port |
| Supported Protocols | Yokogawa optical bus protocols |
| Isolation | Optical isolation for EMI/RFI protection |
| Mounting | DIN‑rail or panel mount compatible |
| Material | Industrial‑grade housing with corrosion‑resistant finish |
| Operating Temperature | −20°C to +70°C (−4°F to +158°F) |
| Storage Temperature | −40°C to +85°C (−40°F to +185°F) |
| Dimensions (WxHxD) | Approx. 115 × 90 × 60 mm |
| Weight | Approx. 0.55 kg (1.2 lb) |
| Certifications | CE, UL, RoHS compliant |
Applications
The ANT502‑50 Optical Bus Slave Module supports a variety of automation and control system applications:
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Fiber‑based fieldbus data links in distributed control environments
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Remote sensor and actuator data acquisition via optical communication
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Industrial process control in oil & gas, petrochemical, and energy sectors
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Water/wastewater treatment and utility automation networks
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Manufacturing lines requiring galvanic isolation and noise immunity
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Long‑distance communication paths between field devices and gateways
Its optical interface ensures communication remains robust across extended distances without degradation from electromagnetic interference.
Advantages
The ANT502‑50 offers multiple benefits that make it a valuable part of modern automation networks:
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Optical Isolation — Enhances noise immunity and electrical separation for dependable performance.
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High‑Speed Communication — Fiber‑optic interface supports fast, long‑distance data transmission.
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Reliable Industrial Design — Built to endure extreme temperatures, vibration, and electrical noise.
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Flexible Mounting Options — Fits DIN‑rail or panel setups for diverse installation environments.
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Compact and Lightweight — Small form factor saves space in control cabinets.
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Seamless Integration — Works natively with Yokogawa optical bus systems and controllers.
These strengths deliver improved network reliability, reduced maintenance issues, and enhanced signal integrity across the automation infrastructure.