ROSOFT PLX51-PBS
1. Overview
The PLX51-PBS is a PROFIBUS DP Slave‑to‑EtherNet/IP™ gateway designed to enable seamless communication between PROFIBUS DP networks and modern EtherNet/IP control systems. It allows PROFIBUS DP devices to exchange data with EtherNet/IP controllers such as those from Rockwell Automation.
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2. Specifications
- Operating Mode: Functions as a PROFIBUS DP Slave, supporting simulation of 1 to 10 slave nodes (Ident Numbers), or as a single independent slave.
- Data Transfer: Up to 1536 bytes of input/output (I/O) data, a common capacity for PROFIBUS‑to‑EtherNet/IP communication.
- Communication Speed: Supports PROFIBUS DPV0 / DPV1 protocols with various baud rates (e.g., 1.5 Mbps, 12 Mbps).
- Power Supply: 10–36V DC, power consumption approximately 2.04W (at 24V).
- Dimensions: Standard DIN‑rail size (approx. 5.86 x 1.33 x 4.56 inches).
- Temperature Range: -20°C to +70°C.
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3. Key Features
- Two Ethernet Ports: Equipped with dual Ethernet ports supporting DLR (Device Level Ring) topology or acting as an embedded switch, improving network reliability and flexibility.
- DLR Topology Support: Provides network redundancy for enhanced fault tolerance.
- Multi‑Slave Simulation: Simulates up to 10 PROFIBUS DP slave nodes, ideal for mapping multiple PROFIBUS devices to an EtherNet/IP network.
- Packet Capture Tool: Built‑in PROFIBUS DP packet capture for efficient network debugging and troubleshooting.
- Dynamic AOI: Supports dynamic Add‑On Instructions (AOI) for easier integration with Rockwell Automation controllers, reducing programming time.

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4. Structure and Components
- Main Processing Unit: Handles protocol conversion and data mapping.
- Power Supply Module: Provides 10–36V DC input with electrical isolation.
- Dual Ethernet Interfaces: Support DLR ring or point‑to‑point connections.
- PROFIBUS Interface: Connects to the field‑side PROFIBUS DP network.
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5. Application Areas
The PLX51-PBS is ideal for integrating legacy PROFIBUS DP systems with modern EtherNet/IP architectures.
- Factory Automation: Connect existing PROFIBUS field devices (sensors, actuators) to new EtherNet/IP control networks.
- Cross‑System Data Acquisition: Enable communication between devices from different manufacturers or protocols.
- Network Redundancy: Use DLR ring topology to improve system uptime and fault tolerance.
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6. Installation and Maintenance
- Mounting: Standard DIN‑rail installation for industrial cabinets or field enclosures.
- Configuration Tool: Setup and diagnostics via the PLX50 Config Utility, allowing users to configure module settings, connect to Rockwell Automation controllers, and create custom AOIs.
- Safety Note: The device has an Open Type design and must be installed in a suitable enclosure to meet industrial protection requirements (e.g., Class I hazardous or non‑hazardous locations).
- Diagnostics: Built‑in PROFIBUS packet capture tool helps reduce troubleshooting time during commissioning and maintenance.
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