ILX56-PBM

Overview of Allen Bradley ILX56-PBM

The Allen Bradley ILX56-PBM is a PROFIBUS DPV1 Master/Multi-Slave communication module engineered for seamless integration into ControlLogix systems. This module enables straightforward, high-speed data exchange between Rockwell Automation ControlLogix controllers and PROFIBUS-compatible devices, supporting both DPV0 and DPV1 protocols. In master mode, it supports cyclic I/O data transfer with up to 125 slave devices, handling up to 5000 bytes per cycle. When configured as a multi-slave, the module can emulate up to 10 nodes on a PROFIBUS DP network, increasing network flexibility. The ILX56-PBM stands out for its efficient configuration tools, including a custom Add-On Profile, diagnostic LEDs, a front panel display, and a PROFIBUS DP packet capture utility, all designed to simplify setup and troubleshooting. All required power is derived from the ControlLogix backplane, further simplifying installation and minimizing required wiring.

Key Features of Allen Bradley ILX56-PBM

• Supports PROFIBUS DPV0 and DPV1 Master/Multi-Slave operation
• Transfers up to 5000 bytes of cyclic I/O data with 125 PROFIBUS DP slaves
• Emulates up to 10 nodes when used as a multi-slave
• Offers premier integration tools: Add-On Profile and packet capture utility
• Equipped with diagnostic LEDs and a 4-character alpha display for status
• Single-slot ControlLogix form factor draws power from the chassis
• Rugged RS-485 interface, compliant with EN 50170

Technical Specs of ILX56-PBM

• PROFIBUS Interface: RS-485, max 12 Mbps (auto baud detection)
• Supported Baud Rates: 9.6 kBaud to 12 MBaud
• Max Cyclic Data: 5000 bytes input/output per cycle
• Slave Devices Supported: Up to 125 in master mode
• Node Emulation: Up to 10 in multi-slave mode
• Backplane Power: 450 mA @ 5 VDC
• Diagnostic: LEDs, 4-character alphanumeric display, DIP switches for mode/configuration lock
• Module Size: Standard 1756 single-slot width
• Compliance: EN 50170 (PROFIBUS), EN 61000-4 EMC standards

Applications / Use Case

Allen Bradley ILX56-PBM is ideal for industrial environments where integration between ControlLogix platforms and PROFIBUS networks is essential. Commonly used in sectors such as manufacturing, power generation, water treatment, and process automation, it facilitates the exchange of critical process data between Rockwell Automation systems and both legacy and modern PROFIBUS field devices. The module’s Master/Multi-Slave capability allows facilities to bridge new ControlLogix PLCs with existing PROFIBUS fieldbus architectures, reducing the need for expensive system overhauls. ILX56-PBM is valuable for installations where quick commissioning, high data bandwidth, and reliable diagnostics are required, including use alongside drives, remote I/O, flow meters, and other PROFIBUS-enabled process instruments.

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