What Is the ControlLogix CPU?

The Allen-Bradley ControlLogix CPU, developed by Rockwell Automation, is a high-performance controller designed for large, demanding industrial automation systems. As the core of the ControlLogix platform, the CPU handles advanced logic, motion control, process automation, and networking—making it ideal for enterprise-level applications.

When you need speed, reliability, and seamless integration, the ControlLogix processor stands out as the top-tier choice in the Allen-Bradley Logix family.

Key Features of ControlLogix CPUs

• ✅ Multi-discipline control (motion, process, discrete, safety)

• ✅ High-speed data processing and real-time performance

• ✅ Redundancy support for critical applications

• ✅ Integrated communication modules (EtherNet/IP, ControlNet, DeviceNet)

• ✅ Scalable memory and I/O options

• ✅ Compatible with Studio 5000 for programming and diagnostics

Popular ControlLogix CPU Models

Allen-Bradley offers a range of ControlLogix CPU models, including:

🔹 1756-L71 / L72 / L73 / L75

High-performance CPUs with varying memory capacities for standard applications.

🔹 1756-L85E

Advanced CPU with embedded EtherNet/IP, optimized for large-scale automation and motion control.

🔹 1756-L81E Series

The latest ControlLogix 5580 controllers, offering faster performance and enhanced security.

Each model supports various levels of processing speed, network capacity, and memory, allowing you to tailor your control system to your exact needs.

ControlLogix vs CompactLogix

Both the ControlLogix and CompactLogix platforms are built on the Logix architecture and use Studio 5000 for development. However, ControlLogix CPUs are engineered for:

• Large-scale applications

• Redundant systems

• High-speed and high-volume I/O

• Complex motion and process control

For systems requiring power, flexibility, and reliability, ControlLogix is the go-to solution.

Industrial Applications of ControlLogix

ControlLogix CPUs are used in industries that demand top-tier automation performance, such as:

• Oil & Gas: Pipeline and drilling automation

• Automotive: Robotic assembly lines

• Utilities & Energy: Power generation and distribution

• Pharmaceutical: Compliance-driven process control

• Metals & Mining: Safety and equipment control

• Water/Wastewater: Redundant system control for treatment plants

Integration with Rockwell Automation Systems

The ControlLogix platform integrates seamlessly with:

• PowerFlex drives

• PanelView HMIs

• FactoryTalk software

• Allen-Bradley I/O modules

Through EtherNet/IP, these components communicate in real-time, reducing configuration time and increasing system reliability.

Where to Buy ControlLogix CPUs

At DDPARTS SOLUTION, we supply a wide selection of Allen-Bradley ControlLogix CPUs, including hard-to-find and discontinued models. Whether you’re building a new system or replacing a critical component, we ship globally and offer expert support to help you choose the right CPU for your setup.

Final Thoughts

If you’re looking for a high-performance automation controller, the Allen-Bradley ControlLogix CPU offers the reliability, scalability, and speed needed to power complex industrial systems. From large-scale manufacturing to safety-critical applications, ControlLogix continues to be a trusted solution across the globe.

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