Allen-Bradley CPU Processors – High-Performance PLC Brains for Industrial Automation

Allen-Bradley CPU processors are the central control units within Rockwell Automation’s PLC families, providing the processing power, memory, and connectivity required for modern manufacturing and process control. Designed to handle complex automation tasks with precision, Allen-Bradley CPUs ensure reliable and scalable performance across industries such as automotive, food and beverage, packaging, material handling, and more.

Whether you are deploying ControlLogix, CompactLogix, MicroLogix, or PLC-5 systems, the CPU module is the heart of the operation — executing control logic, managing I/O, and communicating with other devices.

What Is an Allen-Bradley CPU Processor?

An Allen-Bradley CPU (Central Processing Unit) Processor is the “brain” of the PLC system. It executes your ladder logic or structured text programs, processes data from input modules, sends commands to output modules, and communicates with other systems via industrial protocols like EtherNet/IP, DeviceNet, ControlNet, and DH+.

Key functions include:

• Logic Execution – Running user-created programs for machine control.

• I/O Management – Processing signals from sensors and actuators.

• Data Handling – Managing variables, registers, and memory structures.

• Communication – Linking PLCs to HMIs, SCADA, and MES systems.

Popular Allen-Bradley CPU Processor Families

Here’s a breakdown of key CPU processor families and their applications:

1. ControlLogix 5580 CPU Processors

• High-speed processing with gigabit Ethernet ports.

• Ideal for large, complex systems requiring fast I/O updates.

• Supports integrated motion over EtherNet/IP.

• Advanced security features.

Allen-Bradley ControlLogix 5580 Controllers

2. ControlLogix 5570 CPU Processors

• Reliable, high-performance processors for large automation systems.

• Extensive memory capacity for advanced programming.

• Compatible with legacy ControlLogix systems.

• Multiple communication options.

Allen-Bradley ControlLogix 5570 Controllers

3. CompactLogix CPU Processors

• Cost-effective and space-saving.

• Designed for small to mid-sized systems.

• Built-in communication ports and I/O.

• Supports integrated motion in smaller applications.

Allen-Bradley CompactLogix CPUs

4. MicroLogix CPU Processors

• Ideal for small machine control.

• Economical, reliable, and easy to program.

• Available in different bulletin series: 1000, 1100, 1200, 1400, and 1500.

 Allen-Bradley MicroLogix PLCs | 1000, 1100, 1200, 1400, 1500

5. PLC-5 CPU Processors

• Legacy modular PLC system, still in operation worldwide.

• Known for durability and long lifecycle support.

• Suitable for process industries and heavy manufacturing.

Allen-Bradley PLC-5 Programmable Controllers

Why Choose Us for Allen-Bradley CPU Processors

We stock new and genuine Allen-Bradley CPU processors ready to ship worldwide. Our technical team has years of experience supporting industrial automation projects, offering fast delivery, competitive pricing, and expert guidance to ensure you get the right CPU for your application.

FAQ – Allen-Bradley CPU Processors

Q1: How do I choose the right CPU for my Allen-Bradley PLC?
Choose based on application size, required communication protocols, memory needs, and I/O capacity.

Q2: Can I replace my CPU without changing the whole PLC system?
Yes, as long as the new CPU is compatible with your chassis and firmware.

Q3: What’s the difference between ControlLogix and CompactLogix CPUs?
ControlLogix is modular and scalable for large systems; CompactLogix is integrated and cost-effective for smaller applications.

Q4: Do you sell refurbished CPUs?
No — we only sell brand-new, genuine Allen-Bradley processors.