Allen-Bradley 1756-L72 ControlLogix Controller

Allen-Bradley 1756-L72 ControlLogix Processor (ControlLogix 5572) is a high‑performance, modular PLC CPU designed for mid‑ to large‑scale automation within a 1756 backplane. It ships with 4 MB of user memory and about 0.98 MB of dedicated I/O memory to support sizeable control logic and data handling across a ControlLogix chassis. The unit includes a USB 2.0 port (full speed, 12 Mbps) for programming and diagnostics and a built‑in Ethernet port for EtherNet/IP communications and device networking. As part of the 1756 ControlLogix family, it accepts standard 1756 I/O modules and works with Rockwell Automation's backplane architecture to enable scalable, distributed control of machines and processes. Typical applications include automated machinery, packaging lines, and process‑oriented equipment where deterministic cycle times and extensive I/O communication are required. This processor is commonly configured in 1756 racks with compatible power supplies and I/O modules to deliver modular, upgradeable control systems for manufacturing floors.