The Allen-Bradley 1756-L85EP is a ControlLogix® 5580E Process Controller engineered for high-performance industrial automation and advanced process control applications. Designed to handle large, complex control systems, this controller delivers exceptional processing speed, expanded memory capacity, and robust EtherNet/IP connectivity. Built for demanding environments, the 1756-L85EP supports large I/O counts, extensive networking, and advanced control strategies, making it ideal for continuous, batch, and hybrid process applications. It integrates seamlessly with the Rockwell Automation Integrated Architecture®, enabling efficient system design, diagnostics, and lifecycle management through Studio 5000 Logix Designer software. Technical Details Specification Details Manufacturer Allen-Bradley Product Family ControlLogix 5580E Model / Part Number 1756-L85EP Controller Type Process Automation Controller (PAC) User Memory 20 MB Nonvolatile Memory Secure digital storage support EtherNet/IP Ports 1 × Gigabit Ethernet USB Port 1 × USB (programming and diagnostics) Max EtherNet/IP Nodes Up to 300 devices I/O Support ControlLogix 1756 I/O modules Programming Software Studio 5000 Logix Designer Programming Languages Ladder Logic, Structured Text, Function Block, Sequential Function Chart Backplane Compatibility ControlLogix chassis Power Supply Provided via ControlLogix backplane Display Integrated alphanumeric status display Diagnostics Advanced system and network diagnostics Security Supports controller-based security and access control Mounting Chassis-mounted Operating Temperature 0 to 60 °C Storage Temperature −40 to 85 °C Certifications UL, CE, CSA (industrial compliance) Lifecycle Status Active product