Allen-Bradley | 1756-L81E | ControlLogix 5580

Product Description: Allen-Bradley 1756-L81E

The Allen-Bradley 1756-L81E is the entry-level model in the ControlLogix 5580 series, offering powerful processing capabilities, embedded Gigabit Ethernet communication, and flexible integration for a wide range of industrial automation applications. It is suitable for control systems that require reliable performance, Ethernet/IP connectivity, and scalable architecture with minimal complexity.

Key Features

• Dual embedded Gigabit Ethernet ports supporting DLR, Linear, and Star topologies
• 5 MB user memory and 2 MB I/O memory
• Supports up to 256 EtherNet/IP nodes and 32 motion axes
• High-speed logic execution for efficient system performance
• USB 2.0 port for programming and diagnostics
• Secure-by-design with digitally signed firmware and role-based access
• Internal energy storage module eliminates battery maintenance
• Compatible with Studio 5000 Logix Designer software

Technical Specifications

• User Memory: 5 MB
• I/O Memory: 2 MB
• Communication Ports:
  • 2 × Embedded Gigabit Ethernet (RJ-45)
  • 1 × USB 2.0 (Type B)
• Max CIP Connections: 256
• Motion Control Support: Up to 32 axes via EtherNet/IP
• Chassis Compatibility: Supports up to 40 modules per chassis
• Security Features: Role-based access control, audit logging, firmware verification
• Operating Temperature: 0°C to 60°C
• Power Consumption: Approx. 5.5W
• Mounting: 1-slot ControlLogix chassis
• Conformal Coated Version: 1756-L81EK

Application Areas

• General machine automation
• Small to medium-sized discrete manufacturing
• Industrial data collection and control systems
• Material handling and warehouse automation
• Cost-sensitive automation projects requiring high reliability

Advantages

• Balanced performance and scalability for a broad range of applications
• Built-in Ethernet ports reduce system complexity and wiring
• Enhanced security features help meet modern industrial cybersecurity standards
• Lower cost entry into the 5580 platform with upgrade path to larger models
• Ideal for OEMs and system integrators seeking performance with value