ControlLogix L8

The premier high-end PLC / PAC


The Allen-Bradley ControlLogix 5580 (L8) series by Rockwell Automation represents a significant advancement in programmable logic controllers (PLCs), offering enhanced performance, memory, scalability, and integrated safety features. Designed for complex and high-speed applications, the L8 series is ideal for large-scale manufacturing operations. The ability to choose the preferred programming language allows the best solution for the application, whether combinational, process, sequence or fast-execution text.

Programming Features and Benefits:

  • Enhanced Performance: The L8 controllers provide up to 45% more capacity compared to previous models, enabling the handling of more complex processes and reducing the need for additional controllers.
  • Integrated Safety: The L8 series includes scalable safety solutions, achieving SIL2/PLd or SIL3/PLe performance. This integration streamlines system design and reduces the need for separate safety controllers.
  • High-Speed Communication: Equipped with a 1 gigabit (Gb) embedded Ethernet port, the L8 controllers facilitate high-speed I/O and motion control, enhancing system responsiveness and data throughput.
  • Advanced Diagnostics: The controllers offer enhanced diagnostics and troubleshooting capabilities, allowing for quicker identification and resolution of issues, thereby minimizing downtime.
  • Programming Languages: The L8 series supports multiple programming languages to provide the right tool for the application, including:
    • Relay Ladder,
    • Structured Text,
    • Function Block Diagram, and
    • Sequential Function Chart (SFC),

CPU Models in the L8 Series:

The ControlLogix 5580 series includes several CPU models, each tailored to specific application needs.

  • 1756-L81: This model offers 3 MB of user memory and is suitable for standard applications requiring high performance.
  • 1756-L82: Featuring 5 MB of user memory, this controller is designed for applications with higher memory demands.
  • 1756-L83: With 10 MB of user memory, this model is ideal for more complex applications requiring substantial processing power.
  • 1756-L84: Big enough for most applications, L84 offers a whopping 20MB.
  • 1756-L85: This high-performance controller offers 40 MB of user memory and is optimized for large-scale, high-speed applications.

Each model in the L8 series is designed to provide robust performance, scalability, and integrated safety features, making them suitable for a wide range of industrial automation applications.

For more information, find our ControlLogix Page here

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