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SKU: 1756-L65

Allen-Bradley 1756-L65 ControlLogix 5565 Programmable Automation Controller

The Allen-Bradley 1756-L65 is a high-performance ControlLogix controller offering 32 MB of memory and extensive I/O scalability for complex industrial applications.

Product Overview

The Allen-Bradley 1756-L65 serves as a core processing unit within the ControlLogix automation environment. System integrators deploy this controller to manage complex logic, motion control, and data processing across high-speed industrial applications. Because the processor features 32 MB of memory, it handles large-scale programs and extensive I/O tag databases with significant headroom. Furthermore, the unit integrates seamlessly into existing ControlLogix chassis architectures, providing a reliable foundation for enterprise-level automation strategies.

Technical Specifications

  • Model Identification: 1756-L65
  • Manufacturer: Allen-Bradley (Rockwell Automation)
  • Series: ControlLogix 5565
  • User Memory: 32 MB
  • I/O Memory: 478 KB
  • Nonvolatile Storage: Supports 1756-CF128 CompactFlash
  • Communication Ports: 1 x RS-232 Serial Port
  • Chassis Compatibility: 1756-A4, A7, A10, A13, A17
  • Physical Dimensions: 3.5 x 14 x 14.5 cm
  • Power Dissipation: 3.5 W
  • Operating Temperature: 0 to 60 °C

Operational Capabilities

Allen-Bradley engineered the 1756-L65 to support diverse network protocols, including EtherNet/IP, ControlNet, and DeviceNet, allowing it to act as a central hub for interconnected factory floor devices. By utilizing high-capacity memory, the controller supports up to 128,000 total I/O points, ensuring scalability for even the most demanding manufacturing lines. Maintenance personnel benefit from the modular design, which allows for quick field replacements of the 1756-BA2 lithium battery, thereby ensuring uninterrupted retention of critical logic and system data.

Because this controller operates in environments ranging from extreme heat to high-vibration zones, Rockwell Automation subjected the hardware to rigorous industrial testing. The module maintains stability with a 2 g vibration tolerance and operates effectively in humidity levels up to 95%. Consequently, plant managers rely on the 1756-L65 to minimize unplanned downtime while maintaining precise process control across complex automated machinery.