Description

Product Description

The Allen-Bradley 1756-L65 represents a high-capacity processing solution within the Logix5560 controller family. Engineered to manage complex automation tasks, this controller provides a substantial 32 MB of user memory, which allows engineers to implement extensive ladder logic, structured text, and function block diagrams without memory constraints. While it serves as a central intelligence unit for the ControlLogix platform, the module effectively coordinates discrete, drive, motion, and process applications within a single integrated environment.

To ensure high availability and data persistence, the 1756-L65 utilizes a 1756-BA2 energy storage module to maintain volatile memory during power cycles. Furthermore, users can bolster nonvolatile storage by installing a 1756-CF128 CompactFlash card, ensuring that project backups remain secure in the event of long-term power loss. The processor also features an integrated RS-232 serial port, which supports various communication protocols including DF1, DH-485, and Modbus via specialized logic.

Because industrial environments demand rugged hardware, the 1756-L65 features a design that withstands operational temperatures up to 60°C and significant mechanical vibration. It seamlessly integrates into any standard 1756 ControlLogix chassis, where it can communicate with up to 128,000 total I/O points. Although newer 5580 models offer faster clock speeds, the 1756-L65 remains a reliable workhorse for established industrial architectures that require high memory overhead and proven stability.

Technical Specifications

• Manufacturer: Allen-Bradley / Rockwell Automation
• User Memory: 32 Megabytes
• I/O Memory: 478 Kilobytes
• Optional Nonvolatile Storage: 1756-CF128 (128 MB)
• Digital I/O Support (Max): 128,000 points
• Analog I/O Support (Max): 4,000 points
• Current Draw: 1200 mA @ 5.1V DC; 14 mA @ 24V DC
• Thermal Dissipation: 11.9 BTU/hr
• Communication Protocols: EtherNet/IP, ControlNet, DeviceNet, DH+, Remote I/O