1756-L55M24

Overview of Allen-Bradley 1756-L55M24 ControlLogix Processor Module

The Allen-Bradley 1756-L55M24 is a 5562 processor module for the ControlLogix platform, designed for high-performance industrial automation applications. It provides 3.5 MB of battery-backed user memory and supports up to 128,000 total I/O points including digital and analog inputs/outputs. The module supports multiple programming languages and communication protocols to integrate with various ControlLogix chassis and networks.

Key Features of 1756-L55M24

• User memory of 3.5 MB battery-backed RAM with optional CompactFlash for non-volatile storage.
• Supports large program sizes and I/O counts: up to 128,000 maximum I/O points.
• Program scan times as fast as 0.08 milliseconds per K instructions.
• Supports programming languages: Ladder Logic, Structured Text, Function Block, and Sequential Function Chart (SFC).
• Integrated RS-232 serial port supporting multiple protocols, including DF1 and Modbus.
• Compatible with multiple ControlLogix chassis models (1756-A4, A7, A10, A13, A17).
• Supports multiple communication protocols including EtherNet/IP, ControlNet, DeviceNet, DH+, and Remote I/O through separate communication modules.
• Operating temperature range: 0 to 60°C (32 to 140°F).
• Backplane current draw: 1.25 A at 5.1 V DC, 14 mA at 24 V DC.
• Power dissipation: 5.7 W.
• Weight approximately 0.32 kg (0.7 lb).
• Dimensions fit standard ControlLogix module slots with 1-slot width.

Technical Specifications

Applications / Use Cases

The 1756-L55M24 is suitable for industries requiring robust, high-speed, and high-capacity programmable automation controllers. It is commonly used in manufacturing, processing, packaging, and other complex automated systems. The module supports extensive control logic and numerous I/O points, fitting well in large-scale distributed control systems.