Allen-Bradley 1768-L43 CompactLogix Processor Module

Description

The Allen-Bradley 1768-L43 is a high-performance programmable automation controller within the CompactLogix family, specifically engineered to deliver robust computational execution for machine control and motion applications. This processing unit features a dual-backplane architecture that simultaneously hosts both 1768 high-speed communication or motion modules and 1769 Compact I/O modules, providing flexible and integrated platform scaling. Outfitted with 2 MB of built-in nonvolatile user memory, the device coordinates complex ladder logic, structured text, function block, and sequential function chart programming structures. Industrial communication loops are supported through an integrated RS-232 serial port alongside flexible expansion options for EtherNet/IP, ControlNet, and DeviceNet networking, enabling seamless connection paths to field arrays, human-machine interfaces, and enterprise networks.

Features

• Utilizes a dual-backplane layout supporting up to two 1768 modules and sixteen 1769 modules.
• Includes 2 MB of standard built-in user memory for dense control logic and application execution.
• Provides a built-in non-isolated RS-232 serial communication port supporting DF1 and ASCII protocols.
• Features a standard power supply distance rating of 4 modules to optimize system stability.
• Supports versatile programming tasks via Relay Ladder, Structured Text, Function Block, and Sequential Function Chart languages.

Applications

• Multi-axis synchronized motion control and precision robotic position paths.
• Assembly and packaging line machinery requiring fast local and distributed I/O execution.
• Plant process orchestration loops featuring multi-network plant communication topologies.

Technical Specifications

Installation Guidelines

• Mount the device directly onto a clean industrial DIN rail assembly or secure it onto an internal enclosure panel using the dedicated mounting holes.
• Position the processing module within a maximum distance of 4 module slots from the system's matching 1768 power supply unit.
• Place all high-speed 1768 expansion, motion, or communication modules directly between the power supply and the controller body.
• Attach local 1769 I/O modules to the right side of the 1768 backplane structure, ensuring that any extra I/O banks use their own dedicated power supply units.