ALLEN BRADLEY 1785-L40B ENHANCED PLC-5 CONTROLLER PLC-5 40 REV X02 READ

Description:

The Allen-Bradley 1785-L40B Enhanced PLC-5 Controller is a programmable logic controller CPU module used in PLC-5 automation systems. Commonly installed in 1771 I/O chassis to execute control logic, manage I/O operations, and coordinate communication across industrial networks. Maintenance teams, OEMs, and system integrators use this processor for replacement, retrofit, and maintaining reliable control in legacy automation systems.

Applications:

The Allen-Bradley 1785-L40B PLC-5 Controller is used in industrial automation systems requiring mid-range control and communication, including manufacturing plants, material handling systems, process control, and machine automation. It is ideal for applications that demand stable PLC performance, reliable I/O processing, and integration with Data Highway Plus and remote I/O networks.

Technical Specifications:

• Brand: Allen-Bradley (Rockwell Automation)
• Part Number: 1785-L40B
• Product Type: PLC CPU Processor Module
• Series: PLC-5/40
• User Memory: Up to 48K words
• I/O Capacity: Up to 2048 I/O points
• Communication Ports:
 – Data Highway Plus (DH+) / Remote I/O
 – Serial port (RS-232/422/423 configurable)
• Maximum I/O Chassis: Multiple local and remote chassis supported
• Mounting Type: Chassis-mounted (1771 I/O rack)
• Programming: Ladder logic
• Application: Industrial automation and control systems

Common Replacements:

• Allen-Bradley 1785-L60B
• Allen-Bradley 1785-L80B
• Allen-Bradley ControlLogix 1756-L61