Allen Bradley 1785-L20B PLC-5/20 Processor

Product Introduction

The Allen Bradley 1785-L20B PLC-5/20 Processor is a mid-range programmable logic controller processor designed for industrial automation systems requiring reliable processing power and communication capability. Manufactured by Rockwell Automation and part of the Allen-Bradley PLC-5 controller family, the processor provides dependable control performance for manufacturing and process industries.

The 1785-L20B processor offers 16K Word SRAM memory for ladder logic programs and operational data. It supports up to 512 inputs and 512 outputs, making it suitable for medium-scale automation systems. With built-in Data Highway Plus (DH+) communication and support for DH+ / Remote I/O networks, the processor enables efficient communication between controllers, distributed I/O modules, and supervisory systems.

Product Specifications

Applications

• Manufacturing automation systems, controlling machinery, sensors, and actuators across production lines.

• Process control environments, managing industrial processes that require stable controller performance.

• Material handling systems, coordinating conveyors, robotic equipment, and automated storage systems.

• Distributed control networks, connecting remote I/O modules through DH+ and Remote I/O communication.

• Industrial monitoring systems, collecting operational data for supervisory control platforms.

• Legacy PLC-5 infrastructure, maintaining and expanding existing PLC-5 automation installations.

Advantages

• 16K Word SRAM memory capacity, allowing more complex control programs and logic operations.

• Support for 512 inputs and 512 outputs, enabling control of medium-sized automation systems.

• Integrated Data Highway Plus communication, providing reliable industrial network connectivity.

• Remote I/O compatibility, supporting distributed I/O architectures across large industrial plants.

• Modular PLC-5 architecture, allowing flexible system expansion with additional I/O and communication modules.

• Industrial-grade reliability, designed for continuous operation in demanding automation environments.

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