Allen-Bradley 1771-DRS4 | Allen-Bradley Control Coprocessor

Description The Allen-Bradley 1771-DRS4 is a control coprocessor module featuring a 4 MB static RAM memory expansion, designed to enhance the processing capabilities of legacy automation systems. This module was engineered for high-performance control tasks requiring dedicated memory and auxiliary computation power. Technical Specifications Condition New/Never Used Surplus Brand Allen-Bradley Category PLCs/Machine Control Part Number 1771-DRS4 Subcatecory PC Board PLC/Add-On Board Product Type Control Coprocessor Module Memory 4 MB Static RAM System Compatibility Allen-Bradley 1771 I/O Chassis Module Function Coprocessor with memory expansion Form Factor Rack-mounted PLC module Weight 0.01 lbs Information About 1771-DRS4 The 1771-DRS4 is a discontinued control coprocessor module from Allen-Bradley, developed for use with programmable controller systems that demand extended memory for local logic execution or data processing. It comes equipped with 4 MB of static RAM, enabling high-speed memory access and reduced response times in time-sensitive industrial control applications. Key Features: Type: Control coprocessor with onboard static RAM Memory Capacity: 4 MB of static RAM for expanded local data processing Application: Used to offload control and computation tasks from the primary PLC processor System Compatibility: Designed for 1771 series I/O chassis and legacy Allen-Bradley controllers Form Factor: Slot-based module for rack-mounted PLC systems Status: Discontinued by manufacturer, but still used in legacy systems for extended functionality Industrial Use: Suitable for memory-intensive control applications requiring dedicated processing resources The 1771-DRS4 adds memory and computational support to legacy control systems, ensuring enhanced logic execution and real-time performance in demanding automation environments.