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A-B 1756-L71 Product Introduction

Nov 28, 2025 Allen‑Bradley

A-B 1756-L71 combines the reliability of a programmable logic controller(PLC)with the powerful functions of an industrial computer,providing users with a higher level of control and monitoring capabilities.It is widely used in industrial automation and control systems,showing high reliability and flexibility,and is the preferred choice for project upgrades and new equipment.

A-B 1756-L71

Main Features

High-performance processor

Equipped with a high-performance processor,it can quickly execute complex control algorithms and data processing tasks to ensure that the system responds quickly and accurately.

Rich I/O interface

Provides a variety of input/output(I/O)interfaces,supports a variety of signal types,including digital signals,analog signals,etc.,and can easily connect various sensors,actuators and external devices to achieve comprehensive data acquisition and control.

Powerful programming and configuration capabilities

Supports multiple programming languages,such as ladder diagrams,function block diagrams,structured text,etc.,to facilitate users to program and configure according to actual needs.

It provides an intuitive user interface and powerful debugging tools,making the programming and debugging process more convenient and efficient.

Network communication function

Built-in network communication module supports multiple communication protocols,such as Ethernet,Modbus,etc.,and can exchange and communicate real-time data with other devices,host computers or remote terminals to realize distributed control systems and remote monitoring functions.

High reliability and stability

It adopts industrial-grade design and manufacturing standards,has excellent anti-interference ability and stability,can operate stably for a long time in harsh industrial environments,and ensure the continuity and reliability of the production process.

Scalability and flexibility

Support modular design,users can add or remove functional modules according to actual needs to meet control needs of different scales and complexities.

Provides a wealth of options and accessories to further enhance its flexibility and adaptability.

A-B 1756-L71

Technical Specifications

Brand:Allen-Bradley(Rockwell Automation)

Model:1756-L71

Processor type:High-performance processor

Memory:2 MB of user storage memory and 0.98 MB of I/O memory

Communication interface:Supports multiple communication protocols such as ControlNet,DeviceNet,Remote I/O Data Highway Plus,EtherNet/IP,etc.

Display:Onboard 4-character alphanumeric display for monitoring runtime information and controller diagnostics

USB port:One full-speed USB port for programming,configuration,firmware updates,and online editing

Redundancy support:Supports controller redundancy to improve system availability

Application areas

A-B 1756-L71 is suitable for various industrial automation and control system applications,such as manufacturing,chemical,petroleum,natural gas,electricity,etc.In these fields,it serves as a core controller responsible for monitoring and controlling various industrial processes and machine equipment,helping users achieve efficient and precise control tasks,and improving production efficiency and product quality.

Allen-Bradley 1756-L71 ControlLogix Processor Module
Allen-Bradley
Featured Product

Allen-Bradley 1756-L71

Nov 26, 2025

Overview Allen Bradley 1756-L71 is a ControlLogix processor module, specifically a Logix5571 processor with 2 MB of user memory. It belongs to Rockwell Automation’s extensive line of programmable logic controllers (PLCs) for industrial au

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