Home / News / AB 1756-L61 Product Overview

AB 1756-L61 Product Overview

Dec 31, 2025 Allen‑Bradley

1756-L61 is a ControlLogix controller under the Allen-Bradley brand,produced by Rockwell Automation.The following is a detailed introduction to the 1756-L61 controller.

Allen‑Bradley 1756-L61

Basic attributes

Model:1756-L61.

Category:Processor module.

Brand:Allen-Bradley.

Manufacturer:Rockwell Automation.

Technical specifications

Memory

User memory:2MB(otherwise known as fixed memory 2,4 or 8MB,which may vary depending on different configurations).

I/O memory:478KB.

Optional non-volatile storage memory:128MB(using 1784-CF128 CompactFlash memory card).

Communication options

ControlNet.

Data Highway Plus.

EtherNet/IP.

DeviceNet.

SynchLink.

Remote I/O.

Third-party process and device networks.

Serial Communications

Built-in RS-232 serial communications port.

Supported protocols include DF1 full/half duplex,ASCII,DF1 radio modem,Modbus via logic,and DH-485.

I/O Capacity

Maximum digital I/O:128,000 points.

Maximum analog I/O:4,000 points.

Maximum total I/O:128,000 points.

Other Technical Specifications

Controller Tasks:Includes 32 tasks,100 programs per task,and event tasks(all event triggers).

Current Draw:1200mA at 5.1V DC,14mA at 24V DC.

Power Consumption:3.5W.

Heat Dissipation:11.9 BTU/hr.

Isolation Voltage:30V(continuous),tested at 720V DC for 60 seconds.

Operating Temperature:0 to 60 degrees Celsius.

Storage Temperature:-40 to 85 degrees Celsius.

Maximum ambient air temperature:60 degrees Celsius.

Relative humidity:5%to 95%(non-condensing).

Vibration:2g at 10 to 500 Hz.

Operating shock:30g.

Allen‑Bradley 1756-L61

Non-operating shock:50g.

III.Compatibility and Installation

Compatibility:The 1756-L61 controller is compatible with a variety of chassis,including 1756-A4,1756-A7,1756-A10,1756-A13 and 1756-A17.

Installation:The controller is a chassis-based controller and can be placed in any available slot of the 1756 ControlLogix chassis.

Application and Function

Application:The 1756-L61 controller is widely used in industrial automation control systems,such as petrochemical,power,metallurgy,pharmaceutical,food and other industries.

Function

Production line control:It can realize automatic control and monitoring of production lines and improve production efficiency.

Equipment monitoring:It can realize real-time monitoring and diagnosis of the operating status of the equipment,helping enterprises to maintain and service the equipment.

Data collection:It can realize the collection,analysis and storage of production data,providing decision-making support for enterprises.

Allen-Bradley 1756-L61S Processor Module
Allen-Bradley
Featured Product

Allen-Bradley 1756-L61S

Nov 23, 2025

The Allen Bradley 1756-L61S is a versatile processor module designed for both ControlLogix and GuardLogix systems. Part of Rockwell Automation’s renowned line of industrial automation components, it excels in reliability and perf

View Product Details
Buy-Globally

Buy-Globally

Contact Us for Inquiries & Needs

24/7 Online Support

If you have any questions or needs, please feel free to leave a message. Our customer service is online 24 hours a day, and we look forward to serving you.

Quick Response
Expert Advice
Global Support
24/7 Available

Leave a Comment

If you have any questions or needs, please feel free to leave a message
Our customer service is online 24 hours a day, and we look forward to serving you.
  • All comments(0
  • There are no comments yet. Come and post a comment!

Related Articles

EMERSON KJ4001X1-BE1 Bus Circuit Rack Product Introduction
Jan 03, 2026

EMERSON KJ4001X1-BE1 Bus Circuit Rack Product Introduction

The Emerson KJ4001X1-BE1 bus circuit rack is a bus module produced by Emerson for industrial automation control systems. It plays a

View News
FOXBORO FBM217 Product Introduction
Jan 02, 2026

FOXBORO FBM217 Product Introduction

FOXBORO FBM217 is a controller or module of the Foxboro brand.The following is a detailed introduction to it 1.Basic information Br

View News

Need a Custom Automation Solution?

Our team of experts can design and implement a tailored automation system to meet your specific requirements.