Allen-Bradley 1756-L81E ControlLogix 5580 Controller with 3MB Memory

Allen-Bradley 1756-L81E ControlLogix 5580 Controller with 3MB Memory

Price range: $4,286.37 through $5,075.94

The Allen-Bradley 1756-L81E is a ControlLogix 5580 controller with 3 MB of user memory and an embedded 1 Gbps Gigabit Ethernet port for high-speed motion control. Designed for small-to-medium discrete and process applications, it delivers rapid processing power and execution speed without requiring external Ethernet communication cards. An integrated RJ45 Gigabit Ethernet port supports up to 60 EtherNet/IP nodes and high-performance CIP Motion. It uses an Energy Storage Module for battery-free data retention during power disruptions and integrates directly into Studio 5000 Logix Designer software.

$4,286.37
$4,583.97
$5,075.94
SKU: 1756-L81E Category: Brand:

Description

  • The Allen-Bradley 1756-L81E is a ControlLogix 5580 controller with 3 MB of user memory and an embedded 1 Gbps Gigabit Ethernet port for high-speed motion control.
  • Part Number: 1756-L81E
  • Manufacturer: Allen-Bradley
  • Type: ControlLogix 5580 Controller
  • Series: ControlLogix 1756 Series
  • Application: High-Performance Motion & Digital Control
  • Size // Rating: 3 MB User Memory, 1 Gbps Embedded Ethernet
  • Connection Type: 1 Gbps RJ45 Ethernet / USB / Backplane
  • Compatibility: Allen-Bradley ControlLogix 1756 System

TCI is not an authorized Allen-Bradley distributor.

Documentation

No documentation is available for this product.

Warranty Coverage

This product is backed by a TCI Supply 1 year Warranty.

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Description

The Allen-Bradley 1756-L81E is an entry-tier controller in the ControlLogix 5580 family, engineered to deliver high performance for compact to mid-sized automation systems. Equipped with 3 MB of user memory and an advanced multi-core processing architecture, it accelerates scan times and provides exceptional execution speeds for complex logic, multi-axis motion, and data handling tasks.

A major advantage of the 1756-L81E is its built-in 1 Gbps (10/100/1000 Mbps) Ethernet port, which enables fast, direct communication with field devices, drives, and remote I/O racks. Capable of driving up to 60 EtherNet/IP nodes and executing Integrated Motion over EtherNet/IP (CIP Motion), this embedded interface conserves chassis slot space by eliminating the immediate need for external network bridge modules.

Designed for low maintenance and reliability, the controller replaces conventional lithium batteries with a removable Energy Storage Module (ESM), which saves memory contents to flash storage in the event of power outages. Managed through Studio 5000 Logix Designer software, the 1756-L81E features a front-panel alphanumeric display for real-time status updates and diagnostics. Full Removal and Insertion Under Power (RIUP) allows engineers and maintenance teams to service chassis hardware without bringing down operational systems.

Frequently Asked Questions

What is the primary function of the Allen-Bradley 1756-L81E controller?

The 1756-L81E is a ControlLogix 5580 PAC designed for high-speed motion control, discrete manufacturing, and small-to-medium process automation.

How much user memory does the 1756-L81E provide?

It includes 3 MB of user memory for program logic, tags, and operational data.

How many EtherNet/IP nodes can the embedded Ethernet port support?

The onboard Gigabit Ethernet port supports up to 60 EtherNet/IP nodes.

Does the 1756-L81E support Integrated Motion over EtherNet/IP (CIP Motion)?

Yes. The controller natively supports CIP Motion over its onboard 1 Gbps Ethernet interface for high-precision multi-axis motion applications.

How does the 1756-L81E handle power loss and memory retention?

It uses an Energy Storage Module (ESM) that powers internal flash memory writing during a shutdown, removing the need for lithium backup batteries.

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