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Allen-Bradley 1756-PLS ControlLogix Programmable Limit Switch module.

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Allen-Bradley 1756-PLS

by Allen-Bradley

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OverviewThe Allen-Bradley 1756-PLS is a sophisticated programmable limit switch (PLS) module designed for demanding motion control and real-time synchronization within the ControlLogix system. This robust three-slot module incorporates a resolver interface, providing exceptional real-time responsiveness through accurate position feedback. Featuring four groups of four configurable inputs and outputs, the 1756-PLS is an ideal solution for achieving tight coordination between machine movement and discrete outputs with remarkable microsecond-level accuracy. Whether your application involves intricate rotary indexing, high-speed packaging, precise labeling, or rigorous press operations, the 1756-PLS enhances performance and throughput. Its advanced capabilities make it an essential component for industries where exact timing and reliable control are paramount.Key Features Advanced Programmable Limit Switch (PLS) Technology: Offers superior control for high-speed industrial processes. Seamless ControlLogix Integration: Designed for full compatibility and integration within the Allen-Bradley ControlLogix architecture, simplifying setup and operation. Precision Resolver Interface: Utilizes resolver-based position feedback for ultra-accurate and dependable motion sensing. Configurable 4x4 I/O Groups: Provides four groups of four inputs and outputs (16 total inputs and 16 total outputs) for versatile application control. Microsecond-Level Output Response: Ensures exceptionally fast and precise output timing, crucial for demanding synchronous operations. Compact 3-Slot Module Design: Optimizes cabinet space within your ControlLogix chassis without compromising functionality. Software Configurable: Allows for custom limit switch profiles and easy adjustments to meet specific application requirements. Technical Specifications Model: 1756-PLS Platform: Allen-Bradley ControlLogix Module Type: Programmable Limit Switch (PLS) Inputs/Outputs: 4 groups × 4 channels each (16 inputs, 16 outputs) Feedback Type: Resolver interface Slot Width: 3 standard ControlLogix slots Connectors: Three 20-pin interfaces Mounting: ControlLogix chassis Operating Temperature: 0°C to +60°C Certifications: UL, CE, c-UL Response Time: Microsecond-level precision for output events. Applications High-Speed Packaging Equipment: Achieve perfect output synchronization with rotary motion for efficient and consistent packaging. Labeling & Printing Machines: Implement precise cut, mark, or apply control based on exact product position for superior quality. Stamping & Press Automation: Drive limit switch logic with unparalleled accuracy based on shaft position for enhanced safety and productivity. Motion-Based Triggers: Utilize rotary encoder or resolver-based precision control for a wide array of industrial triggers. Robotics and Automation: Integrate into complex robotic systems requiring accurate positional feedback and synchronized actions. Material Handling Systems: Optimize conveyor and sorting systems with precise position-based control. Why ChooseExperience unmatched precision with ultra-fast and exceptionally accurate response times, driven by dependable resolver position feedback. Benefit from highly flexible and programmable I/O logic, adaptable to specific position or machine cycle requirements. This module is engineered for high-performance motion control environments, maximizing your operational efficiency. Enjoy the benefits of full integration within the ubiquitous Allen-Bradley ControlLogix architecture, simplifying installation and configuration. The Allen-Bradley 1756-PLS is a globally recognized product, ensuring readily accessible spare parts and technical support. Built to Allen-Bradley's stringent quality standards, it offers long-term reliability and performance in demanding industrial settings.Order NowEnhance your industrial automation with the precise control of the Allen-Bradley 1756-PLS. Contact Palm Parts Solution today to order or learn more about how this advanced module can optimize your operations.FAQWhat is the Allen-Bradley 1756-PLS?The 1756-PLS is a programmable limit switch module designed for the Allen-Bradley ControlLogix platform, providing precise motion control and synchronization for industrial applications.What type of feedback mechanism does the 1756-PLS utilize?It uses a resolver interface for highly accurate position feedback, enabling microsecond-level output response.How many inputs and outputs does the 1756-PLS have?The module features 4 groups of 4 configurable inputs and outputs, totaling 16 inputs and 16 outputs.What are the primary applications of this module?Key applications include high-speed packaging, labeling and printing, stamping and press automation, motion-based triggers, robotics, and material handling systems.Is the 1756-PLS compatible with existing ControlLogix systems?Yes, it is designed for seamless integration within the Allen-Bradley ControlLogix architecture, simplifying setup and operation.

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PRODUCT DETAILS

Allen-Bradley 1756-PLS

Overview

This is a genuine Allen-Bradley component from the ControlLogix family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Allen-Bradley catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Allen-Bradley automation ecosystem
  • Engineered to integrate inside ControlLogix installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes for the ControlLogix family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model: 1756-PLS
  • Platform: Allen-Bradley ControlLogix
  • Module Type: Programmable Limit Switch (PLS)
  • Inputs/Outputs: 4 groups × 4 channels each (16 inputs, 16 outputs)
  • Feedback Type: Resolver interface
  • Slot Width: 3 standard ControlLogix slots
  • Connectors: Three 20-pin interfaces
  • Mounting: ControlLogix chassis
  • Operating Temperature: 0°C to +60°C
  • Certifications: UL, CE, c-UL
  • Response Time: Microsecond-level precision for output events.

Applications

  • High-Speed Packaging Equipment: Achieve perfect output synchronization with rotary motion for efficient and consistent packaging.
  • Labeling & Printing Machines: Implement precise cut, mark, or apply control based on exact product position for superior quality.
  • Stamping & Press Automation: Drive limit switch logic with unparalleled accuracy based on shaft position for enhanced safety and productivity.
  • Motion-Based Triggers: Utilize rotary encoder or resolver-based precision control for a wide array of industrial triggers.
  • Robotics and Automation: Integrate into complex robotic systems requiring accurate positional feedback and synchronized actions.
  • Material Handling Systems: Optimize conveyor and sorting systems with precise position-based control.

Why Choose the 1756-PLS?

Experience unmatched precision with ultra-fast and exceptionally accurate response times, driven by dependable resolver position feedback. Benefit from highly flexible and programmable I/O logic, adaptable to specific position or machine cycle requirements. This module is engineered for high-performance motion control environments, maximizing your operational efficiency. Enjoy the benefits of full integration within the ubiquitous Allen-Bradley ControlLogix architecture, simplifying installation and configuration. The Allen-Bradley 1756-PLS is a globally recognized product, ensuring readily accessible spare parts and technical support. Built to Allen-Bradley's stringent quality standards, it offers long-term reliability and performance in demanding industrial settings.

Availability & Shipping

  • In stock: 1756-PLS ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 1756-PLS ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The 1756-PLS is a programmable limit switch module designed for the Allen-Bradley ControlLogix platform, providing precise motion control and synchronization for industrial applications.

Machine down? We ship parts the same day.

New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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