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Allen-Bradley 1785-L40E PLC Processor Module

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Allen-Bradley 1785-L40E

by Allen-Bradley

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OverviewThe Allen-Bradley 1785-L40E is a high-performance processor module designed for demanding industrial automation tasks. This component is integral to Rockwell Automation's 1785 Series, providing advanced processing within ControlLogix systems. Its powerful 32-bit RISC processor, operating at 40 MHz, ensures rapid and dependable execution of intricate control logic. With a generous 2MB of program memory and 512KB of data memory, the 1785-L40E is capable of managing complex industrial processes, offering superior control, unwavering dependability, and straightforward integration into both existing and new systems. Its broad compatibility with various Allen-Bradley I/O modules, including the 1771, 1794, and 1769 series, alongside extensive networking options, makes it a highly flexible solution for critical operations across manufacturing, packaging, robotics, and other industry sectors.Key Features High-Speed 32-bit RISC Processing: Experience fast and reliable control with a robust 40 MHz processor, optimized for intensive industrial applications. Ample Memory Capacity: Utilize 2MB of program memory and 512KB of data memory for storing and executing sophisticated applications and extensive data sets. Versatile Connectivity Suite: Benefit from a comprehensive range of communication options including Ethernet/IP for robust network integration, RS-232/RS-485 Serial for adaptable point-to-point communication, DH+ (Data Highway Plus), and ControlNet for seamless system interoperability. Industrial-Grade Dependability: Engineered for challenging environments, this module features extended operating temperature ranges (0°C to 60°C) and high humidity tolerance (5% to 95% non-condensing), ensuring consistent performance. Scalable and Adaptable Design: Built for future expansion, the 1785-L40E supports a wide spectrum of Allen-Bradley I/O modules, allowing your control system to effortlessly grow and adapt with evolving operational needs. Seamless System Integration: Achieve quick and easy integration into existing Allen-Bradley environments, thanks to its compatibility with various I/O and networking devices, minimizing downtime and maximizing efficiency. Compact and Durable Construction: Housed in an open chassis for panel mounting, its sturdy design and manageable dimensions (8.5 x 5.25 x 6.5 inches) make it ideal for various industrial enclosures. Technical Specifications Manufacturer: Rockwell Automation Brand: Allen-Bradley Model Number: 1785-L40E Processor Type: 32-bit RISC Processor Processor Speed: 40 MHz Program Memory: 2MB Data Memory: 512KB I/O Modules Supported: Compatible with Allen-Bradley 1771, 1794, and 1769 I/O Modules Communication Ports: Ethernet/IP, RS-232/RS-485 Serial, DH+ (Data Highway Plus), ControlNet Power Supply Requirements: 5V DC ± 5% Input Voltage, 1.5 Amps Current Draw Enclosure Rating: Open chassis, designed for panel mounting Dimensions: 8.5 x 5.25 x 6.5 inches (216 x 133 x 165 mm) Weight: 3.2 lbs (1.45 kg) Operating Temperature: 0°C to 60°C (32°F to 140°F) Storage Temperature: -40°C to 85°C (-40°F to 185°F) Humidity: 5% to 95% non-condensing ApplicationsThis processor is ideal for: Advanced Manufacturing Automation: Precisely control and monitor entire production lines, sophisticated packaging machinery, and dynamic robotic systems to enhance output and quality. Critical Process Control Systems: Implement in industries such as chemical manufacturing, food and beverage processing, and pharmaceuticals for real-time, accurate monitoring and precise control of sensitive processes. Efficient Material Handling Operations: Ensure high-speed accuracy and control for conveyor systems, automated guided vehicles (AGVs), hoists, and complex automated material handling infrastructures. Integrated Building Automation: Seamlessly integrate control systems within commercial and industrial buildings for optimized operation. Why Choose Palm Parts Solution?At Palm Parts Solution, we specialize in providing top-tier industrial automation components. Our selection includes high-quality, reliable products like the Allen-Bradley 1785-L40E, backed by exceptional customer service and expert support to help you find the perfect fit for your operational needs.Order NowUpgrade your industrial control systems today with the Allen-Bradley 1785-L40E processor module. Contact us to learn more or to place your order.FAQWith which I/O modules is the 1785-L40E compatible?The 1785-L40E is compatible with Allen-Bradley 1771, 1794, and 1769 series I/O modules.What are the primary communication options for this processor?Key communication options include Ethernet/IP, RS-232/RS-485 Serial, DH+ (Data Highway Plus), and ControlNet.What is the operating temperature range for the 1785-L40E?The operating temperature range is 0°C to 60°C (32°F to 140°F).

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PRODUCT DETAILS

Allen-Bradley 1785-L40E

Overview

This is a genuine Allen-Bradley component from the PLC-5 Platform (Legacy) 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 PLC-5 Platform (Legacy) 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 PLC-5 Platform (Legacy) family

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

Technical Specifications

  • Manufacturer: Rockwell Automation
  • Brand: Allen-Bradley
  • Model Number: 1785-L40E
  • Processor Type: 32-bit RISC Processor
  • Processor Speed: 40 MHz
  • Program Memory: 2MB
  • Data Memory: 512KB
  • I/O Modules Supported: Compatible with Allen-Bradley 1771, 1794, and 1769 I/O Modules
  • Communication Ports: Ethernet/IP, RS-232/RS-485 Serial, DH+ (Data Highway Plus), ControlNet
  • Power Supply Requirements: 5V DC ± 5% Input Voltage, 1.5 Amps Current Draw
  • Enclosure Rating: Open chassis, designed for panel mounting
  • Dimensions: 8.5 x 5.25 x 6.5 inches (216 x 133 x 165 mm)
  • Weight: 3.2 lbs (1.45 kg)
  • Operating Temperature: 0°C to 60°C (32°F to 140°F)
  • Storage Temperature: -40°C to 85°C (-40°F to 185°F)
  • Humidity: 5% to 95% non-condensing

Applications

This processor is ideal for:

  • Advanced Manufacturing Automation: Precisely control and monitor entire production lines, sophisticated packaging machinery, and dynamic robotic systems to enhance output and quality.
  • Critical Process Control Systems: Implement in industries such as chemical manufacturing, food and beverage processing, and pharmaceuticals for real-time, accurate monitoring and precise control of sensitive processes.
  • Efficient Material Handling Operations: Ensure high-speed accuracy and control for conveyor systems, automated guided vehicles (AGVs), hoists, and complex automated material handling infrastructures.
  • Integrated Building Automation: Seamlessly integrate control systems within commercial and industrial buildings for optimized operation.

Why Choose the 1785-L40E?

At Palm Parts Solution, we specialize in providing top-tier industrial automation components. Our selection includes high-quality, reliable products like the Allen-Bradley 1785-L40E, backed by exceptional customer service and expert support to help you find the perfect fit for your operational needs.

Availability & Shipping

  • In stock: 1785-L40E 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 1785-L40E ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The 1785-L40E is compatible with Allen-Bradley 1771, 1794, and 1769 series I/O modules.

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.

CUSTOMER REVIEWS

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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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