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Allen-Bradley 1785-L11B PLC-5/11 Processor for industrial automation systems with communication ports visible

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Allen-Bradley 1785-L11B

by Allen-Bradley

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OverviewElevate your industrial automation capabilities with the Allen-Bradley 1785-L11B PLC-5/11 Processor. This high-performing programmable logic controller serves as a fundamental component for PLC-5 automation infrastructures, ensuring remarkable dependability and operational efficiency. Equipped with 8K words of SRAM memory, the 1785-L11B facilitates rapid data processing and supports intricate control programs, guaranteeing seamless and effective operations. Its versatile communication options, including Data Highway Plus (DH+), make it an ideal choice for a wide array of demanding industrial settings. As a distinguished member of the esteemed PLC-5 family, the 1785-L11B processor integrates effortlessly into existing modular I/O expansion configurations. Its advanced control features and compatibility with various communication protocols position it as a critical element for vital applications across manufacturing, sophisticated process automation, and precise material handling systems. Achieve enhanced operational command and improved system adaptability with this dependable Allen-Bradley solution.Key Features 8K Word SRAM Memory: Ample memory capacity to support complex control logic and data, ensuring smooth and responsive operation of elaborate processes. PLC-5 I/O Expansion Support: Enables scalable and adaptable automation solutions, allowing for effortless integration with numerous input/output modules to meet evolving system needs. Series E Design for Enhanced Reliability: Engineered to the Series E standard, guaranteeing superior performance stability, increased operational uptime, and an extended lifespan in challenging industrial settings. Versatile Communication Options: Supports multiple interfaces, including Data Highway Plus (DH+), Remote I/O, and RS-232, providing flexible connectivity with other devices and networks. Optimized Processing Speed: Delivers swift execution of control instructions, vital for real-time industrial applications where precision and timing are paramount. Chassis-Based Mounting: Designed for secure installation within 1771 I/O Chassis, ensuring robust physical integration and simplified maintenance within your control panel. Technical Specifications Model: 1785-L11B Series: E Memory: 8K Word SRAM Processor Type: PLC-5/11 Communication Ports: Data Highway Plus (DH+), Remote I/O, RS-232 Mounting: Chassis-Based (compatible with 1771 I/O Chassis) Certifications: UL, CE, RoHS compliant Input Voltage: (Varies by chassis and power supply) Programming Software: Rockwell Software RSLogix 5 Applications Factory & Industrial Automation: Provides robust and reliable PLC control for diverse manufacturing processes, optimizing production lines and machine operations. Material Handling & Conveyor Systems: Ensures seamless and efficient movement of goods, enhancing logistics and reducing operational bottlenecks in automated warehouses and distribution centers. Process Control & Monitoring: Ideal for precise regulation and oversight within critical industries such as power generation, water/wastewater treatment, and chemical processing. Machine Control & Safety Systems: Enhances the precision, repeatability, and safety of machinery across various sectors, from robotics to specialized fabrication equipment. Building Automation & HVAC Control: Supports large-scale automation efforts in commercial and industrial buildings, optimizing energy consumption and environmental controls. Automotive Manufacturing: Critical for automated assembly lines, robotic control, and quality inspection systems within the automotive industry. Why Choose?Constructed with Allen-Bradley's renowned engineering, the 1785-L11B delivers exceptional resilience and consistent operation in even the most demanding industrial environments, ensuring reliable performance that you can depend on. Experience superior processing speeds and efficient data handling, leading to improved operational uptime and reduced downtime.Order NowWe provide a variety of shipping options to meet your specific requirements. We understand the urgency of industrial needs; therefore, expedite delivery services are available for critical components. For detailed information regarding shipping times and costs, please contact our sales team or refer to our shipping policy at checkout. We also offer international shipping to various locations worldwide. Please note that customs duties and taxes may apply.FAQWhat is the memory capacity of the 1785-L11B?The 1785-L11B processor features 8K words of SRAM memory, allowing for ample storage and efficient execution of complex control logic and data within various industrial applications.Which communication protocols does this processor support?The 1785-L11B supports multiple communication interfaces, including Data Highway Plus (DH+), Remote I/O, and RS-232, offering versatile connectivity within your automation network.Is the 1785-L11B compatible with existing PLC-5 systems?Yes, as a core component of the PLC-5 family, the 1785-L11B processor is designed for seamless integration into existing modular I/O expansion setups, ensuring compatibility and easy upgrades.What are the primary applications for this processor?The 1785-L11B is widely used in factory and industrial automation, material handling, process control, machine control, building automation, and automotive manufacturing, providing robust and reliable control across diverse sectors.Does this product come with any certifications?Yes, the 1785-L11B processor is UL, CE, and RoHS compliant, ensuring it meets recognized standards for safety, environmental protection, and quality.

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$1,221.00
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PRODUCT DETAILS

Allen-Bradley 1785-L11B

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

  • Model: 1785-L11B
  • Series: E
  • Memory: 8K Word SRAM
  • Processor Type: PLC-5/11
  • Communication Ports: Data Highway Plus (DH+), Remote I/O, RS-232
  • Mounting: Chassis-Based (compatible with 1771 I/O Chassis)
  • Certifications: UL, CE, RoHS compliant
  • Input Voltage: (Varies by chassis and power supply)
  • Programming Software: Rockwell Software RSLogix 5

Applications

  • Factory & Industrial Automation: Provides robust and reliable PLC control for diverse manufacturing processes, optimizing production lines and machine operations.
  • Material Handling & Conveyor Systems: Ensures seamless and efficient movement of goods, enhancing logistics and reducing operational bottlenecks in automated warehouses and distribution centers.
  • Process Control & Monitoring: Ideal for precise regulation and oversight within critical industries such as power generation, water/wastewater treatment, and chemical processing.
  • Machine Control & Safety Systems: Enhances the precision, repeatability, and safety of machinery across various sectors, from robotics to specialized fabrication equipment.
  • Building Automation & HVAC Control: Supports large-scale automation efforts in commercial and industrial buildings, optimizing energy consumption and environmental controls.
  • Automotive Manufacturing: Critical for automated assembly lines, robotic control, and quality inspection systems within the automotive industry.

Why Choose the 1785-L11B?

Constructed with Allen-Bradley's renowned engineering, the 1785-L11B delivers exceptional resilience and consistent operation in even the most demanding industrial environments, ensuring reliable performance that you can depend on. Experience superior processing speeds and efficient data handling, leading to improved operational uptime and reduced downtime.

Availability & Shipping

  • In stock: 1785-L11B 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-L11B ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The 1785-L11B processor features 8K words of SRAM memory, allowing for ample storage and efficient execution of complex control logic and data within various 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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Independent Supplier Notice

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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