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    AI Overview
    CompactLogix – L4x: The Third Generation – The Automation Blog
    The Allen-Bradley 1768-L4x is a series of CompactLogix controllers (specifically the 1768-L43 and 1768-L45) designed for industrial automation, supporting motion control and 1769 Compact I/O modules. The L4x line, often used with 1768-ENBT Ethernet modules, was officially discontinued by Rockwell Automation in 2020 and is now considered a legacy product, replaced by newer 5069 CompactLogix 5380 systems. 
    Key Features & Models 
    • 1768-L43: Features 2MB user memory, supports 4 position axes, and up to 16 local 1769 I/O modules.
    • 1768-L45: Features 3MB user memory, supports 8 position axes, and up to 30 local 1769 I/O modules.
    • Communication Modules: These processors pair with 1768-ENBT (Ethernet/IP) or 1768-CNB (ControlNet) modules.
    • System Layout: In a 1768-L4x system, modules are placed between the power supply and the controller, with 1769 I/O to the right. 
    Obsolescence and Support 
    • Discontinued: The 1768-L4x line was announced as discontinued on December 31, 2020.
    • Availability: While you can still find used/refurbished units on marketplaces like eBay, official new spares are limited or unavailable.
    • Safety Advisory: A product safety advisory existed for certain 1768-L4x/B processors regarding firmware. 
    For new projects, upgrading to the
    5069 CompactLogix 5380
    Go to product viewer dialog for this item.
    platform is recommended. 
    • PRODUCT SAFETY ADVISORY Compact Logix 1768-L4x and ...
      – Product Identification – ... Compact GuardLogix safety processors, catalog numbers 1768-L43S, 1768-L45S, 1768-L43S-CC, and 1768-
      Rockwell Automation
    • CompactLogix – L4x: The Third Generation
      Feb 7, 2019 — The L4x line included two controllers options. The 1768-L43 controller came with 2MB of user memory and support for two 1768 modul...
      The Automation Blog
    • Allen Bradley 1768-ENBT CompactLogix L4X EtherNet/IP ...
      This Allen-Bradley 1768-ENBT CompactLogix L4X module is a perfect fit for your industrial automation needs. With its EtherNet/IP t...
      eBay
    • 1768-ENBT | Allen-Bradley | US - Rockwell Automation
      Rockwell Automation announces that as of December 31, 2020, the CompactLogix L4X EtherNet/IP Module will be discontinued and no lo...
      Rockwell Automation
    • CompactLogix Controllers Specifications - Kheoos
      In a 1768-L4x controller system, place 1768 modules between the power supply and the controller. Place the 1769 modules to the rig...
      Kheoos
    • Creating Projects for Discontinued Allen-Bradley 1768-L43 ...
      Feb 12, 2026 — The 1768-L43 was discontinued (End-of-Life) as part of the migration to the newer 5069 CompactLogix 5380 controllers. Using it for...
      Industrial Monitor Direct
    • PRODUCT SAFETY ADVISORY Compact Logix 1768-L4x and ...
      – Product Identification – ... Compact GuardLogix safety processors, catalog numbers 1768-L43S, 1768-L45S, 1768-L43S-CC, and 1768-
      Rockwell Automation
    • CompactLogix – L4x: The Third Generation
      Feb 7, 2019 — The L4x line included two controllers options. The 1768-L43 controller came with 2MB of user memory and support for two 1768 modul...
      The Automation Blog
    • Allen Bradley 1768-ENBT CompactLogix L4X EtherNet/IP ...
      This Allen-Bradley 1768-ENBT CompactLogix L4X module is a perfect fit for your industrial automation needs. With its EtherNet/IP t...
      eBay
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    Web results

    1768-ENBT | Allen-Bradley | US


    Rockwell Automation
    https://www.rockwellautomation.com › ... › Products
    Rockwell Automation
    https://www.rockwellautomation.com › ... › Products
    Rockwell Automation announces that as of December 31, 2020, the CompactLogix L4X EtherNet/IP Module will be discontinued and no longer available for sale.Read more
    1768-L4x Processor from www.rockwellautomation.com

    Allen Bradley 1768-ENBT CompactLogix L4X EtherNet/IP ...


    eBay
    https://www.ebay.com › itm
    eBay
    https://www.ebay.com › itm
    This Allen-Bradley 1768-ENBT CompactLogix L4X module is a perfect fit for your industrial automation needs. With its EtherNet/IP technology, it provides a ...
    1768-L4x Processor from www.ebay.com
    $199.00 · In stock · Free delivery

    1768 CompactLogix Controllers User Manual, ...


    Rockwell Automation
    https://literature.rockwellautomation.com › groups
    Rockwell Automation
    https://literature.rockwellautomation.com › groups
    PDF
    The 1768-L43 and 1768-L45 controllers offer one built-in serial port and have a key on the front panel so that you can change controller modes. Topic. Page.Read more
    146 pages

    Allen Bradley 1768-ENBT CompactLogix L4X Ethernet ...


    FUS Industrial
    https://fus-industrial.com › Electrical › PLCs › Modules
    FUS Industrial
    https://fus-industrial.com › Electrical › PLCs › Modules
    OEM. -Allen Bradley. Part Number. -1768-ENBT. Main Voltage. -n/a. Control Voltage. -n/a. Further Information. -n/a. Condition. - Used. Warranty. - 30 Days.Read more
    1768-L4x Processor from fus-industrial.com
    14-day returns

    CompactLogix – L4x: The Third Generation


    The Automation Blog
    https://theautomationblog.com › compactlogix-gen-3
    The Automation Blog
    https://theautomationblog.com › compactlogix-gen-3
    Feb 7, 2019 — The L4x line included two controllers options. The 1768-L43 controller came with 2MB of user memory and support for two 1768 modules, four ...Read more
    1768-L4x Processor from theautomationblog.com
    Missing: Processor ‎| Show results with: Processor

    Compactlogix layout | PLCtalk - Interactive Q & A


    PLCTalk.net
    https://www.plctalk.net › forums › threads › compactlo...
    PLCTalk.net
    https://www.plctalk.net › forums › threads › compactlo...
    Nov 3, 2015 — The 1768-ENBT is a complimentary EtherNet/IP communications interface that can only be used with the 1769-L4x controllers. It allows the local ...Read more
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    Web results

    1768 l4x processor


    Moore Automation Limited
    https://www.mooreplc.com › 1768-l4x-processor_sp
    Moore Automation Limited
    https://www.mooreplc.com › 1768-l4x-processor_sp
    Configurable Voltage Supports Diverse Field Devices A key operational advantage of the T8461C is its wide 18V to 60V DC output range. This adjustability allows ...

    CompactLogix Controllers Specifications


    Kheoos
    https://match.kheoos.com › media › medias
    Kheoos
    https://match.kheoos.com › media › medias
    PDF
    In a 1768-L4x controller system, place 1768 modules between the power supply and the controller. Place the 1769 modules to the right of the 1768 backplane: • As ...Read more
    Missing: Processor ‎| Show results with: Processor

    Factory Sealed AB 1768-CNBR SER A CompactLogix L4X ...


    eBay
    https://www.ebay.com › ... › PLC Processors
    eBay
    https://www.ebay.com › ... › PLC Processors
    New AB 1769-L32E SER A CompactLogix EtherNet Processor. 1469.0 USD. 1366.0 ... Factory Sealed AB 1768-CNBR SER A CompactLogix L4X Redundant Brid. M.Read more
    $551.00 · In stock · Free delivery · 30-day returns

    Migration Solutions: Compactlogixâ„¢ 1768-L4X Controller ...


    Scribd
    https://www.scribd.com › document › migrat-pp037-en-e
    Scribd
    https://www.scribd.com › document › migrat-pp037-en-e
    Migration Solutions. CompactLogix™ 1768-L4x Controller to CompactLogix 5380 Controller. Identify, Mitigate and Eliminate the Risks of Automation ...Read more
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