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Unbeatable Price Allen-bradley 1785-l40b (top Rated) [E9SHMv7K]

$70.99 $227.99 -69%

Unbeatable Price Allen-bradley 1785-l40b (top Rated) [E9SHMv7K]OverviewThe Unbeatable Price Allen-bradley 1785-l40b (top Rated) [E9SHMv7K] is a PLC-5/40 processor module, part of the classic PLC-5 family used in a wide range of legacy industrial control systems. With 48K words of user memory, support for Remote I/O and Data High

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Unbeatable Price Allen-bradley 1785-l40b (top Rated) [E9SHMv7K]

Unbeatable Price Allen-bradley 1785-l40b (top Rated) [E9SHMv7K]

Overview

The Unbeatable Price Allen-bradley 1785-l40b (top Rated) [E9SHMv7K] is a PLC-5/40 processor module, part of the classic PLC-5 family used in a wide range of legacy industrial control systems. With 48K words of user memory, support for Remote I/O and Data Highway Plus (DH+), and a battery-backed RAM, this processor is well-suited for medium-to-large applications requiring robust logic control and network connectivity. It includes a mode keyswitch for secure operation.


Key Features

  • User Memory: 48K words

  • Communication:

    • Remote I/O

    • Data Highway Plus (DH+)

    • 57.6K baud default communication speed

  • Processor Type: PLC-5/40

  • Backplane Compatibility: Standard PLC-5 chassis

  • Memory Type: Battery-backed RAM

  • Keys: RUN, PROG, REM selectable via onboard keyswitch

  • Programming Software: RSLogix 5

  • Expansion: Supports I/O and communication expansion modules


Technical Specifications

  • Catalog Number: 1785-L40B

  • Platform: PLC-5

  • Power Supply: 5V DC via backplane

  • Memory Retention: Battery-backed (replaceable battery)

  • Mounting: PLC-5 chassis

  • Baud Rate: Configurable up to 57.6 kbps (DH+)

  • Operating Temperature: 0°C to 60°C

  • Certifications: UL, CSA, CE

  • Status Indicators: LED diagnostics for power, communication, and fault


Applications

  • Legacy system automation and upgrades

  • Water/wastewater treatment facilities

  • Automotive and assembly lines

  • Chemical and process control

  • Infrastructure and facility automation


Why Choose the 1785-L40B

  • Reliable for existing PLC-5 system maintenance and expansion

  • Dual communication options support complex topologies

  • Strong memory capacity for sophisticated control logic

  • Long-standing Allen-Bradley reputation for industrial reliability


Order Now

The Unbeatable Price Allen-bradley 1785-l40b (top Rated) [E9SHMv7K] PLC-5/40 processor is available and ships worldwide. 

What Our Customers Say

January 18, 2026

Absolutely no complaints!

A great tool that feels exceptionally premium.

- Marshall H..

January 18, 2026

Absolutely no complaints!

I am happy with this product in each and every way.

- Kelly O..

January 18, 2026

Absolutely no complaints!

It’s a very fine, exceptionally nice tool.

- Wren A..

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