1785-L40B

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Overview of Allen-Bradley 1785-L40B PLC-5/40 Processor Module

The Allen-Bradley 1785-L40B is a PLC-5/40 series programmable controller processor designed for medium to large industrial automation systems. It features 48K words of user memory, supports up to 2048 discrete I/O points, and provides four communication channels configurable for Data Highway Plus (DH+), Remote I/O, or other protocols. This processor offers enhanced performance and flexibility suitable for complex control applications.

Key Features of 1785-L40B

  • 48K words of user SRAM memory with EEPROM program backup.
  • Supports a total of 2048 I/O points (digital and analog).
  • Four communication ports configurable for DH+, Remote I/O, and others.
  • Fast scan time to support complex and real-time control.
  • Battery-backed memory to prevent data loss during power failure.
  • Compatible with PLC-5 series I/O and communication modules.
  • Supports multiple chassis and remote I/O expansions.
  • Operating temperature range: 0 to 60 °C (32 to 140 °F).
  • Indications via LEDs on the front panel for power, faults, and communication status.
  • UL Listed, CE Marked, CSA Certified for industrial use.

Technical Specifications

Specification Details
User Memory 48K words SRAM
Maximum I/O Points 2048 digital/analog I/O points
Communication Channels 4 configurable (DH+, Remote I/O, etc.)
Power Dissipation Approximately 17.3 Watts
Backplane Current Load 3.3 Amps at 5 V DC
Scan Time Approximately 10 milliseconds for full cycle
Communication Port RS-232 compatible, 25-pin D connector
Operating Temperature 0 to 60 °C (32 to 140 °F)
Dimensions Approximately 1.5 in x 5.8 in x 10.5 in
Weight About 0.79 kg (1.74 lbs)

Applications / Use Cases

The 1785-L40B processor is suitable for large and complex industrial automation projects requiring extensive I/O and multiprotocol communications. It is commonly used in manufacturing plants, process control systems, and automated material handling to ensure scalable, reliable, and high-performance control operations.

1785-L40B

$0.00

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Does it come with a warranty?

Yes, All products are offered wth 1-Year warranty.

What is the condition of the product?

All products sold are New & Unused.

How fast is shipping?

All products are delivered within 2-8 business days depending on our stock location.

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