Configured for high-density register computation and multi-channel remote I/O link management in industrial control loops, the Allen-Bradley 1785-L80B (1785-L80B CPU Processor) provides direct physical/electrical execution across PLC-5 rack architectures.

Model Identification Matrix

• Product Family: PLC-5
• Product Model: 1785-L80B
• Spare Model: 1785L80B
• Module Type: CPU Processor Module
• Memory Architecture: 100K Word SRAM
• Country of Origin: United States
• Tariff Code: 8537109060

Hardware Specifications

Industrial Network Architecture & Bus Performance

Optimized for high-performance automation cells, the processor coordinates data exchanges through four integrated Data Highway Plus (DH+) and Remote I/O communication ports. Backplane bus communication velocity and firmware flash compatibility rely on stable electrical loading across the rack. I/O density scaling handles up to 3072 points with mixed analog and discrete support, maintaining deterministic update rates across extended link topologies.

Package Ordering Information

• 1 x 1785-L80B PLC-5/80 Processor Module
• 1 x Battery backup module component
• 1 x Hardware configuration compliance document

Physical Insertion & Wiring Instructions

• Backplane Insertion Protocols:
  • Align the module card edges precisely with the designated card guides on the PLC-5 chassis.
  • Push the unit firmly inward until the top and bottom mechanical locking levers snap securely into place.
• Grounding & Shielding Execution:
  • Fasten heavy-duty copper bonding straps from the chassis ground lug to the cabinet earth bus bar.
  • Terminate all DH+ and Remote I/O communication cable shields at designated ground points to block electromagnetic interference.
• Environmental & Thermal Management:
  • Maintain unobstructed vertical airflow paths around the chassis to prevent localized overheating.
  • Verify that cabinet internal temperatures stay within the specified operating limits during peak industrial load.

Frequently Asked Questions

• Q: What is the total user memory capacity of the 1785-L80B processor?

  A: The module is equipped with a 100K Word SRAM memory structure for application logic and data storage.

• Q: How many communication channels are embedded on this processor?

  A: The unit features 4 integrated channels capable of supporting Data Highway Plus (DH+) and Remote I/O protocols.

• Q: What is the maximum I/O handling capacity for this controller?

  A: It supports a total of 3072 I/O points accommodating both analog and digital module configurations.

• Q: Is hot-swapping permitted when installing or removing this module?

  A: No, backplane power must be completely disconnected before inserting or extracting the processor card.

• Q: What physical dimensions characterize the shipping container size?

  A: The estimated shipping dimensions of the packaged hardware unit are 5.1x12.7x27.9cm.

• Q: What is the total weight of the processor hardware module?

  A: The unit weighs approximately 1.4 kg excluding external packaging materials.

• Q: What ambient operating temperature range is designated for this hardware?

  A: The processor functions reliably within an ambient temperature span ranging from 0 deg C to 60 deg C.

• Q: What country serves as the manufacturing origin for this device?

  A: The hardware is manufactured and originated within the United States.