Product Overview

• 1785-L80B is a high-performance PLC-5/80 processor module in Allen Bradley enhanced PLC-5 series
• Installed in 1771 chassis as main controller for large-scale industrial automation and distributed control systems
• Built with 64K words battery-backed SRAM, expandable to 100K via 1785-ME64 memory card
• Supports up to 3072 mixed discrete/analog I/O points; total 93 I/O chassis, 32 remote I/O racks max
• Equipped with 4 DH+/RIO ports, 1 multi-function serial port and 2 programming terminals

• Discontinued original model for legacy system maintenance, replacement and spare parts backup

• 
  

Core Features

• 64K words battery-backed SRAM (100K expandable) for program/data storage
• Supports 3072 I/O points (any mix); 93 total chassis, 32 remote racks per link
• 4 DH+/RIO ports configurable as scanner/adapter for peer-to-peer communication
• Serial port configurable for RS-232/422/423; supports DF1 and ASCII protocols
• LED indicators for RUN, PROC, COMM, BATT status monitoring

• Redundancy-compatible; optimized for harsh industrial environments

Technical Parameters

• Brand: Allen Bradley Rockwell Automation
• Part Number: 1785-L80B
• Series: PLC-5/80 Enhanced
• Type: Processor CPU Module
• User Memory: 64K Words SRAM (100K expandable)
• Max I/O Capacity: 3072 Points
• Communication Ports: 4 DH+/RIO, 1 RS-232/422/423, 2 programming terminals
• Backplane Current: 3.3A @5VDC
• Power Consumption: 12W
• Operating Temperature: 0°C ~ 60°C
• Battery: 1770-XYC
• Weight: 1.45kg
• Condition: Original Discontinued Refurbished

• Warranty: 12 Months

• 
  

Applications

• Large-scale PLC-5 automation system main control unit
• Chemical, power, water treatment and heavy manufacturing process control
• Legacy production line upgrading and distributed control system renovation

• High I/O count systems and DH+ network integration projects

• 
  

Our Advantages

• Fully tested and calibrated before delivery
• Sufficient stock fast global shipping
• Professional technical support for installation and programming
• Competitive bulk wholesale price available