Allen Bradley 1771-KA2 Communication Module

The Allen Bradley 1771-KA2 is a communication adapter module designed for data exchange between PLC-2, PLC-3, and PLC-5 systems over a Data Highway Plus (DH+) network. It enables seamless integration of legacy PLC systems into a centralized control architecture, providing efficient data transfer and reliable network communication in industrial automation environments.

Technical Specifications

  • Manufacturer: Allen Bradley (Rockwell Automation)
  • Model: 1771-KA2
  • Module Type: Data Highway Plus (DH+) Communication Adapter
  • Compatible PLCs:
    • PLC-2 Series
    • PLC-3 Series
    • PLC-5 Series
  • Communication Protocol: Data Highway Plus (DH+)
  • Baud Rate: 57.6Kbps
  • Maximum Network Distance: 10,000 feet (using recommended cable specifications)
  • Backplane Current Draw: 1.3A at 5V DC
  • Mounting: Installs in a 1771 I/O chassis
  • Status Indicators: LEDs for network and module status monitoring

Key Features

  • Enables communication between PLC-2, PLC-3, and PLC-5 controllers
  • Supports Data Highway Plus (DH+) networking for centralized data exchange
  • Allows seamless integration of legacy Allen Bradley PLCs into modern control systems
  • Modular design for easy installation into 1771 I/O chassis
  • LED indicators for quick diagnostics and status monitoring
  • High-speed data exchange for efficient process automation

Compatible Allen Bradley Components

  • Allen Bradley PLC-2, PLC-3, and PLC-5 Processors
  • Allen Bradley 1771 I/O Chassis and Power Supplies
  • FactoryTalk View and RSLogix software for system configuration and monitoring
  • DH+ Network Cables and Repeaters for extended network distances

Industry Applications

  • Manufacturing process control
  • Material handling and conveyor systems
  • Oil and gas pipeline automation
  • Power generation and utility monitoring
  • Water and wastewater treatment plants

Installation & Operational Notes

  • Installs into a 1771 I/O chassis for direct integration into existing PLC networks
  • Requires proper DH+ network wiring and configuration for stable communication
  • Supports both local and remote PLC communications for distributed control systems
  • Regular maintenance recommended to ensure reliable data transfer and network performance

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