Allen-Bradley 1756-DHRIO Communication Interface Module

Core Functions and Technical Specifications

Functional Positioning

Technical Parameters (English)

Key Features

1. Dual-Channel Flexibility:
• Each channel can independently operate as a DH+ scanner or RIO adapter, supporting hybrid network topologies.
• Enables communication between ControlLogix, PLC-5, SLC, and third-party devices 23.
2. High-Speed Data Transfer:
• Supports block transfer for large data packets (e.g., analog signals, diagnostics) and CIP messaging for real-time control commands 4.
3. Rugged Design:
• Wide temperature range and industrial-grade components ensure reliability in harsh environments (e.g., manufacturing plants, chemical facilities) 2.
4. Modular Integration:
• Hot-swappable design allows module replacement without powering down the chassis, reducing downtime 2.
5. Protocol Compatibility:
   Seamless connection between DH+and RIO networks, supporting integration with Flex IO and Point IO systems, compatible with RSLogix 5000/Studio 5000 programming environment