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1756-DHRIO

1756-DHRIO Allen-Bradley | ControlLogix Communication Module

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  • Manufacturer: Allen-Bradley

  • Product No.: 1756-DHRIO

  • Product Type: Communication Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 293g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Düşündiriş

Allen-Bradley ControlLogix DH+/Remote I/O Bridge Module 1756-DHRIO

The Allen-Bradley 1756-DHRIO is a versatile communication interface for ControlLogix systems. It bridges modern controllers with legacy Data Highway Plus (DH+) and Remote I/O networks. This dual-channel module enables seamless data exchange across mixed device environments.

Core Specifications

  • Brand & Model: Allen-Bradley 1756-DHRIO
  • Series: ControlLogix Communication Module
  • Function: DH+/Remote I/O Bridge and Scanner
  • Channels: 2 Independent Ports (Channel A & B)
  • Supported Protocols: Data Highway Plus (DH+), Remote I/O (RIO)
  • Communication Speed: 57.6, 115.2, or 230.4 Kbaud (selectable)
  • Backplane Current: 1.7A @ 5V DC, 850 mA @ 24V DC
  • Power Dissipation: 4.5 Watts Max (15.4 BTU/hour)

Key Features

  • Dual Protocol Support: Acts as a bridge for both DH+ peer-to-peer messaging and Remote I/O scanning.
  • Legacy Integration: Connects ControlLogix to PLC-5, SLC, Flex I/O, and Point I/O systems.
  • Flexible Topology: Supports daisy-chain networks with proper termination.
  • Hot Swap Capable: Can be installed/removed from a powered chassis (in non-hazardous areas).
  • High Connection Capacity: Supports up to 32 Logix connections for efficient data handling.

Installation & Wiring

  • Recommended Cable: Belden 89463 Twinaxial (20 AWG).
  • Cable Length vs Speed: Up to 10,000 ft at 57.6 Kbaud; shorter lengths for higher speeds.
  • Termination: Requires 82Ω or 150Ω resistor at each network end, based on baud rate.
  • Connector Kit: Phoenix MVSTBR2.5/3-ST BK AU terminal blocks.
  • Wiring: Uses 3-pin terminals per channel (Line 1, Shield, Line 2) plus an 8-pin mini-DIN port.
  • ESD Warning: Handle with static precautions; module is sensitive to electrostatic discharge.

Physical & Environmental

  • Operating Temperature: 32° to 140°F (0° to 60°C)
  • Weight: 0.64 lbs (0.293 kg)
  • Slot Width: 1 Slot in 1756 ControlLogix Chassis
  • Enclosure: Open Type (for installation inside a chassis)
  • Network Limits: Can bridge messages through up to 3 chassis and 4 networks.

Packaging & Shipping

  • One Allen-Bradley 1756-DHRIO communication module.
  • Secure packaging to prevent damage.
  • Shipped via FedEx, UPS, or DHL.

FAQ

  • What is the main purpose of this module?
    It allows modern ControlLogix controllers to communicate with older DH+ networks and Remote I/O devices, facilitating system upgrades and integration.
  • Can both channels operate differently?
    Yes, each channel can be independently configured as either a DH+ or a Remote I/O network.
  • Is special software needed for configuration?
    Yes, you configure the network type and parameters using Rockwell Automation's RSLogix 5000/Studio 5000 software.
🏷️ Tags: Communication Module

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