Allen Bradley 1756-DHRIO/C ControlLogix Remote I/O Communication Interface Module

Overview

The Allen Bradley 1756-DHRIO/C is a ControlLogix Remote I/O communication interface module designed to link ControlLogix controllers with distributed I/O devices. It ensures fast, reliable communication and enables efficient monitoring, diagnostics, and control across industrial automation networks.

General Information

Part Number: 1756-DHRIO/C

Manufacturer: Allen Bradley

Brand / Country of Origin: Allen Bradley / United States

Series: ControlLogix

Type: Remote I/O Communication Module

Mounting: Chassis-mounted within ControlLogix system

Technology: High-speed I/O communication, network diagnostics, and status monitoring

Power Specifications

Supply Voltage: 5.1 V DC (backplane)

Current Consumption: 0.95 A @ 5.1 V DC

Power Consumption: Approximately 4.85 W

Power Source: ControlLogix backplane

Protection Features: Overcurrent and short-circuit protection

Status Indicators: LEDs for module status, network activity, and faults

Communication & Interface

Communication Protocol: Remote I/O interface for ControlLogix

Network Ports: Proprietary connectors for distributed I/O devices

Data Transfer: High-speed cyclic and acyclic messaging

Network Functions: Controller-to-I/O data exchange, diagnostics, and link supervision

Diagnostics: Integrated network fault detection and status reporting

Configuration: Software-configurable via ControlLogix programming tools

Environmental

Operating Temperature: 0 to +60 °C

Storage Temperature: -40 to +85 °C

Relative Humidity: 5% to 95%, non-condensing

Protection Rating: Suitable for installation in industrial control cabinets

Vibration Resistance: Complies with industrial automation standards

Dimensions & Weight

Dimensions (L × W × H): 144.5 × 34.6 × 130.18 mm

Weight: 0.272 kg

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