Allen-Bradley 1756-DHRIO | ControlLogix Communication Module

Product Overview

The Allen-Bradley 1756-DHRIO is a versatile ControlLogix communication module that enables connectivity across Remote I/O (RIO) and Data Highway Plus (DH+) networks. Designed with two independent channels, this module simplifies data exchange between PLCs, SLC controllers, and ControlLogix systems on different communication networks.

The 1756-DHRIO features two ports for Channel A and Channel B, each with a 3-pin terminal block for direct wiring. Additionally, Channel A includes an 8-pin mini-DIN port connected in parallel, ensuring flexible installation. With selectable data rates of 57.6 kbps, 115.2 kbps, and 230.4 kbps, the module adapts to various cable lengths and system requirements.

Engineered for high reliability, this module supports messaging through up to three chassis and four communication networks, enabling robust information sharing across large automation systems.

Key Features

• Supports DH+ and RIO protocols for flexible system integration.

• Provides two channels (A and B) with individual 3-pin terminals.

• Includes parallel 8-pin mini-DIN port on Channel A.

• Offers baud rates of 57.6, 115.2, and 230.4 kbps depending on cable length.

• Enables messaging across three chassis and four networks.

• Designed for seamless use within ControlLogix architectures.

Technical Specifications

Application

The Allen-Bradley 1756-DHRIO module is widely used in distributed control systems requiring reliable communication between different controllers. Its dual-channel architecture and flexible baud rate selection make it suitable for plant-wide automation, ensuring efficient data transfer across multiple networks.

FAQ

Q1: Is the Allen-Bradley 1756-DHRIO brand new and original?
A1: Yes, we only supply brand-new, factory-sealed products.

Q2: Do you have the 1756-DHRIO available in stock?
A2: Yes, this model is in stock, with shipping in 3 days to 2 weeks depending on order size.

Q3: What couriers are used for delivery?
A3: We ship with DHL, UPS, or FedEx to ensure fast and secure delivery.

Q4: What is the maximum supported communication speed of the 1756-DHRIO?
A4: The module supports up to 230.4 kbps, depending on cable length.

Q5: Can the 1756-DHRIO connect multiple ControlLogix chassis?
A5: Yes, it supports messaging through a maximum of three chassis and four networks.