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Allen-Bradley ControlLogix 1756 1756-DHRIO DH Plus Remote I/O Communication Module | Original New

Allen-Bradley ControlLogix 1756 1756-DHRIO DH Plus Remote I/O Communication Module | Original New

Allen-Bradley ControlLogix 1756 DH Plus Remote I/O Communication Module

Complete Model

1756-DHRIO

Official Product Description

Allen-Bradley 1756-DHRIO ControlLogix dual-channel Data Highway Plus and Remote I/O communication module with individually selectable DH+ or RIO channels.

CORE FEATURE: Two individually selectable DH+ or Remote I/O channels in one ControlLogix chassis slot.

LEAD TIME: In stock

WARRANTY: 1 year

Email Inquiry [email protected]

WhatsApp +86 18159889985

Appurtenance:

allen bradley controllogix 1756 1756 dhrio dh plus remote io communication module-1

Overview
Technical Data
Inquiry
Features
Interfaces
Installation
Environment
FAQ
Recommend Models
Recommended Products

Product Overview

1756-DHRIO is an Allen-Bradley ControlLogix 1756 communication module for Data Highway Plus and Universal Remote I/O networks.

Its two channels are individually selectable for DH+ or Remote I/O operation. As an RIO scanner it supports 32 logical rack connections or 16 block-transfer connections per channel.

The module occupies one ControlLogix chassis slot and supports communication rates of 57.6 Kbps, 115.2 Kbps and, on channel A, 230.4 Kbps.

Technical Data

Complete model	1756-DHRIO
Brand	Allen-Bradley / Rockwell Automation
Product family	ControlLogix 1756
Product type	Data Highway Plus and Remote I/O communication module
Lifecycle status	Discontinued as of December 31, 2024
Communication networks	Data Highway Plus and Universal Remote I/O
Number of channels	2, individually selectable for DH+ or Remote I/O
Communication rates	57.6 Kbps and 115.2 Kbps on both channels; 230.4 Kbps on channel A
Remote I/O operation	Scanner only
Remote I/O capacity	32 logical rack connections or 16 block-transfer connections per channel
Connections supported	32 maximum
Backplane current draw	850 mA at 5.1 VDC; 1.7 mA at 24 VDC
Power dissipation	4.5 W
Thermal dissipation	15.4 BTU/hr
Isolation voltage	30 V continuous, basic insulation; type tested at 877 VDC for 60 seconds
Network cable	Belden 9463 copper twinaxial, 0.519 square mm / 20 AWG
Dimensions	Numeric dimensions are not stated in official publication 1756-TD003R; one-slot ControlLogix chassis module
Weight	Not stated in official publication 1756-TD003R for this exact catalog number
Slot width	One ControlLogix chassis slot
Module location	Chassis-based, any slot
Compatible chassis	1756-A4, 1756-A7, 1756-A10, 1756-A13 and 1756-A17
Enclosure type	None, open-style equipment
Operating temperature	0 to 60 degrees C
Storage temperature	-40 to +85 degrees C
Relative humidity	5 to 95 percent, noncondensing
Vibration	2 g at 10 to 500 Hz
Shock	30 g operating; 50 g nonoperating
Certifications	cULus, CSA, CE, RCM, ATEX, IECEx, UKEX, UKCA and CCC when marked
Official sources	Rockwell Automation 1756-DHRIO product page; publication 1756-TD003R-EN-E pages 18 to 24; publication 1756-IN070B-EN-P pages 5 to 8

Inquiry

CONTACT

STELLA

Email Inquiry [email protected]

WhatsApp +86 18159889985

Features

Dual network channels

Channels A and B can be configured independently for Data Highway Plus or Remote I/O service.

Remote I/O scanner

Each channel supports as many as 32 logical rack connections or 16 block-transfer connections.

Controller messaging

The module routes DH+ messages among supported ControlLogix, PLC and SLC controllers.

Multiple rates

The module supports 57.6 and 115.2 Kbps on both channels, with 230.4 Kbps available on channel A.

Interfaces

Channel A	Configure as DH+ or Remote I/O; supports 57.6, 115.2 and 230.4 Kbps.
Channel B	Configure as DH+ or Remote I/O; supports 57.6 and 115.2 Kbps.
Network media	Use Belden 9463 copper twinaxial cable and the specified three-pin connector and torque.
Backplane interface	Install the module in one slot of a compatible 1756 chassis and include 850 mA at 5.1 VDC in the power budget.

Installation

01 - Verify the exact catalog number

Match 1756-DHRIO on the quotation, module label, packaging and Rockwell Automation product record.

02 - Plan channel roles

Define whether channel A and channel B will operate as DH+ or Remote I/O before wiring and configuration.

03 - Confirm chassis power

Reserve one compatible 1756 chassis slot and verify the backplane power budget for the published current draw.

04 - Connect the network

Use the specified Belden 9463 twinaxial cable, observe polarity and connector torque, and maintain the required cable routing.

05 - Commission routing and I/O

Configure link IDs, rates and RIO racks, then verify module indicators, message paths and every intended I/O connection.

Environment

Operating temperature

0 to 60 degrees C.

Storage temperature

-40 to +85 degrees C.

Relative humidity

5 to 95 percent, noncondensing.

Mechanical endurance

2 g vibration at 10 to 500 Hz, 30 g operating shock and 50 g nonoperating shock.

Protection

Open-style equipment; install it in a suitable industrial enclosure.

Lifecycle

Rockwell Automation lists this catalog number as discontinued; compatibility and service strategy should be reviewed before procurement.

FAQ

Q1. How can the exact quoted 1756-DHRIO be verified?

Match 1756-DHRIO on the quotation, module label and packaging. Confirm two DH+/RIO channel connectors, the local programming port, one-slot ControlLogix format and the correct series marking.

Q2. How can New, Used or Refurbished condition be distinguished?

Request date-marked photos of the full label, serial and series markings, both channel connectors, local programming port, indicators, backplane connector and housing. Look for terminal wear, altered labels, repaired plastic and chassis insertion marks.

Q3. How should supplier legality and reliability be checked?

Verify the supplier legal entity, registered address, invoice details, payment beneficiary and traceable contact. The offer must state Allen-Bradley, 1756-DHRIO, condition, series, quantity and included connectors.

Q4. Which specifications must engineering confirm before purchase?

Confirm channel A and B roles, required DH+/RIO rates, rack and block-transfer counts, link routing, firmware and series compatibility, one-slot chassis fit, backplane power and Belden 9463 media.

Q5. What physical evidence should be requested before payment?

Ask for one date-marked photo set showing the complete 1756-DHRIO label, serial and series markings, both channel connectors, local programming port, front indicators, backplane connector, seals and packaging.

Q6. Can 1756-DHRIOXT, 1756-RIO or another module replace 1756-DHRIO?

Not automatically. 1756-DHRIOXT is the extended-temperature variant, while 1756-RIO has different scanner and adapter capabilities and does not provide DH+ operation. Confirm network roles, chassis, temperature, firmware and approvals before substitution.

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