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Home > Electrical & Electronics > Electrical Control System > Allen-Bradley 1756-DHRIO ControlLogix DH Plus/RIO Comms Module

Allen-Bradley 1756-DHRIO ControlLogix DH Plus/RIO Comms Module

Guizhou Yuanmiao Automation Equipment Co., Ltd.

1Yr

Allen-Bradley 1756-DHRIO ControlLogix DH Plus/RIO Comms Module thumbnail-1

Allen-Bradley 1756-DHRIO ControlLogix DH Plus/RIO Comms Module thumbnail-2

Allen-Bradley 1756-DHRIO ControlLogix DH Plus/RIO Comms Module thumbnail-3

Allen-Bradley 1756-DHRIO ControlLogix DH Plus/RIO Comms Module photo-1

Allen-Bradley 1756-DHRIO ControlLogix DH Plus/RIO Comms Module photo-2

Allen-Bradley 1756-DHRIO ControlLogix DH Plus/RIO Comms Module photo-3

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other, Global universal model

Condition:

Other, Global universal model

Task:

Other, Global universal model

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Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

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Material Other, Global universal model

Condition Other, Global universal model

Task Other, Global universal model

Mathematical Model Other, Global universal model

Signal Other, Global universal model

Customized Non-Customized

Structure Other, Global universal model

Operating temperature 0°C to 60°C

Humidity 5% - 95% (non - condensing)

Power Input 24V DC

I. Overview

1756-DHRIO is a powerful remote I/O communication module in Rockwell Automation's ControlLogix series, playing a key role in the distributed control architecture of industrial automation systems. Its core function is to realize efficient data exchange between the ControlLogix processor and remote I/O devices, while supporting communication via DeviceNet network, providing a flexible and reliable connection solution for distributed control in industrial sites.

With its excellent compatibility and stability, this module is widely used in industrial scenarios requiring remote control and monitoring, such as distributed production lines in large factories and cross-regional equipment cluster control. It can quickly transmit a large amount of on-site data collected by remote I/O stations to the ControlLogix control system, and at the same time accurately issue instructions from the control system to remote executive devices, realizing centralized management and collaborative control of scattered equipment, which greatly improves the flexibility and expandability of industrial automation systems.

1756-DHRIO needs to be installed in the ControlLogix 1756 series rack, and work together with processor modules, local I/O modules, etc., to build a complete distributed automation control system. Through seamless cooperation with other modules, it breaks through spatial limitations, enabling the control system to easily cover a wide industrial site and provide a solid communication guarantee for the efficient operation of large-scale industrial production.

II. Technical Parameters

Communication Protocol: Supports DeviceNet and remote I/O protocols. The DeviceNet protocol is a low-cost industrial fieldbus protocol based on CAN bus, suitable for connecting low-speed devices such as sensors and actuators; the remote I/O protocol is specially designed for high-speed data transmission between the control system and remote I/O stations. The combination of the two enables the module to flexibly meet the communication needs of different types of devices.

Communication Rate:

In the DeviceNet network, it supports three communication rates: 125kbps, 250kbps, and 500kbps, which can be selected according to the network scale and data transmission requirements to ensure the stability of low-speed device communication.
In remote I/O communication, the rate can reach 230.4kbps, which can meet the rapid transmission of a large amount of remote I/O data and ensure the real-time response of the control system to remote devices.

Interface Type: Equipped with two independent communication interfaces, respectively used to connect the DeviceNet network and the remote I/O link. The interfaces adopt standard connector design, which is convenient for on-site wiring and device connection, improving the convenience of system installation.

Power Requirements: Usually powered by DC power supply, and specific parameters refer to the product data sheet. Its power supply design has good anti-interference ability, which can stably supply power in industrial environments and ensure the continuous and reliable operation of the module.

Environmental Adaptability Range:

Operating Temperature: It can work normally within the temperature range of 0°C to 60°C, and can adapt to common temperature fluctuations in industrial sites. It can maintain stable performance whether in high-temperature production workshops or relatively cool control room environments.
Relative Humidity: It can withstand 5% to 95% non-condensing relative humidity, and can operate reliably in humid industrial environments such as food processing workshops and sewage treatment plants, effectively avoiding communication failures caused by humidity issues.

Remote I/O Capacity: It supports connecting multiple remote I/O stations. The specific number depends on the network configuration and device type. Generally, it can support dozens of remote I/O stations, which can meet the expansion needs of medium and large-scale distributed control systems.

Dimension Specifications: Adopting the standard module size of the ControlLogix series, it perfectly fits with the 1756 series rack. The installation process is simple and convenient, without additional space adaptation, facilitating system integration and maintenance.

III. Functional Features

Dual Protocol Support for Flexible Adaptation: 1756-DHRIO supports both DeviceNet and remote I/O protocols, enabling it to flexibly connect different types of industrial equipment. For low-speed devices such as sensors and small actuators, low-cost connection can be realized through the DeviceNet network; for remote I/O stations requiring high-speed data transmission, an efficient communication link is established through the remote I/O protocol. This dual-protocol support feature greatly improves the module's adaptability in complex industrial environments.

Remote Expansion to Break Limitations: This module can realize long-distance communication between the ControlLogix control system and remote I/O stations, with a maximum communication distance of several kilometers (the specific distance depends on the communication medium and rate). This feature breaks the spatial limitations of traditional control systems, allowing the control system to easily cover all corners of large factories, realize centralized monitoring and control of scattered equipment, and significantly improve the layout flexibility of industrial automation systems.

Redundancy Support to Improve Reliability: In some configurations, it supports communication redundancy function, which can connect remote I/O stations or DeviceNet networks through dual links. When the main communication link fails, it can automatically switch to the backup link to ensure uninterrupted data transmission, effectively improving system reliability, reducing the risk of production shutdown caused by communication failures, and is especially suitable for industrial scenarios with high requirements for system continuity.

Powerful Diagnostic Functions for Easy Maintenance: It has complete self-diagnosis and network diagnosis functions, which can real-time monitor the module's own operating status, communication link quality, and the status of connected devices. When a fault occurs, detailed fault codes and information can be displayed through programming software (such as Studio 5000), helping maintenance personnel quickly locate problems such as link interruption and device offline, greatly shortening the troubleshooting and repair time, and improving the maintenance efficiency of the system.

Easy Integration and Simplified Configuration: As a standard module of the ControlLogix series, 1756-DHRIO has excellent compatibility with other modules in the series and can be seamlessly integrated into the ControlLogix system. Through Rockwell Automation's programming software, engineers can easily complete module parameter configuration, network configuration, and device connection settings without complex programming work, reducing the technical threshold and time cost of system integration.

IV. Application Scenarios

Large Manufacturing Factories: In large factories such as automobile manufacturing and mechanical processing, production equipment is often distributed in a wide workshop, forming multiple scattered production units. 1756-DHRIO can connect the I/O devices of each production unit through the remote I/O protocol, transmit the production data of each unit, such as equipment operating status, processing parameters, material supply status, etc., to the central ControlLogix control system in real time, and at the same time issue central instructions to the executive devices of each unit, realizing centralized management and collaborative production of the entire factory. For example, in an automobile welding workshop, welding robots distributed in different areas are connected to the central control system through remote I/O stations, and 1756-DHRIO ensures the real-time interaction of data such as welding parameters and robot status, ensuring the synchronization and consistency of the welding process.

Metallurgical Industry: The production site of metallurgical enterprises usually includes large equipment such as blast furnaces, converters, and rolling mills, with a wide distribution range. 1756-DHRIO can connect temperature sensors, pressure sensors, valve actuators and other devices distributed in various equipment areas, realize low-cost communication of low-speed devices through the DeviceNet network, and transmit key production data to the central control system through the remote I/O protocol. The control system adjusts equipment operating parameters in real time according to these data, such as the air volume of the blast furnace and the rolling speed of the rolling mill, to ensure the stable progress of the metallurgical production process and improve product quality and production efficiency.

Water Treatment Plants: Equipment such as pools, filtration systems, and dosing devices in water treatment plants are often scattered in different areas, requiring real-time monitoring and control of parameters such as liquid level, water quality, and flow in each area. 1756-DHRIO can connect sensors and actuators in various areas through remote I/O links, transmit liquid level signals, water quality analysis data, etc., to the central control system, and at the same time issue control system instructions, such as valve switching and dosing adjustment, to on-site equipment. In addition, it connects small water pumps, mixers and other equipment through the DeviceNet network to realize low-cost distributed control and ensure the efficient and stable operation of the water treatment process.

Product Tags: Allen-Bradley , 1756-DHRIO