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Allen‑Bradley 1747-L551 Product Overview

Oct 21, 2025 Allen‑Bradley

The 1747-L551 is an Ethernet communication module that allows the ControlLogix controller to exchange data with other devices or systems over an Ethernet network.This module provides high-speed,reliable data communication and supports multiple communication protocols such as EtherNet/IP(Industrial Ethernet Protocol)to meet the needs of industrial automation and control systems.

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Main Functions

Ethernet Communication:The 1747-L551 module supports Ethernet communication,allowing the controller to transfer and exchange data with other devices on the network(such as PLC,HMI,server,etc.).

EtherNet/IP Protocol Support:The module supports the EtherNet/IP protocol,which is an Ethernet communication protocol designed for industrial environments with high performance,reliability and security.

Data exchange:The 1747-L551 module can be used to realize data exchange between the controller and sensors,actuators,other controllers or host computers to achieve integration and coordination of automated control systems.

Network configuration and management:The module supports network configuration and management functions,allowing users to remotely configure,monitor and diagnose the controller through the network.

Scalability:The 1747-L551 module has good scalability and can be used in combination with other Allen-Bradley Logix series modules to meet the needs of automated control systems of different scales and complexities.

Application areas

The 1747-L551 module is widely used in industrial automation and control systems,especially in situations where high-speed and reliable data communication is required.The following are some typical application areas

Manufacturing:In the manufacturing industry,the 1747-L551 module can be used to realize equipment monitoring,data acquisition and remote control on the production line.

Process industry:In process industries such as chemical,petroleum,and natural gas,the module can be used to realize automated control and optimization of production processes.

Infrastructure:In the fields of power,water conservancy,transportation and other infrastructure,the 1747-L551 module can be used to achieve remote monitoring and management of equipment.

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Technical Specifications

The specific technical specifications of the 1747-L551 module may include but are not limited to the following aspects

Communication protocol:EtherNet/IP

Network interface:RJ-45 Ethernet interface

Transmission rate:10/100 Mbps

Working environment:Industrial-grade temperature and humidity range

Power requirements:Depends on the specific model,usually shares power with the ControlLogix controller

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