The Allen-Bradley 1769-SDN is a DeviceNet Scanner module designed for use with the CompactLogix controller platform. This communication module acts as a bridge between the CompactLogix system and a DeviceNet network, allowing the controller to manage and exchange data with various DeviceNet-compliant field devices such as sensors, actuators, drives, and operator interfaces. It supports high-speed communication and provides efficient I/O data transfer, making it a critical component for distributed control architectures.
Features
Provides a single DeviceNet channel for network communication.
Integrates directly into the CompactLogix 1769 I/O platform.
Supports standard DeviceNet baud rates (125, 250, and 500 kbps).
Equipped with a 5-pin male Phoenix connector for reliable network cabling.
Facilitates seamless integration of distributed I/O and intelligent field devices.
Applications
The 1769-SDN is typically utilized in industrial automation environments requiring decentralized control. Common applications include material handling systems, packaging machinery, assembly lines, and process control systems where DeviceNet is the preferred fieldbus protocol for connecting remote I/O and motor control components to the main PLC.
Technical Specifications
Product Model
1769-SDN
Module Type
DeviceNet Scanner
Platform
CompactLogix
Communication Channels
1
Connector Type
5-pin Male Phoenix
Manufacturer
Allen-Bradley
Installation Guidelines
Ensure the controller power is removed before installing or removing the module from the I/O bank.
Mount the module on a standard DIN rail or panel mount as specified by the CompactLogix system layout.
Use shielded twisted-pair cable for DeviceNet network connections to minimize EMI interference.
Ensure proper grounding of the DeviceNet network cable shield at the power supply or as per the network topology requirements.
Verify that the module is securely latched into the adjacent I/O module or controller to ensure proper backplane communication.
Handle with ESD precautions to prevent damage to internal electronic components.
FAQ
What is the primary function of the 1769-SDN?
The 1769-SDN is a scanner module that enables a CompactLogix controller to act as a master on a DeviceNet network, allowing it to read and write data to remote DeviceNet slave devices.
How is the module powered?
The module receives its backplane power from the CompactLogix power supply, while the DeviceNet network itself requires a separate 24V DC power source connected via the network trunk line.
