Allen-Bradley 1756-M08SEG Discrete I/O Module

The Allen-Bradley 1756-M08SEG is an eight-axis SERCOS motion-control module designed for Rockwell Automation ControlLogix systems (Series 2). It provides a SERCOS interface that lets a ControlLogix controller drive external servo drives over a SERCOS network, enabling coordinated motion across up to eight axes within a single 1756 backplane slot. Catalog number 1756-M08SEG (Series 2) is noted as Extended Pack Profile compliant, expanding motion capabilities within the 1756 family. This module functions as the motion interface in a ControlLogix chassis and requires external servo drives to execute drive-level control, since it does not embed drives itself. Typical applications involve multi-axis automation tasks where synchronized motion across multiple axes is required, with performance and timing governed by the connected SERCOS-compatible servo drives and the controller program. When configured in a 1756-based system, it works with Rockwell Automation motion software and configuration tools to define axis parameters and sequencing for complex motion tasks.