Allen-Bradley 1756-MO3SE Motion Output Module

Allen-Bradley 1756-MO3SE is a three-axis SERCOS-interface motion output module for Rockwell Automation's ControlLogix systems. Installed in a 1756 ControlLogix backplane chassis, it translates the controller’s motion commands into three servo channels over the SERCOS network to connected servo drives, enabling synchronized multi-axis positioning from a single CPU. The module is officially described as a 3-Axis SERCOS Interface Servo Module, and Rockwell lists firmware updates for this model (for example, v38.001 for the 1756-M03SE). As part of the 1756 Motion family, the M03SE provides three independent servo axes and is designed to work with SERCOS-enabled drives that are compatible with Rockwell’s ecosystem, including Kinetix servo drives. This module is typically deployed in configurations that require coordinated motion across three axes controlled from a single Logix program, leveraging the 1756 backplane and standard Rockwell diagnostics to monitor status and health of the servo network.