NUM 204157 Programmable Logic Controller Module

The NUM 204157 Programmable Logic Controller Module is a PLC module from NUM (Rockwell Automation) used to implement programmable logic within industrial automation systems, serving as a compact yet capable building block for control panels and machinery. Its part number is 204157, identifying it within the NUM PLC module lineup and enabling reliable cataloging, ordering, and integration with compatible controller hardware across backplanes and rack-based architectures. As a PLC module, it is designed to execute ladder logic and sequence control programs, monitor and respond to input signals, coordinate outputs to drive actuators, and interface with other modules for data exchange and process control in manufacturing environments. Users typically deploy this type of module as part of a broader NUM control system, pairing it with power supplies, I/O modules, communication interfaces, and appropriate enclosure hardware to build a complete, scalable automation solution. In practice, modules like 204157 are selected to match existing system architectures and procurement ecosystems within industrial facilities that rely on NUM components for consistent performance and maintenance.