Discontinued PLC Modules

Discontinued PLC modules are still widely used in industrial automation systems that remain in operation long after original hardware has been retired by the manufacturer. Many facilities continue running legacy PLC platforms because the machines remain reliable and replacing an entire control system can be costly and time-consuming.

PLG Automation supplies discontinued PLC modules from major industrial manufacturers including Allen-Bradley, Siemens, Schneider Electric, Mitsubishi, Omron, ABB, GE Fanuc, Eaton, and Square D. Our spare part inventory includes legacy controllers, I/O modules, communication processors, and power supply modules used in older automation platforms that are still common across manufacturing facilities.

Maintenance engineers and system integrators frequently source discontinued PLC modules when repairing failed hardware, supporting aging control panels, or maintaining compatibility with existing automation systems. These modules are commonly used in legacy platforms such as Allen-Bradley PLC-5 and SLC 500 systems, Siemens SIMATIC S7 controllers, Schneider Modicon PLCs, Mitsubishi MELSEC controllers, Omron SYSMAC platforms, ABB automation systems, and GE Fanuc PLC hardware.

PLG Automation provides fast RFQ support and sourcing for discontinued PLC modules. If a specific module cannot be located on our website, our team can often help locate surplus or hard-to-find industrial automation components.