American Industrial Supply Co. is a practical place to buy or sell new and used PLC processors, with a dedicated category that helps industrial buyers and sellers find relevant automation equipment. Compare available options for your application, review product information, and explore processor families from Allen-Bradley, Allen Bradley, Siemens, and Schneider Electric.
A programmable logic controller (PLC) processor runs the control program and interprets input signals to direct connected outputs. Used in manufacturing, packaging, material handling, utilities, and process control, PLC processors coordinate equipment such as motors, conveyors, pumps, and production machinery. When selecting a processor, consider its PLC family, memory, processing capacity, communication options, I/O compatibility, and fit with the existing control system. Buyers often search for Allen-Bradley ControlLogix and CompactLogix, Siemens SIMATIC S7, and Schneider Electric Modicon processors.
The cost of new and used PLC processors varies with brand, model, availability, condition, features, and compatibility with a particular system. Older or less common models may have different market availability and pricing than current-generation processors. To compare options, identify the required model or compatible series, consider the needs of the application, and review current listings for the equipment you need.
PLC technology emerged in the late 1960s as manufacturers sought a more adaptable alternative to hard-wired relay control. Early programmable controllers handled basic logic; advances in microprocessors later brought greater speed, memory, communication capabilities, and support for more complex automation. Today’s PLC processors range from compact controllers for smaller machines to modular platforms used in large, interconnected industrial systems.
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