Schneider Electric 140CPU43412 Processor Controller CPU

Schneider Electric 140CPU43412 is a Modicon Quantum TSX Quantum processor module that serves as the central controller for Quantum 434-series PLC installations, coordinating program execution and communication with backplane I/O modules in a rugged industrial environment. This CPU is part of the TSX Quantum automation platform and is designed to operate as the processing core within a Quantum rack to implement automation logic and real-time control across discrete and process applications. Official compatibility notes identify the 140CPU43412 as programmable with Schneider Electric Concept, placing it in the lineage of legacy Quantum CPUs that can be configured with that engineering tool. Within the 434xx family, there are revisions such as 140CPU43412A, which adds Unity Pro compatibility; related 43412U revisions align with Control Expert software. The 43412A variant lists 896 KB of RAM and a 66 MHz clock in its hardware specification, illustrating the performance and memory characteristics available in the Quantum 434 generation. Typical applications for this family include serial and parallel automation tasks on manufacturing lines, packaging, and material-handling systems where a compact, reliable PLC processor is required to manage logic, timing, and I/O coordination within a modular Quantum chassis. As with other Quantum CPUs, it integrates with Schneider Electric’s broader automation ecosystem, enabling project migration and restoration workflows across legacy tools while providing a proven, field-proven control solution for long-life industrial installations.