Name: Schneider 140CPU43412 Modicon Quantum CPU Module – 486 Processor, 896 kB RAM Controller - MASSIVE
SKU: Schneider 140CPU43412

Schneider 140CPU43412 Modicon Quantum CPU Module – 486 Processor, 896 kB RAM Controller

Brand ABB

Model Schneider 140CPU43412

The Schneider Electric 140CPU43412 is a high-performance processor module engineered for the Modicon Quantum automation platform, one of the most widely deployed PLC families in industrial process and discrete control environments. Positioned as the central intelligence of a Quantum backplane, the 140CPU43412 executes user control logic, coordinates remote and distributed I/O, manages communication with supervisory systems, and enforces deterministic real-time performance across demanding manufacturing and infrastructure applications. Built on a proven 486-class processing core clocked at 66 MHz, it delivers the reliable scan-cycle behavior that Quantum systems have been trusted for since their introduction.

As part of the Modicon Quantum family from Schneider Electric, the 140CPU43412 is fully programmable through Concept, ProWORX32, and IEC 61131-3 compliant toolchains, giving engineering teams the flexibility to maintain existing legacy applications or develop new logic using ladder diagram, function block diagram, structured text, and sequential function chart languages. With 896 kB of internal RAM and support for up to 61 Ethernet-connected devices across eight remote I/O racks, the module scales comfortably from single-rack machine control to multi-rack process installations.

The value of the Schneider 140CPU43412 lies in its seamless compatibility with installed Quantum infrastructure and its role as a proven lifecycle replacement CPU for plants that continue to operate this battle-tested platform. Certified to international quality and safety standards and stocked through specialist distributors, it remains a dependable choice for brownfield modernization, spare-part programs, and system extensions where consistency with the existing Quantum ecosystem is paramount.

Request Price

Description

Technical Specifications

Parameter Name	Parameter Value
Product Model	140CPU43412A
Manufacturer	Schneider Electric
Product Type	PLC Processor Module / Quantum CPU
Platform	Modicon Quantum Automation Platform
Processor	486-class, 66 MHz clock frequency
User Memory	896 kB internal RAM, 8 MB flash
Ethernet Capacity	Up to 61 Ethernet devices
I/O Architecture	8 remote I/O racks via Quantum backplane
Communication Ports	Modbus (2 x serial), Modbus Plus, TCP/IP Ethernet (optional module)
Programming Software	Concept, ProWORX32, IEC 61131-3 languages
Battery	1.2 Ah lithium backup battery
Mounting	Quantum backplane (2, 3, 4, 6-slot chassis compatible)
Status	Discontinued by manufacturer (Dec 2017); stocked as lifecycle replacement

Main Features and Advantages

Deterministic processing core: The Schneider Electric 140CPU43412 is built around a 486-class processor running at 66 MHz, engineered specifically for deterministic PLC scan-cycle execution. This architecture guarantees consistent response times for time-critical control loops, interlocks, and safety logic, which is essential in applications where predictable behavior directly impacts process integrity and personnel safety.

Comprehensive communication capability: The 140CPU43412 offers two integrated Modbus serial ports and a native Modbus Plus port on-board, providing dependable field-level connectivity for HMIs, drives, and legacy devices. Through the addition of an Ethernet module, the CPU supports Modbus TCP/IP for up to 61 networked devices, allowing it to bridge classical serial installations with modern SCADA, MES, and IIoT architectures without replacing the controller.

Scalable I/O architecture: Designed for the modular Quantum backplane, the 140CPU43412 supports up to eight remote I/O racks distributed across the plant, enabling control of large, geographically dispersed processes from a single processor. This capability reduces wiring costs and simplifies system expansion as production requirements grow.

Hot-standby readiness: When paired with Schneider’s Quantum hot-standby modules, the Schneider 140CPU43412 can be configured into a redundant CPU pair that synchronizes application data continuously, providing automatic switchover in the event of a primary-controller failure and protecting uptime in continuous-process industries.

Backward-compatible programming: Full support for Concept and ProWORX32 development environments, together with IEC 61131-3 programming languages, means existing Quantum applications can be migrated, maintained, or extended on the 140CPU43412 without re-engineering, protecting prior software investment and reducing commissioning risk.