The Schneider Electric 140CPU43412AR is a high-performance Modicon Quantum PLC CPU module designed for advanced industrial automation control systems. As part of the Quantum architecture, it serves as the central processing unit responsible for executing control logic, managing distributed I/O, and coordinating industrial communication networks in real time.
This model is widely used in legacy yet mission-critical environments where system stability, deterministic control, and long lifecycle support are essential. The “AR” revision is commonly associated with enhanced firmware handling and system compatibility improvements within Quantum Hot Standby configurations.
Engineered for continuous operation, the 140CPU43412AR remains a dependable choice for industries that prioritize uptime over platform modernization.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Schneider Electric |
| Model | 140CPU43412AR |
| Product Type | CPU / Processor Module |
| Series | Modicon Quantum |
| Processor Architecture | 80486-class industrial CPU |
| Clock Frequency | ~66 MHz |
| Memory | Up to ~896 KB RAM (variant dependent) |
| Program Memory | ~1–2 MB Flash (system dependent) |
| Hot Standby Support | Yes (Quantum redundant architecture) |
| Communication Ports | Modbus RS-232, Modbus Plus |
| Network Expansion | Supports multiple option modules (NOM/NOE/CR/NMS) |
| Max I/O Capacity | Up to 256 local I/O points / distributed expansion |
| Remote I/O Drops | Up to 31 drops |
| Power Consumption | ~1.2 A backplane load |
| Battery Backup | Lithium battery (memory retention) |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5% – 95% non-condensing |
| Weight | ~0.5 – 0.8 kg |
| Dimensions | Approx. 250 mm × 100 mm × 50 mm |
The module is engineered for stable deterministic execution, ensuring reliable control performance even under heavy industrial network loads.
Recommended Related Models
- Schneider 140CPU43412A – Standard Quantum CPU variant
- Schneider 140CPU67160 – High-performance Quantum processor module
- Schneider 140CRP93100 – Remote I/O head module
- Schneider 140CPS52400C – Redundant power supply module
- Schneider Quantum 140XBP backplane series – Rack infrastructure system
Popular Schneider Electric Models
- Schneider M580 BMEP58 series – Modern Ethernet-based PLC platform
- Schneider M340 BMXP342020 – Compact PLC CPU
- Schneider 140CPU65150 – Advanced Quantum controller
- Schneider 140DDI35300 – Digital input module
- Schneider 140DAO84000 – Analog output module
These platforms represent both legacy Quantum and modern Modicon architectures used across global automation systems.
