140CPU53414 (Modicon Quantum CPU)

General

• Manufacturer: Schneider Electric

• Part No: 140CPU53414 (variants: A / B / U / UC / BC)

• Series: Modicon Quantum (high‑end legacy PLC)

• Type: 32‑bit 80486 with math coprocessor

• Coating: Standard; BC = conformal coated

• Software: Concept, ProWORX 32; U = Unity‑compatible

• Status: Discontinued / Legacy

• Positioning: Higher performance than 43412 series

Core & Memory

• Processor: 80486, 100 MHz (with FPU)

• RAM: 2972 KB (≈2.9 MB)

• Flash: Not specified (firmware in flash)

• Logic speed: 0.1–0.5 ms / 1K instructions (LL984)

• Watchdog: 250 ms (hardware)

• RTC: Yes

• Battery: 3 V lithium, 1.2 Ah, 10 years life

I/O Capacity

• Local I/O: 64 In / 64 Out (max)

• Distributed I/O: 500 In / 500 Out per network

• Remote drops: 31 remote / 63 distributed

• Local racks: Up to 2

Communication Interfaces

• 1 × Modbus Plus (MB+) RS485 (DB9)

• 2 × Modbus RS232 (DB9)

• 2 expansion slots (for Ethernet, Profibus DP, etc.)

Electrical

• Backplane current: 1.25 A @ 5.1 VDC

• Power consumption: ~6.25 W

Environmental

• Operating temp: 0 °C ~ +60 °C

• Storage temp: −40 °C ~ +85 °C

• Humidity: 5–95% RH, non‑condensing

• Altitude: Up to 5000 m

• BC variant: conformal coated (Humiseal 1A33)

Mechanical

• Slot: 1 standard Quantum slot

• Hot swap: Yes

• Weight: 0.85 kg

Key Differences vs 140CPU43412

• CPU: 100 MHz 80486 with FPU (vs 66 MHz 80486)

• RAM: 2972 KB (vs 1056 KB)

• Speed: ~2–3× faster logic execution

• I/O: Larger distributed I/O capacity

• Target: More complex, math‑intensive applications

Certifications