140CPU67261

Modicon Quantum Unity Hot Standby Processor

266 MHz, 3072 kB (3 MB) RAM, Single‑Mode Fiber Ethernet, Standard Coating, 2‑Slot

1. General Information

• Part Number: 140CPU67261

• Manufacturer: Schneider Electric

• Series: Modicon Quantum (Unity Pro XL)

• Type: 32‑bit PowerPC RISC, 266 MHz, with FPU

• On‑board RAM: 3072 kB (3 MB) (1536 kB dedicated data area)

• Flash Memory: 4 MB (firmware/backup)

• Front Panel: Standard (no LCD/keypad)

• Coating: Standard (non‑conformal)

• Slot Occupancy: 2 slots (double width)

• Software: Unity Pro XL (redundancy enabled)

• Status: Discontinued (EOL)

• Hot‑Swappable: Yes

• Key Difference from 67260: Single‑mode fiber (vs multimode) for long‑distance HSBY

• Primary Use: High‑end Hot Standby, large programs, long‑distance fiber redundancy

2. Performance

• Boolean Logic: ~10.28 K instructions/ms

• Mixed Logic: ~10.07 K instructions/ms

• Floating‑point: Supported (on‑board FPU)

3. Memory & Expansion

• Internal RAM: 3072 kB (3 MB)

• PCMCIA (2 slots):

  • Program memory: up to 7 MB

  • File storage: up to 8 MB

• Backup: 3 V lithium battery (≈10 years)

• RTC: Integrated, battery‑backed

4. I/O Capacity

• Distributed Digital I/O: 8,000 In / 8,000 Out (MB+)

• Remote I/O (max): 31,744 points

• Distributed Stations: 63 (Modbus Plus)

• Remote Stations: 31 (per RIO bus)

• Local Expansion Racks: up to 2

5. Communications (Integrated)

• 1 × Modbus Plus (MB+): D‑Sub 9, 1 Mbps

• 1 × Single‑Mode Fiber Ethernet (SC): 100 Mbps, Modbus TCP/IP, up to 20 km, dedicated HSBY sync

• 1 × Modbus RTU (RS‑232/485): D‑Sub 9, ASCII/RTU

• 1 × USB 1.1: Programming & data logging

• Expansion Slots: 6 (Ethernet, Profibus DP, etc.)

6. Key Features

• 3 MB RAM: Largest standard Quantum HSBY CPU

• Single‑mode fiber: Long‑distance redundant link (up to 20 km)

• Double slot: Higher power, better cooling for large programs

• FPU included: Complex process control math

• High‑density HSBY: Fast sync, large data mirroring

7. Electrical

• Backplane Current: 2.76 A @ 5.1 VDC

• Power Consumption: ~14 W

8. Environmental

• Operating Temp: 0 °C to +60 °C

• Storage Temp: −40 °C to +85 °C

• Humidity: 5–95% RH, non‑condensing

• Altitude: 5,000 m

9. Certifications

10. Model Differences (Quantum HSBY Fiber CPU)

• 140CPU67261: 3 MB, single‑mode fiber, standard coating, 2‑slot

• 140CPU67261C: 3 MB, single‑mode fiber, conformal coated, 2‑slot

• 140CPU67260: 3 MB, multimode fiber, standard coating, 2‑slot

• 140CPU67260C: 3 MB, multimode fiber, conformal coated, 2‑slot

• 140CPU67160S: 1 MB, multimode fiber, LCD/keypad red, 2‑slot