Configured for deterministic logic execution in the Modicon Quantum automation platform, the Schneider Electric 140CPU65260 (140CPU65260 Unity processor) provides direct physical and electrical processing performance for high-density discrete and analog I/O control loops.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 140CPU65260 |
| Brand | Schneider Electric |
| Origin | France |
| Weight | 1.4 kg |
| Dimensions | 32.5×18.5x11cm |
| Operating Temp | Not specified |
| Power Consumption | 2760 mA backplane current |
| Clock Frequency | 266 MHz |
| Memory | 3072 kB internal RAM; expandable 8 MB file storage; expandable 7168 kB program memory via PCMCIA |
| Discrete I/O Capacity | 8000 inputs / 8000 outputs (distributed); 31744 inputs / 31744 outputs (remote); unlimited local (max 26 slots) |
| Analog I/O Capacity | Unlimited local (max 26 slots); 500 inputs / 500 outputs (distributed); 1984 inputs / 1984 outputs (remote) |
| Communication Ports | 1 Ethernet TCP/IP, 1 Modbus, 1 Modbus Plus, 1 USB, 1 SUB-D 9 Modbus Plus, 1 RJ45 Modbus, 1 RJ45 Ethernet, 1 MT-RJ fiber optic |
| Execution Time | 0.0525–0.075 µs Boolean; 0.045–0.06 µs word; 0.045–0.06 µs fixed-point; 0.4–0.5 µs floating point |
| System Overhead | 1 ms master task; 0.2 ms fast task |
Backplane Bus Communication and Firmware Flash Compatibility
The 140CPU65260 integrates directly into the Quantum backplane bus, ensuring deterministic data exchange between processor and I/O modules without throughput degradation under full slot occupancy. Firmware revisions are field-upgradable via flash memory, maintaining backward compatibility with existing application object code while supporting expanded memory configurations through PCMCIA-based storage extensions.
Frequently Asked Questions
Q: Does the 140CPU65260 support hot-swap replacement without system downtime?
A: No. The module requires a controlled shutdown before removal to prevent loss of volatile process data stored in internal RAM.
Q: What is the maximum number of remote I/O stations supported in a single configuration?
A: The processor supports up to 31 remote I/O stations across two remote racks.
Q: Are fiber optic connections required for Hot Standby operation?
A: Yes. The MT-RJ fiber optic port must be used to interconnect primary and secondary CPUs for redundant data synchronization.
Field Installation Guidelines
Mount the 140CPU65260 in the leftmost slot of the local Quantum rack to ensure correct backplane addressing. Use shielded twisted-pair cabling for all serial and Ethernet connections, grounding the shield at the rack chassis only. Verify key-switch position prior to applying power to avoid unintended memory writes. Ensure proper ventilation clearance around the processor to maintain thermal stability during continuous 266 MHz operation.
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