WhatsApp: +86 16626708626
Email: 
Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric (Modicon) |
| Part Number | 140CPU11303 |
| Processor Type | 80386 (20 MHz) |
| User Memory Capacity | 512 KB RAM (Battery-backed), 256 KB Flash Memory |
| Execution Time | 0.3 to 0.5 μs per logic instruction |
| Communication Ports | 1 x Modbus (RS-232), 1 x Modbus Plus (RS-485 network port) |
| Max I/O Capacity | Supports up to 64 local I/O modules across backplanes |
| Bus Current Requirement | 1.2 A at 5.1 V DC (From backplane supply) |
| Clock/Calendar | Integrated real-time clock backed by internal lithium battery |
| Programming Environment | Concept, ProWORX 32, Modsoft |
Product Introduction & Supply Chain Strategy
This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability. The Schneider Modicon 140CPU11303 Processor Module serves as the main logic engine for Modicon Quantum automation racks, executing ladder logic and function blocks while managing Modbus Plus field communications.
From a Total Cost of Ownership (TCO) perspective, securing a verified New Surplus 140CPU11303 module is an essential safeguard against unexpected system shutdowns. Because Schneider Electric has phased out legacy Quantum CPU production, waiting for an emergency CPU replacement on the open market can cause weeks of lead time variability and severe plant downtime. Keeping 1 unit in local buffer stock ensures instant swap capability while avoiding the corrupt memory registers, bad lithium battery contacts, and intermittent bus faults common in cheap refurbished options.
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Execute Lock-Out/Tag-Out (LOTO) procedures on the Modicon Quantum rack power supply unit.
- Strap on a grounded anti-static wrist band connected to the panel enclosure chassis.
- Perform a full backup of the existing PLC program, register values, and Modbus Plus node address settings via Concept or ProWORX 32 software.
Stage 2: Removal
- Disconnect the Modbus RS-232 serial cable and Modbus Plus network connector from the front faceplate ports.
- Depress the top and bottom module release tabs on the CPU slot.
- Tilt the CPU forward slightly, lift it off the lower backplane mounting rail, and immediately place it inside an ESD-shielded bag.
Stage 3: Installation (Clone & Seat)
- Ensure the lithium memory retention battery is correctly installed on the side panel of the new 140CPU11303 module.
- Hook the lower rear notch of the CPU module onto the Quantum backplane rail in slot 2 or 3 (adjacent to the PSU).
- Pivot the CPU upward and press firmly until both top and bottom latches snap flush into place. Reconnect the Modbus and Modbus Plus communication cables.
Stage 4: Power-On & Testing
- Re-energize the Quantum backplane power supply module.
- Verify that the front-panel PWR and READY LEDs illuminate solid green, and the BAT light remains off.
- Connect via programming software, download the application logic, and switch the processor state to RUN. Confirm that the RUN LED lights up solid green.
140CPU11303
140CPU11303
Firmware/Software Versions & Upgrade Notes
- Software Compatibility: Compatible with Concept V2.1 or later, ProWORX 32, and legacy Modsoft environments.
- Exec Firmware Revision: Hardware Rev 01 / Exec Revision 1.x.
- Firmware Swap Warning: Ensure that the Exec firmware version loaded on the 140CPU11303 matches the project target hardware settings in your programming software. Downloading a logic file configured for a higher-tier CPU (e.g., 140CPU43412A) to a 140CPU11303 will fail due to memory map limits. Always archive the original CPU firmware image prior to hardware replacement.
Frequently Asked Questions (FAQ)
Is this Schneider Modicon 140CPU11303 module 100% Genuine New Surplus? Yes. This processor module is 100% Genuine New Surplus. It has never seen operational runtime inside an industrial plant and has been preserved in anti-static storage. We enforce a strict zero-tolerance policy against second-hand, pulled, or refurbished components.
Why pay more for New Surplus instead of a cheaper refurbished 140CPU11303? Refurbished PLC processors often suffer from degraded RAM chips, leaky memory retention capacitors, or solder joint fatigue that causes random CPU halts under ambient temperature spikes. Investing in New Surplus guarantees clean component traces, factory-fresh processing logic, and long-term operating stability.
What is the OEM lifecycle status for the Modicon 140CPU11303? The 140CPU11303 is an obsolete part as Schneider Electric has shifted platform support toward the Modicon M580 PAC family. Sourcing New Surplus units allows facility managers to extend the operational lifespan of active Quantum infrastructure without incurring massive capital costs for full PLC migration.
Will I lose my application program when I turn off power to replace the CPU? Yes, unless you have backed up the project. The 140CPU11303 relies on volatile RAM backed up by an internal lithium battery. Always upload and save the active application program to a PC before pulling a processor. Once the new CPU is installed, download the program file to restore tool operation.
What warranty coverage comes with this part? Unlike short 30-day warranties typical for used surplus parts, our New Surplus 140CPU11303 CPU includes a full 1-year functional replacement warranty backed by complete static and power-on QC testing.
