Schneider Electric 140CPU42401C Quantum CPU 1MB Modbus Plus
Introduction:
The Schneider Electric 140CPU42401C is a high performance CPU module for Modicon Quantum. It features 1 MB of RAM with built-in flash memory. Communication ports include one RS232 and one Modbus Plus channel. The conformal coating protects against harsh industrial environments.
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Technical Specifications
The Schneider Electric 140CPU42401C belongs to the Modicon Quantum automation platform. This product is a high performance CPU module in the controllers category. The module provides powerful processing for complex control systems.
Memory Specifications
| Parameter | Value |
|---|---|
| RAM | 1 MB |
| Built-in Flash Memory | Yes |
| Memory Type | Non-volatile storage |
| Program Backup | Flash memory retains without battery |
Processing Performance
CPU Type: High performance processor.
Execution Time (Boolean): ~0.3 µs for fast logic processing.
Instruction Set: Full IEC 61131-3 for standardized programming.
Watchdog Timer: Integrated for system health monitoring.
Communication Ports
| Port Type | Quantity | Protocol |
|---|---|---|
| RS232 | 1 port | Modbus |
| Modbus Plus | 1 port | Modbus Plus |
Power Specifications
Voltage Supply: 5 V DC from Quantum rack backplane.
Power Draw: Standard Quantum CPU consumption.
No External Supply: Plug and play into backplane.
Environmental Protection
Coating Type: Conformal coated (CC) for moisture and contaminant resistance.
Coating Material: Protects PCB from dust, humidity, and chemicals.
Benefit: Extended reliability in harsh industrial settings.
I/O Compatibility
The 140CPU42401C supports multiple I/O configurations.
| I/O Type | Compatibility |
|---|---|
| Local I/O | Yes, in the same rack |
| Remote I/O | Yes, via coaxial cable |
| Distributed I/O | Yes, via Modbus Plus network |
Physical Specifications
Mounting Type: Rack-mounted in Modicon Quantum backplane.
Module Format: Standard Quantum size.
Weight: 0.85 kg typical.
Environmental Specifications
| Parameter | Range |
|---|---|
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5% to 95% non-condensing |
Compliance and Standards
Standards: UL 508, CSA C22.2 No 142.
Certifications: cUL, CE.
IEC 61131-3: Full instruction set support.
Programming Support
The 140CPU42401C works with these programming software packages.
| Software | Support |
|---|---|
| Concept | Yes |
| ProWORX 32 | Yes |
| Unity Pro | Yes |
Installation Guidelines
Follow these steps to install your Schneider Electric 140CPU42401C CPU module correctly.
Power Down the Rack – Turn off all power to the Quantum backplane.
Select the Slot – Place CPU in leftmost slot or designated processor slot.
Insert the Module – Slide the 140CPU42401C into the selected slot.
Secure the Module – Tighten the top and bottom retaining screws.
Connect RS232 – Attach programming cable to the RS232 port.
Connect Modbus Plus – Attach Modbus Plus network cable if used.
Apply Power – Turn on rack power and verify CPU status.
Download Program – Transfer control program from programming software.
Do not exceed 60°C operating temperature. High heat will reduce CPU lifespan.
Communication Port Pinout
RS232 Port (Modbus)
| Pin | Signal | Description |
|---|---|---|
| 2 | RX | Receive data |
| 3 | TX | Transmit data |
| 5 | GND | Signal ground |
Modbus Plus Port
| Parameter | Specification |
|---|---|
| Connector | 9-pin female D-sub |
| Cable Type | Belden 9841 or equivalent |
| Termination | Required at both ends |
| Length | Up to 450 meters per segment |
Package Contents (No Certificates or Warranty Terms)
Your shipment for product number 140CPU42401C includes the following items:
1 x Schneider Electric 140CPU42401C CPU Module
1 x Installation instruction sheet (printed)
1 x Anti-static protective bag for storage
Note: Programming software and communication cables are sold separately.
Frequently Asked Questions (FAQ)
1. What is the program execution speed of the 140CPU42401C?
The 140CPU42401C executes Boolean instructions in approximately 0.3 microseconds. This supports fast control logic and quick response times.
2. Does the 140CPU42401C have built-in flash memory?
Yes. This CPU includes built-in flash memory for program storage. Your program remains safe without a battery backup.
3. What communication protocols does this CPU support?
The 140CPU42401C supports Modbus via RS232 and Modbus Plus via its dedicated port. Use Ethernet with additional communication modules.
4. What does the conformal coating provide for this CPU?
The conformal coating (CC) protects the circuit board from moisture, dust, and chemical contaminants. You get longer life in harsh industrial environments.
5. Is the 140CPU42401C compatible with Unity Pro software?
Yes. The 140CPU42401C works with Unity Pro, Concept, and ProWORX 32. Choose the software that matches your system requirements.
6. What is the purpose of the watchdog timer on this CPU?
The watchdog timer monitors CPU health continuously. It triggers a fault if the processor stops responding correctly.
Why Choose This Model?
The Schneider Electric 140CPU42401C delivers high performance processing for Modicon Quantum systems. Its 1 MB RAM handles large control programs with complex data structures. The 0.3 µs Boolean execution provides fast ladder logic processing for time critical applications. The Modbus Plus port integrates with existing peer to peer networks. The RS232 port connects directly to programming terminals and HMI devices. The conformal coating resists moisture and contaminants in food, chemical, and outdoor installations. The full IEC 61131-3 instruction set supports structured text, function block, and ladder logic programming. Choose this 140CPU42401C for manufacturing lines, process control, water treatment, material handling, and any application requiring a high performance Quantum processor.