Schneider 140CPU42402C CPU Module | 32-bit 66MHz

Processing Power for Modicon Quantum Systems

The Schneider 140CPU42402C serves as a powerful CPU for Modicon Quantum automation platforms. This module executes control logic and manages I/O communication efficiently. It suits medium to large-scale industrial control applications.

Technical Specifications

Parameter	Specification
Model	140CPU42402C
Category	CPU Module
Height	123.9 mm
Width	40.1 mm
Depth	144.1 mm
Weight	0.380 kg
Processor	32-bit at 66 MHz
Program Memory	256 KB RAM (battery-backed)
Data Memory	256 KB RAM
User Program Size	128 KB max
Execution Speed	0.25 µs per boolean instruction
Digital I/O Capacity	2048 channels
Analog I/O Capacity	512 channels
Number of Racks	16 (local + remote)
Communication Ports	1 x Modbus (RS-232), 1 x USB (mini-B)
Protocol Support	Modbus RTU, Modbus Plus (optional)
Status Indicators	4 x LEDs (PWR, RUN, ERR, COM)
Internal Components	1 CPU board, 1 RAM chip, 1 flash chip, 1 battery, 1 heatsink
Energy Storage	1200 mAh lithium battery (RAM backup)

Processor Architecture and Memory Organization

The 140CPU42402C uses a 32-bit processor running at 66 MHz. This processor executes boolean instructions in just 0.25 microseconds. The module stores user programs in 256 KB of battery-backed RAM memory. It keeps runtime data in another 256 KB of high-speed RAM. The Schneider 140CPU42402C supports user programs up to 128 KB in size. Its processing speed suits high-speed packaging and assembly line applications.

I/O Capacity and System Expansion

This CPU module manages up to 2048 digital I/O channels across 16 racks. It also handles 512 analog I/O channels for process measurement. The 140CPU42402C supports both local and remote I/O configurations. A built-in Modbus RS-232 port connects to HMIs and drives. A USB port provides high-speed program download and online monitoring. An optional Modbus Plus module fits into the dedicated slot.

Programming and Software Compatibility

The Schneider 140CPU42402C programs using Concept or ProWORX software platforms. This module supports ladder diagram, instruction list, and structured text languages. It also handles sequential function chart (SFC) for complex sequences. The CPU stores complete application documentation in its memory. You can program and debug online without stopping the controller. The 140CPU42402C supports up to 1024 function blocks in a single program.

Physical Dimensions and Installation Guidelines

The Schneider 140CPU42402C weighs 0.380 kilograms for secure rack mounting. Its height measures 123.9mm, width 40.1mm, and depth 144.1mm. Install this CPU module in the first slot of the Quantum rack. The module consumes 5.2 watts from the backplane power supply. It operates reliably from 0°C to +60°C ambient temperature. Leave 50mm clearance above and below for proper airflow.

Energy Storage and Battery Maintenance

The 140CPU42402C uses a 1200 mAh lithium battery for RAM program backup. This battery preserves user logic and data tables during power loss. The battery lasts approximately five years under normal conditions. Replace the battery when the low battery LED indicator lights up. Always replace the battery with the Schneider 140CPU42402C powered on. The CPU loses no program during battery replacement with power applied.