140CPU42402C

The Schneider Electric 140CPU42402C is a high‑reliability CPU processor module engineered for the Modicon Quantum automation platform. Built around a robust 486‑series controller with 2 MB of RAM, this CPU is designed to handle larger logic programs and distributed I/O systems with strong communication capabilities. Its dual Modbus Plus network ports and conformity to IEC programming standards ensure seamless integration and scalability for industrial automation systems.

Technical Specifications

Parameter	Specification
Product Type	CPU Processor Module for PLC
Platform	Modicon Quantum
Processor	486‑Series CPU
Memory	2 MB RAM + Built‑in Flash
Communication Ports	2 × Modbus Plus Networks
Protocol Support	Modbus, Modbus Plus
Programming Standard	IEC 61131‑3
Local I/O Support	Up to standard Quantum rack configuration
Distributed I/O Capability	Remote and multi‑network capable
Watchdog Timer	Integrated
Protective Feature	Conformal Coating (CC)
Operating Temperature	0 °C to 60 °C
Power Supply	Provided via backplane
Mounting	Standard Quantum rack
Dimensions (H×W×D)	250 × 110 × 50 mm (approx., based on legacy Quantum CPU form‑factor)
Weight	Approx. 0.50 kg (500 g)

Typical form‑factor and rack‑mount physical dimensions are consistent with other Quantum CPU modules (250 mm height, 110 mm width, 50 mm depth).

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Application Scenarios

The 140CPU42402C is widely used in industrial automation where reliable processing and extensive I/O networking are key:

Manufacturing automation and material handling
Distributed process control systems
Water/wastewater treatment and utilities
Textile and packaging machinery
Retrofit or legacy Quantum system upgrades

Key Advantages

Enhanced Processing Power: 486‑based controller with 2 MB RAM provides reliable execution for medium‑to‑large automation tasks.
Flexible Networking: Dual Modbus Plus ports support distributed I/O and robust communication across multiple networks.
Industrial Durability: Conformal coating and integrated watchdog ensure stable operation in harsh environments.
Legacy Compatibility: Designed to work seamlessly with Modicon Quantum I/O modules and programming tools (e.g., Unity Pro, Concept).
Efficient Integration: Standard rack‑mount form‑factor and programming compatibility ease deployment and reduce engineering complexity.

Technical FAQs

What type of processor does this CPU use?
It uses a 486‑series processor optimized for PLC logic execution.
How much memory does the 140CPU42402C have?
The module provides 2 MB of RAM with built‑in flash memory.
Which communication protocols are supported?
It supports Modbus and Modbus Plus via two network ports.
What programming standard does it use?
It complies with IEC 61131‑3 programming standards.
Is it suitable for distributed I/O systems?
Yes, dual network ports and memory capacity make it well suited for distributed architectures.
What are the approximate physical dimensions?
Approximately 250 mm (H) × 110 mm (W) × 50 mm (D), typical for Quantum CPUs.
What is the module weight?
About 0.50 kg (500 g).
What temperature range is supported?
It operates between 0 °C and 60 °C.
Does it include protective features?
Yes, conformal coating protects against environmental stress.
What kind of systems is this CPU commonly found in?
It’s ideal for mid‑to‑large manufacturing, process automation, and legacy Quantum control systems.