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Product Introduction: High-performance Backbone Network

The Modicon Quantum 140 series mainly refers to the I/O backplane modules and related components that constitute the backbone of the Quantum PLC system.  These components are renowned for their modularity, reliability and processing capabilities, supporting a variety of I/O modules, cpus, power supplies and communication interfaces.

Specifically designed for complex automation environments, the Quantum 140 series supports advanced features such as:

High-speed I/O processing

Modbus Plus and Ethernet connection

Hot standby redundancy

Motion control ability

These features make the system highly suitable for industries such as oil and gas, power generation, and large-scale manufacturing.

Phasing out: From flagship to traditional

In July 2018, Schneider Electric announced the gradual discontinuation of its Quantum and Premium PLC product lines, including the 140 series.  By the end of 2018, these products had been discontinued for new projects and only transitioned to spare parts support.  Schneider recommends migrating to modern alternatives such as the Modicon M580 ePAC platform, which offers better performance, network security, and local integration with Schneider's EcoStruxure™ architecture.

This strategic shift reflects broader industry trends, with a focus on digital transformation, IT/OT convergence, and real-time data integration.

Current market situation: still in action

Although the official has gradually phased out the Quantum 140 system, many industries still continue to use it due to its stability, low maintenance cost and high availability.  Schneider Electric continues to provide spare parts, maintenance services and migration tools for these systems to ensure uptime and a smooth transition.

End users typically encounter the following scenarios:

Maintain the existing quantum 140 system as long as the components remain reliable.

As part of digital modernization, the migration to M580 or newer platforms has begun in phases.

Realize a hybrid system where new and old architectures coexist, simplify the learning curve and minimize downtime to the greatest extent.

Industry Outlook: Leading Transformation

As the pace of optimization driven by smart manufacturing, industrial Internet of Things and artificial intelligence accelerates, the demand for open, scalable and cybersecurity automated systems is stronger than ever before.  Schneider Electric continues to advance its "green premium" and "Use Better, Use Longer, Use Again" sustainable development strategy, encouraging customers to optimize their existing assets while planning for gradual modernization.

For companies that still rely on Quantum 140:

Regularly conduct system health checks and risk assessments.

Consult Schneider certified partners to plan a safe and cost-effective migration.

Leverage Schneider's digital tools and the compatibility features of the M580 to achieve a smooth transition.

Conclusion

The Schneider Modicon Quantum 140 series is a traditional system that defines the era of industrial automation.  Although officially phased out, its robustness and reliability continue to support important global businesses.  As industry moves towards more connected and intelligent systems, new platforms such as Schneider Electric's M580 are set to be launched first, providing a natural upgrade path for the Quantum series.

Whether you are maintaining an aging system or planning the next step of automation, the story of the Quantum 140 series reminds you that reliable engineering can stand the test of time while still being adaptable to the future.

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