SCHNEIDER CPU61203/110CPU61203 compact PLC CPU

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SCHNEIDER CPU61203/110CPU61203

Schneider Electric CPU61203 / 110CPU61203 – Overview

CPU61203 (110CPU61203) is a compact PLC CPU from the Modicon Micro family used in small-to-medium industrial automation systems. It integrates CPU, power supply, and I/O in one unit, making it popular in legacy machines and compact control panels.

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Basic Identification

• Model: 110CPU61203 / 110-CPU-612-03
• Series: Modicon Micro PLC
• Type: Micro PLC CPU module
• Status: Obsolete / discontinued (widely available as surplus & refurbished)

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Key Features

Integrated “All-in-One” Design

This CPU combines:

• Control processor
• 24 VDC power supply
• Digital + analog I/O
  in a single compact module, simplifying cabinet design and wiring.

24 VDC Industrial Operation

• Designed for standard 24V DC industrial control systems
• Continuous duty rated for long-term operation.

Mixed I/O Capability

Typical built-in I/O (from hardware manual):

• 16 × 24VDC digital inputs
• 12 × 24VDC transistor outputs (FET)
• High-speed counter / interrupt inputs available.

This makes it suitable for sensors, relays, solenoids, and small machine automation.

Compact Installation

• DIN-rail mounting
• Designed for limited control cabinet space.

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Communication & Programming

The CPU supports common PLC programming and networking:

• Ladder Logic / Function Block / Structured Text support
• Communication with HMIs, PLCs, and field devices via industrial protocols.

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Typical Applications

Widely used in legacy equipment and retrofit projects:

Machine automation

• Packaging machines
• Assembly lines
• Material handling systems

Process control

• Chemical / food / pharma processes
• Temperature, pressure, flow regulation

Energy & facility systems

• Small energy monitoring and control systems

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Technical Snapshot

Parameter	Value
Supply voltage	24 VDC
I/O type	Integrated digital + analog
Mounting	DIN rail
Duty rating	Continuous
Controller type	PLC Micro CPU
Weight	~0.5–1.0 kg
Origin	France

(Compiled from multiple distributor and manual sources.)

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Lifecycle Note (Important)

This model belongs to an older Modicon Micro platform and is now obsolete, so it is usually purchased as:

• Surplus stock
• Refurbished spare
• Repair replacement for existing machines