Schneider Modicon M221

Features:

✅ Compact all-in-one design with embedded I/O
✅ Available in brick and book form factors
✅ 2 built-in analog inputs (model dependent)
✅ High-speed counters and pulse train outputs (up to 100 kHz)
✅ Built-in Ethernet, serial (RS-232/RS-485), and USB ports
✅ SD card slot for program backup and restore
✅ DIN rail mounting with IP20 protection

The EcoStruxure Machine controller is the Modicon M221 logic controller. With all the features and capabilities you need to create machines that will increase your profitability, Schneider Electric’s EcoStruxure MachineTM is an easy-to-use machine automation solution. EcoStruxure Machine is a comprehensive machine building solution that offers advantages throughout the machine life cycle, from design and development to commissioning and maintenance.

Logic Controller – Modicon M221
Programmable logic controller for hardwired architectures

The Modicon M221 is a compact, high-performance Nano PLC tailored for small to mid-range machine automation. It features an embedded Ethernet port, SD card slot, USB programming interface, and supports TM3 expansion I/O modules. It’s programmed using EcoStruxure Machine Expert – Basic (formerly SoMachine Basic), available free of charge.

Compact, Fast, and Flexible Control for Small Machines

The Modicon M221 from Schneider Electric is a powerful and cost-effective PLC designed for compact machine automation. Part of the Modicon Machine Expert (SoMachine) platform, the M221 provides fast processing, versatile communication options, and easy-to-use programming tools—making it ideal for OEMs and machine builders seeking high-performance control in a small footprint.

Key Features:

High-Speed Processing
Fast program execution for responsive machine control, enabling short cycle times and efficient operation.
Flexible Form Factors
Available in book (slim) and compact (brick) formats to suit space-constrained panels or modular control layouts.
Built-In Connectivity
Integrated Ethernet, USB, serial ports, and CANopen (on certain models), allowing easy integration with HMIs, drives, and sensors.
Expandable I/O
Supports up to 7 local expansion modules, including digital, analog, and specialty I/Os.
Web Server Functionality
Built-in web server for remote diagnostics, monitoring, and control via standard browsers—no SCADA required.
Programming with EcoStruxure Machine Expert – Basic
Intuitive programming environment with ladder logic, function block, and structured text support.

Technical Data

Schneider Modicon M221 Series

🔹 M221 Series ▾

Embedded Digital I/O Up to 40 inputs/outputs (varies by model)

Analog Inputs 2 built‑in analog inputs

High‑Speed I/O Up to 4 fast inputs, 2 fast pulse outputs

Communications Ethernet, USB programming, Modbus RTU via serial ports

I/O Expansion TM3 and TM2 cartridge modules via side slot

Memory RAM ~640 KB, Flash ~2 MB, backup via SD‑card

Programming Platform EcoStruxure Machine Expert – Basic (IEC 61131‑3)

Form Factor Brick or book format; DIN‑rail, IP20 rated

Dimensions 95–163 mm (W) × 90 mm (H) × 70 mm (D), depending on I/O count