🏭 About CONTROLLINO / Company Overview

CONTROLLINO is an industrial PLC platform developed and produced in Spain, designed to merge the ease of Arduino development with the robustness of a certified industrial controller.

• The company strives to create hardware that allows developers to:
• Prototype quickly using Arduino
• Deploy the same code and hardware directly into industrial environments
• Utilize reliable, CE-certified electronics with proper electrical protection, isolation, and surge handling
• Reduce the gap between open-source prototyping and real-world automation hardware
• CONTROLLINO is widely used in Europe for agriculture, industrial control, building automation, and educational systems.

Product Lineup:

• CONTROLLINO MINI
• CONTROLLINO MAXI (featured in this article)
• CONTROLLINO MEGA

VAT 21% = 259 € × 0.21 = 54.39 €   =>   259€ + 54.39€ = 313.39 €

313.39 € × 1,690(KRW) ≈ 529,000(KRW)

🖼️ 1. Product 

CONTROLLINO MAXI brings industrial safety and Arduino compatibility into a single, powerful controller.

🧩 Key Features

• Full Arduino IDE compatibility
• Built-in WIZnet W5100 Ethernet
• Industrial-grade relay outputs
• Protected digital & analog inputs
• RS485 communication
• RTC + Ethernet with shared SPI bus
• DIN-rail mountable enclosure
• 12–24V DC industrial power input
• CE-certified hardware

🖼️ 2. Pinout Diagram

 

A fully integrated multi-I/O controller ready for sensors, relays, RS485 devices, and networked automation.

🖼️ 3. Official Library GitHub Page

 

📎 Official CONTROLLINO Arduino Library:
https://github.com/CONTROLLINO-PLC/CONTROLLINO_Library

The official library maintained by the Spanish development team includes examples for Ethernet, RTC, relay control, and safe I/O handling.

🧰 Getting Started

1. Install the CONTROLLINO Library in Arduino IDE
   https://github.com/CONTROLLINO-PLC/CONTROLLINO_Library
2. Select CONTROLLINO MAXI from the Board Manager
3. Provide 12–24V DC power
4. Connect Ethernet (RJ-45)
5. Upload sample Ethernet/RTC/Relay sketches

If you know Arduino, you can start using MAXI in less than 10 minutes.

🌿 Compatible software

Aduino :

PlatformIO : 

OpenPLC  :

VS code  + VMicro: 

Visuino : https://www.visuino.com/

Atmel studio :

log.CAD : 

LabView : 

🌿 Use Cases

• Smart farming (irrigation, greenhouse control)
• Industrial HVAC, pumps, motors
• Building automation (lighting, energy, ventilation)
• RS485-based field device control
• IoT edge controllers
• PLC education and laboratory training
• Transitioning Arduino prototypes to real industrial deployment

The Controllino-Irrigation GitHub example demonstrates MAXI being used as the core controller for an automated irrigation system.

🧠 Engineering Insights

• Arduino development → industrial deployment with minimal changes
• Reliable W5100 Ethernet implementation
• Shared SPI bus (ETH + RTC) demonstrates proper chip select handling
• CE-certified hardware with surge and isolation protection
• DIN-rail mount for easy cabinet installation
• Built according to European industrial design standards

🔗 Reference Links

• Product page
  https://www.controllino.com/product/controllino-maxi/
• Ethernet Info
  https://www.controllino.com/wp-content/uploads/2018/10/CONTROLLINO-MAXI-Pinout.pdf
• Official Library
  https://github.com/CONTROLLINO-PLC/CONTROLLINO_Library
• Irrigation example
  https://github.com/genestealer/Controllino-Irrigation

⭐ Real User Example  : https://maker.wiznet.io/Hannah/projects/controllino%2Dirrigation/

etc... : CONTROLLINO Training Kit